ASTM A519 Seamless Carbon and Alloy Steel Mechanical Tubing
ASTM A519 Standard
Specification for Seamless Carbon and Alloy Steel Mechanical Tubing
1. Scope
1.1 This specification covers several grades of carbon and alloy steel seamless mechanical tubing. The grades are listed in Tables 1-3. When welding is used for joining the weldable mechanical tube grades, the welding procedure shall be suitable for the grade, the condition of the components, and the intended service.
1.2 This specification covers both seamless hot-finished mechanical tubing and seamless cold-finished mechanical tubing in sizes up to and including 12 3 ⁄ 4 in. (323.8 mm) outside diameter for round tubes with wall thicknesses as required.
1.3 The tubes shall be furnished in the following shapes, as specified by the purchaser: round, square, rectangular, and special sections.
1.4 Supplementary requirements of an optional nature are provided and when desired shall be so stated in the order.
1.5 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
2. Referenced Documents
2.1 ASTM Standards:
A 370 Test Methods and Definitions for Mechanical Testing of Steel Products
A 1040 Guide for Specifying Harmonized Standard Grade Compositions for Wrought Carbon, Low-Alloy, and Alloy Steels
E 59 Practice for Sampling Steel and Iron for Determination of Chemical Composition
2.2 Military Standards:
MIL-STD-129 Marking for Shipment and Storage
MIL-STD-163 Steel Mill Products Preparation for Shipment and Storage
2.3 Federal Standard:
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
3. Ordering Information
3.1 Orders for material under this specification should include the following, as required, to describe the desired material adequately:
3.1.1 Quantity (feet, weight, or number of pieces),
3.1.2 Name of material (seamless carbon or alloy steel mechanical tubing),
3.1.3 Form (round, square, rectangular or special shapes,Section 1),
3.1.4 Dimensions (round, outside diameters and wall thickness, Section 8; square and rectangular, outside dimensions and wall thickness, Section 9; other, specify),
3.1.5 Length (specific or random, mill lengths, see 8.5 and 9.5),
3.1.6 Manufacture (hot finished or cold finished, 4.5 and 4.6),
3.1.7 Grade (Section 5),
3.1.8 Condition (sizing method and thermal treatment, Section 12),
3.1.9 Surface finish (special pickling, shot blasting, or ground outside surface, if required),
3.1.10 Specification designation,
3.1.11 Individual supplementary requirements, if required,
3.1.12 End use, if known,
3.1.13 Packaging,
3.1.14 Product analysis and chemical analysis, if required(Section 6 and Section 7),
3.1.15 Specific requirements, or exceptions to this specification,
3.1.16 Special marking (Section 15), and
3.1.17 Special packing (Section 16).
4. Materials and Manufacture
4.1 The steel may be made by any process.
4.2 If a specific type of melting is required by the purchaser,it shall be as stated on the purchase order.
4.3 The primary melting may incorporate separate degassing or refining, and may be followed by secondary melting,such as electroslag or vacuum-arc remelting. If secondary melting is employed, the heat shall be defined as all of the ingots remelted from a single primary heat.
4.4 Steel may be cast in ingots or may be strand cast. When steel of different grades is sequentially strand cast, identification of the resultant transition material is required. The producer shall remove the transition material by an established procedure that positively separates the grades.
4.5 Tubes shall be made by a seamless process and shall be either hot finished or cold finished, as specified.
4.6 Seamless tubing is a tubular product made without a welded seam. It is manufactured usually by hot working steel and, if necessary, by subsequently cold finishing the hot-worked tubular product to produce the desired shape, dimensions and properties.
5. Chemical Composition
5.1 The steel shall conform to the requirements as to chemical composition prescribed in Table 1 (Low Carbon MT Grades), Table 2 (Higher Carbon Steels), Table 3 (Alloy Standard Steels (see Guide A 1040)) and Table 4 (Resulfurized or Rephosphorized, or Both, Carbon Steels (see Guide A 1040)).
A The ranges and limits given in this table apply to heat analysis; except as required by 6.1, product analyses are subject to the applicable additional tolerances given in Table Number 5.
TABLE 1 Chemical Requirements of Low-Carbon Steels
|
Grade
Designation
|
Chemical Composition Limits, % | |||
| Carbon A | Manganese B |
Phosphorus, B max
|
Sulfur, B max
|
|
| MT 1010 | 0.05–0.15 | 0.30–0.60 | 0.040 | 0.050 |
| MT 1015 | 0.10–0.20 | 0.30–0.60 | 0.040 | 0.050 |
| MT X 1015 | 0.10–0.20 | 0.60–0.90 | 0.040 | 0.050 |
| MT 1020 | 0.15–0.25 | 0.30–0.60 | 0.040 | 0.050 |
| MT X 1020 | 0.15–0.25 | 0.70–1.00 | 0.040 | 0.050 |
A Limits apply to heat and product analyses.
B Limits apply to heat analysis; except as required by 6.1, product analyses are subject to the applicable additional tolerances given in Table 5.
TABLE 2 Chemical Requirements of Other Carbon Steels
|
Grade
Designation
|
Chemical Composition Limits, % A | |||
| Carbon | Manganese |
Phosphorus,max
|
Sulfur,max
|
|
| 1008 | 0.10 max | 0.30–0.50 | 0.040 | 0.050 |
| 1010 | 0.08–0.13 | 0.30–0.60 | 0.040 | 0.050 |
| 1012 | 0.10–0.15 | 0.30–0.60 | 0.040 | 0.050 |
| 1015 | 0.13–0.18 | 0.30–0.60 | 0.040 | 0.050 |
| 1016 | 0.13–0.18 | 0.60–0.90 | 0.040 | 0.050 |
| 1017 | 0.15–0.20 | 0.30–0.60 | 0.040 | 0.050 |
| 1018 | 0.15–0.20 | 0.60–0.90 | 0.040 | 0.050 |
| 1019 | 0.15–0.20 | 0.70–1.00 | 0.040 | 0.050 |
| 1020 | 0.18–0.23 | 0.30–0.60 | 0.040 | 0.050 |
| 1021 | 0.18–0.23 | 0.60–0.90 | 0.040 | 0.050 |
| 1022 | 0.18–0.23 | 0.70–1.00 | 0.040 | 0.050 |
| 1025 | 0.22–0.28 | 0.30–0.60 | 0.040 | 0.050 |
| 1026 | 0.22–0.28 | 0.60–0.90 | 0.040 | 0.050 |
| 1030 | 0.28–0.34 | 0.60–0.90 | 0.040 | 0.050 |
| 1035 | 0.32–0.38 | 0.60–0.90 | 0.040 | 0.050 |
| 1040 | 0.37–0.44 | 0.60–0.90 | 0.040 | 0.050 |
| 1045 | 0.43–0.50 | 0.60–0.90 | 0.040 | 0.050 |
| 1050 | 0.48–0.55 | 0.60–0.90 | 0.040 | 0.050 |
| 1518 | 0.15–0.21 | 1.10–1.40 | 0.040 | 0.050 |
| 1524 | 0.19–0.25 | 1.35–1.65 | 0.040 | 0.050 |
| 1541 | 0.36–0.44 | 1.35–1.65 | 0.040 | 0.050 |
A The ranges and limits given in this table apply to heat analysis; except as required by 6.1, product analyses are subject to the applicable additional tolerances given in Table Number 5.
TABLE 3 Chemical Requirements for Alloy Steels
N OTE 1—The ranges and limits in this table apply to steel not exceeding 200 in. 2 (1290 cm 2 ) in cross-sectional area.
N OTE 2—Small quantities of certain elements are present in alloy steels which are not specified or required. These elements are considered as incidental and may be present to the following maximum amounts: copper, 0.35 %; nickel, 0.25 %; chromium, 0.20 %; molybdenum, 0.10 %.
N OTE 3—The ranges and limits given in this table apply to heat analysis; except as required by 6.1, product analyses are subject to the applicable additional tolerances given in Table Number 5.
|
Grade
Designation
|
Chemical Composition Limits, % | |||||||
| Carbon | Manganese |
Phosphorus, C max
|
Sulfur, C,D max
|
Silicon | Nickel | Chromium |
Molybdenum
|
|
| 1330 | 0.28–0.33 | 1.60–1.90 | 0.040 | 0.040 | 0.15–0.35 | ... | ||
| 1335 | 0.33–0.38 | 1.60–1.90 | 0.040 | 0.040 | 0.15–0.35 | ... | ||
| 1340 | 0.38–0.43 | 1.60–1.90 | 0.040 | 0.040 | 0.15–0.35 | ... | ||
| 1345 | 0.43–0.48 | 1.60–1.90 | 0.040 | 0.040 | 0.15–0.35 | ... | ||
| 3140 | 0.38–0.43 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | 1.10–1.40 | 0.55–0.75 | |
| E3310 | 0.08–0.13 | 0.45–0.60 | 0.025 | 0.025 | 0.15–0.35 | 3.25–3.75 | 1.40–1.75 | |
| 4012 | 0.09–0.14 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | ... | 0.15–0.25 | |
| 4023 | 0.20–0.25 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | ... | 0.20–0.30 | |
| 4024 | 0.20–0.25 | 0.70–0.90 | 0.040 | 0.035−0.050 | 0.15–0.35 | ... | 0.20–0.30 | |
| 4027 | 0.25–0.30 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | ... | 0.20–0.30 | |
| 4028 | 0.25–0.30 | 0.70–0.90 | 0.040 | 0.035−0.050 | 0.15–0.35 | ... | 0.20–0.30 | |
| 4037 | 0.35–0.40 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | ... | 0.20–0.30 | |
| 4042 | 0.40–0.45 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | ... | 0.20–0.30 | |
| 4047 | 0.45–0.50 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | ... | 0.20–0.30 | |
| 4063 | 0.60–0.67 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | ... | 0.20–0.30 | |
| 4118 | 0.18–0.23 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | ... | 0.40–0.60 | 0.08–0.15 |
| 4130 | 0.28–0.33 | 0.40–0.60 | 0.040 | 0.040 | 0.15–0.35 | ... | 0.80–1.10 | 0.15–0.25 |
| 4135 | 0.32–0.39 | 0.65–0.95 | 0.040 | 0.040 | 0.15–0.35 | ... | 0.80–1.10 | 0.15–0.25 |
| 4137 | 0.35–0.40 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | ... | 0.80–1.10 | 0.15–0.25 |
| 4140 | 0.38–0.43 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | ... | 0.80–1.10 | 0.15–0.25 |
| 4142 | 0.40–0.45 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | ... | 0.80–1.10 | 0.15–0.25 |
| 4145 | 0.43–0.48 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | ... | 0.80–1.10 | 0.15–0.25 |
| 4147 | 0.45–0.50 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | ... | 0.80–1.10 | 0.15–0.25 |
| 4150 | 0.48–0.53 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | ... | 0.80–1.10 | 0.15–0.25 |
| 4320 | 0.17–0.22 | 0.45–0.65 | 0.040 | 0.040 | 0.15–0.35 | 1.65–2.00 | 0.40–0.60 | 0.20–0.30 |
| 4337 | 0.35–0.40 | 0.60–0.80 | 0.040 | 0.040 | 0.15–0.35 | 1.65–2.00 | 0.70–0.90 | 0.20–0.30 |
| E4337 | 0.35–0.40 | 0.65–0.85 | 0.025 | 0.025 | 0.15–0.35 | 1.65–2.00 | 0.70–0.90 | 0.20–0.30 |
| 4340 | 0.38–0.43 | 0.60–0.80 | 0.040 | 0.040 | 0.15–0.35 | 1.65–2.00 | 0.70–0.90 | 0.20–0.30 |
| E4340 | 0.38–0.43 | 0.65–0.85 | 0.025 | 0.025 | 0.15–0.35 | 1.65–2.00 | 0.70–0.90 | 0.20–0.30 |
| 4422 | 0.20–0.25 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | 0.35–0.45 | ||
| 4427 | 0.24–0.29 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | 0.35–0.45 | ||
| 4520 | 0.18–0.23 | 0.45–0.65 | 0.040 | 0.040 | 0.15–0.35 | 0.45–0.60 | ||
| 4615 | 0.13–0.18 | 0.45–0.65 | 0.040 | 0.040 | 0.15–0.35 | 1.65–2.00 | 0.20–0.30 | |
| 4617 | 0.15–0.20 | 0.45–0.65 | 0.040 | 0.040 | 0.15–0.35 | 1.65–2.00 | 0.20–0.30 | |
| 4620 | 0.17–0.22 | 0.45–0.65 | 0.040 | 0.040 | 0.15–0.35 | 1.65–2.00 | 0.20–0.30 | |
| 4621 | 0.18–0.23 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | 1.65–2.00 | 0.20–0.30 | |
| 4718 | 0.16–0.21 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | 0.90–1.20 | 0.35–0.55 | 0.30–0.40 |
| 4720 | 0.17–0.22 | 0.50–0.70 | 0.040 | 0.040 | 0.15–0.35 | 0.90–1.20 | 0.35–0.55 | 0.15–0.25 |
| 4815 | 0.13–0.18 | 0.40–0.60 | 0.040 | 0.040 | 0.15–0.35 | 3.25–3.75 | 0.20–0.30 | |
| 4817 | 0.15–0.20 | 0.40–0.60 | 0.040 | 0.040 | 0.15–0.35 | 3.25–3.75 | 0.20–0.30 | |
| 4820 | 0.18–0.23 | 0.50–0.70 | 0.040 | 0.040 | 0.15–0.35 | 3.25–3.75 | 0.20–0.30 | |
| 5015 | 0.12–0.17 | 0.30–0.50 | 0.040 | 0.040 | 0.15–0.35 | 0.35–0.55 | ||
| 5046 | 0.43–0.50 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | 0.20–0.35 | ||
| 5115 | 0.13–0.18 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | 0.70–0.90 | ||
| 5120 | 0.17–0.22 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | 0.70–0.90 | ||
| 5130 | 0.28–0.33 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | 0.80–1.10 | ||
| 5132 | 0.30–0.35 | 0.60–0.80 | 0.040 | 0.040 | 0.15–0.35 | 0.75–1.00 | ||
| 5135 | 0.33–0.38 | 0.60–0.80 | 0.040 | 0.040 | 0.15–0.35 | 0.80–1.05 | ||
| 5140 | 0.38–0.43 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | 0.70–0.90 | ||
| 5145 | 0.43–0.48 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | 0.70–0.90 | ||
| 5147 | 0.46–0.51 | 0.70–0.95 | 0.040 | 0.040 | 0.15–0.35 | 0.85–1.15 | ||
| 5150 | 0.48–0.53 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | 0.70–0.90 | ||
| 5155 | 0.51–0.59 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | 0.70–0.90 | ||
| 5160 | 0.56–0.64 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | 0.70–0.90 | ||
| 52100 E | 0.93–1.05 | 0.25–0.45 | 0.025 | 0.015 | 0.15–0.35 | 0.25 max | 1.35–1.60 | 0.10 max |
| E50100 | 0.98–1.10 | 0.25–0.45 | 0.025 | 0.025 | 0.15–0.35 | 0.40–0.60 | ||
| E51100 | 0.98–1.10 | 0.25–0.45 | 0.025 | 0.025 | 0.15–0.35 | 0.90–1.15 | ||
| E52100 | 0.98–1.10 | 0.25–0.45 | 0.025 | 0.025 | 0.15–0.35 | 1.30–1.60 | ||
| 6118 | 0.16–0.21 | 0.50–0.70 | 0.040 | 0.040 | 0.15–0.35 | 0.50–0.70 | 0.10–0.15 | |
| 6120 | 0.17–0.22 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | 0.70–0.90 | 0.10 min | |
| 6150 | 0.48–0.53 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | 0.80–1.10 | 0.15 min | |
| E7140 | 0.38–0.43 | 0.50–0.70 | 0.025 | 0.025 | 0.15–0.40 | 1.40–1.80 | 0.30–0.40 | |
| 8115 | 0.13–0.18 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | 0.20–0.40 | 0.30–0.50 | 0.08–0.15 |
| 8615 | 0.13–0.18 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | 0.40–0.70 | 0.40–0.60 | 0.15–0.25 |
| 8617 | 0.15–0.20 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | 0.40–0.70 | 0.40–0.60 | 0.15–0.25 |
| 8620 | 0.18–0.23 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | 0.40–0.70 | 0.40–0.60 | 0.15–0.25 |
| 8622 | 0.20–0.25 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | 0.40–0.70 | 0.40–0.60 | 0.15–0.25 |
| 8625 | 0.23–0.28 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | 0.40–0.70 | 0.40–0.60 | 0.15–0.25 |
| 8627 | 0.25–0.30 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | 0.40–0.70 | 0.40–0.60 | 0.15–0.25 |
| 8630 | 0.28–0.33 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | 0.40–0.70 | 0.40–0.60 | 0.15–0.25 |
| 8637 | 0.35–0.40 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | 0.40–0.70 | 0.40–0.60 | 0.15–0.25 |
| 8640 | 0.38–0.43 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | 0.40–0.70 | 0.40–0.60 | 0.15–0.25 |
| 8642 | 0.40–0.45 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | 0.40–0.70 | 0.40–0.60 | 0.15–0.25 |
| 8645 | 0.43–0.48 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | 0.40–0.70 | 0.40–0.60 | 0.15–0.25 |
| 8650 | 0.48–0.53 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | 0.40–0.70 | 0.40–0.60 | 0.15–0.25 |
| 8655 | 0.51–0.59 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | 0.40–0.70 | 0.40–0.60 | 0.15–0.25 |
| 8660 | 0.55–0.65 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | 0.40–0.70 | 0.40–0.60 | 0.15–0.25 |
| 8720 | 0.18–0.23 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | 0.40–0.70 | 0.40–0.60 | 0.20–0.30 |
| 8735 | 0.33–0.38 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | 0.40–0.70 | 0.40–0.60 | 0.20–0.30 |
| 8740 | 0.38–0.43 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | 0.40–0.70 | 0.40–0.60 | 0.20–0.30 |
| 8742 | 0.40–0.45 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | 0.40–0.70 | 0.40–0.60 | 0.20–0.30 |
| 8822 | 0.20–0.25 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | 0.40–0.70 | 0.40–0.60 | 0.30–0.40 |
| 9255 | 0.51–0.59 | 0.60–0.80 | 0.040 | 0.040 | 1.80–2.20 | 0.60–0.80 | ||
| 9260 | 0.56–0.64 | 0.75–1.00 | 0.040 | 0.040 | 1.80–2.20 | |||
| 9262 | 0.55–0.65 | 0.75–1.00 | 0.040 | 0.040 | 1.80–2.20 | 0.25–0.40 | ||
| E9310 | 0.08–0.13 | 0.45–0.65 | 0.025 | 0.025 | 0.15–0.35 | 3.00–3.50 | 1.00–1.40 | 0.08–0.15 |
| 9840 | 0.38–0.42 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | 0.85–1.15 | 0.70–0.90 | 0.20–0.30 |
| 9850 | 0.48–0.53 | 0.70–0.90 | 0.040 | 0.040 | 0.15–0.35 | 0.85–1.15 | 0.70–0.90 | 0.20–0.30 |
| 50B40 | 0.38–0.42 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | 0.40–0.60 | ||
| 50B44 | 0.43–0.48 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | 0.40–0.60 | ||
| 50B46 | 0.43–0.50 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | 0.20–0.35 | ||
| 50B50 | 0.48–0.53 | 0.74–1.00 | 0.040 | 0.040 | 0.15–0.35 | 0.40–0.60 | ||
| 50B60 | 0.55–0.65 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | 0.40–0.60 | ||
| 51B60 | 0.56–0.64 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | 0.70–0.90 | ||
| 81B45 | 0.43–0.48 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | 0.20–0.40 | 0.35–0.55 | 0.08–0.15 |
| 86B45 | 0.43–0.48 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | 0.40–0.70 | 0.40–0.60 | 0.15–0.25 |
| 94B15 | 0.13–0.18 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | 0.30–0.60 | 0.30–0.50 | 0.08–0.15 |
| 94B17 | 0.15–0.20 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | 0.30–0.60 | 0.30–0.50 | 0.08–0.15 |
| 94B30 | 0.28–0.33 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | 0.30–0.60 | 0.30–0.50 | 0.08–0.15 |
| 94B40 | 0.38–0.43 | 0.75–1.00 | 0.040 | 0.040 | 0.15–0.35 | 0.30–0.60 | 0.30–0.50 | 0.08–0.15 |
A Grades shown in this table with prefix letter E generally are manufactured by the basic-electric-furnace process. All others are normally manufactured by the basic-open-hearth process but may be manufactured by the basic-electric-furnace process with adjustments in phosphorus and sulfur.
B Grades shown in this table with the letter B, such as 50B40, can be expected to have 0.0005 % minimum boron control.
C The phosphorus sulfur limitations for each process are as follows:
Basic electric furnace 0.025 max % Acid electric furnace 0.050 max %
Basic open hearth 0.040 max % Acid open hearth 0.050 max %
D Minimum and maximum sulfur content indicates resulfurized steels.
E The purchaser may specify the following maximum amounts: copper, 0.30 %; aluminum, 0.050 %; and oxygen, 0.0015 %.
TABLE 4 Chemical Requirements of Resulfurized or Rephosphorized, or Both, Carbon Steels A
|
Grade
Designation
|
Chemical Composition Limits, % | ||||
| Carbon | Manganese | Phosphorus | Sulfur | Lead | |
| 1118 | 0.14–0.20 | 1.30–1.60 | 0.040 max | 0.08–0.13 | |
| 11L18 | 0.14–0.20 | 1.30–1.60 | 0.040 max | 0.08–0.13 | 0.15–0.35 |
| 1132 | 0.27–0.32 | 1.35–1.65 | 0.040 max | 0.08–0.13 | |
| 1137 | 0.32–0.39 | 1.35–1.65 | 0.040 max | 0.08–0.13 | |
| 1141 | 0.37–0.45 | 1.35–1.65 | 0.040 max | 0.08–0.13 | |
| 1144 | 0.40–0.48 | 1.35–1.65 | 0.040 max | 0.24–0.33 | |
| 1213 | 0.13 max | 0.70–1.00 | 0.07–0.12 | 0.24–0.33 | |
| 12L14 | 0.15 max | 0.85–1.15 | 0.04–0.09 | 0.26–0.35 | 0.15–0.35 |
| 1215 | 0.09 max | 0.75–1.05 | 0.04–0.09 | 0.26–0.35 | |
A The ranges and limits given in this table apply to heat analysis; except as required by 6.1, product analyses are subject to the applicable additional tolerances given in Table Number 5.
5.2 Grade MT1015 or MTX1020 will be supplied at the producer’s option, when no grade is specified.
5.3 When a carbon steel grade is ordered under this specification, supplying an alloy grade that specifically requires the addition of any element other than those listed for the ordered grade in Table 1 and Table 2 is not permitted.
5.4 Analyses of steels other than those listed are available.To determine their availability, the purchaser should contact the producer.
6. Heat Analysis
6.1 An analysis of each heat of steel shall be made by the steel manufacturer to determine the percentages of the elements specified; if secondary melting processes are used, the heat analysis shall be obtained from one remelted ingot or the product of one remelted ingot of each primary melt. The heat analysis shall conform to the requirements specified, except that where the heat identity has not been maintained or where the analysis is not sufficiently complete to permit conformance to be determined, the chemical composition determined from a
product analysis made by the tubular manufacturer shall conform to the requirements specified for heat analysis. When requested in the order or contract, a report of such analyses shall be furnished to the purchaser.
7. Product Analysis
7.1 Except as required by 6.1, a product analysis by the manufacturer shall be required only when requested in the order.
7.1.1 Heat Identity Maintained—One product analysis per heat on either billet or tube.
7.1.2 Heat Identity Not Maintained—A product analysis from one tube per 2000 ft (610 m) or less for sizes over 3 in.(76.2 mm), and one tube per 5000 ft (1520 m) or less for sizes 3 in. (76.2 mm) and under.
7.2 Samples for chemical analysis, except for spectrochemical analysis, shall be taken in accordance with Practice E 59.The composition thus determined shall correspond to the requirements in the applicable section or Tables 1-5 of this
specification and shall be reported to the purchaser or the purchaser’s representative.
7.3 If the original test for check analysis fails, retests of two additional billets or tubes shall be made. Both retests for the elements in question shall meet the requirements of the specification; otherwise all remaining material in the heat or lot
shall be rejected or, at the option of the producer, each billet or tube may be individually tested for acceptance. Billets or tubes which do not meet the requirements of the specification shall be rejected.
TABLE 5 Product Analysis Tolerances Over or Under Specified Range or Limit
N OTE 1—Individual determinations may vary from the specified heat limits or ranges to the extent shown in this table except that any element in a heat may not vary both above and below a specified range.
N OTE 2—In all types of steel, because of the degree to which phosphorus and sulfur segregate, product analysis for these elements is not technologically appropriate for rephosphorized or resulfurized steels unless misapplication is clearly indicated.
| Carbon Steel Seamless Tubes | |||
| Element |
Limit, or Maximum of Specified Range, %
|
Tolerance, Over the Maximum Limit or Under the Minimum Limit, %
|
|
| Under min | Over max | ||
| Carbon | to 0.25, incl | 0.02 | 0.02 |
| over 0.25 to 0.55, incl | 0.03 | 0.03 | |
| over 0.55 | 0.04 | 0.04 | |
| Manganese | to 0.90, incl | 0.03 | 0.03 |
| over 0.90 to 1.65, incl | 0.06 | 0.06 | |
| Phosphorus | basic steel to 0.05, incl | . . . | 0.008 |
|
acid-bessemer steel to 0.12,incl
|
. . . | 0.010 | |
| Sulfur | to 0.06, incl | . . . | 0.008 |
| Silicon | to 0.35, incl | 0.02 | 0.02 |
| over 0.35 to 0.60, incl | 0.05 | 0.05 | |
| Copper | . . . | 0.02 | 0.02 |
| Alloy Steel Seamless Tube | |||
| Elements |
Limit, or Maximum of
Specified Element, %
|
Tolerance Over Maximum
Limit or Under Minimum Limit
for Size Ranges Shown, %
|
|
|
100 in. 2
(645 cm 2 )
or less
|
Over 100 to
200 in. 2
(645 to 1290
cm 2 ), incl
|
||
| Carbon | to 0.30, incl | 0.01 | 0.02 |
| over 0.30 to 0.75, incl | 0.02 | 0.03 | |
| over 0.75 | 0.03 | 0.04 | |
| Manganese | to 0.90, incl | 0.03 | 0.04 |
| over 0.90 to 2.10, incl | 0.04 | 0.05 | |
| Phosphorus | over max, only | 0.005 | 0.010 |
| Sulfur | to 0.060, incl | 0.005 | 0.010 |
| Silicon | to 0.35, incl | 0.02 | 0.02 |
| over 0.35 to 2.20, incl | 0.05 | 0.06 | |
| Nickel | to 1.00, incl | 0.03 | 0.03 |
| over 1.00 to 2.00, incl | 0.05 | 0.05 | |
| over 2.00 to 5.30, incl | 0.07 | 0.07 | |
| over 5.30 to 10.00, incl | 0.10 | 0.10 | |
| Chromium | to 0.90, incl | 0.03 | 0.04 |
| over 0.90 to 2.10, incl | 0.05 | 0.06 | |
| over 2.10 to 3.99, incl | 0.10 | 0.10 | |
| Molybdenum | to 0.20, incl | 0.01 | 0.01 |
| over 0.20 to 0.40, incl | 0.02 | 0.03 | |
| over 0.40 to 1.15, incl | 0.03 | 0.04 | |
| Vanadium | to 0.10, incl | 0.01 | 0.01 |
| over 0.10 to 0.25, incl | 0.02 | 0.02 | |
| over 0.25 to 0.50, inc | 0.03 | 0.03 | |
| min value specified, check | 0.01 | 0.01 | |
| under min limit | |||
| Tungsten | to 1.00, incl | 0.04 | 0.05 |
| over 1.00 to 4.00, incl | 0.08 | 0.09 | |
| Aluminum | up to 0.10, incl | 0.03 | . . . |
| over 0.10 to 0.20, incl | 0.04 | . . . | |
| over 0.20 to 0.30, incl | 0.05 | . . . | |
| over 0.30 to 0.80, incl | 0.07 | . . . | |
| over 0.80 to 1.80, incl | 0.10 | . . . | |
8. Permissible Variations in Dimensions of Round Tubing
8.1 Hot-Finished Mechanical Tubing—Hot-finished mechanical tubing is produced to outside diameter and wall thickness. Variations in outside diameter and wall thickness shall not exceed the tolerances shown in Table 6 and Table 7.Table 6 and Table 7 cover these tolerances and apply to the specified size.
TABLE 6 Outside Diameter Tolerances for Round Hot-Finished Tubing A,B,C
| Outside Diameter Size Range, in. (mm) | Outside Diameter Tolerance, in. (mm) | |
| Over | Under | |
| Up to 2.999 (76.17) | 0.020 (0.51) | 0.020 (0.51) |
| 3.000–4.499 (76.20–114.27) | 0.025 (0.64) | 0.025 (0.64) |
| 4.500–5.999 (114.30–152.37) | 0.031 (0.79) | 0.031 (0.79) |
| 6.000–7.499 (152.40–190.47) | 0.037 (0.94) | 0.037 (0.94) |
| 7.500–8.999 (190.50–228.57) | 0.045 (1.14) | 0.045 (1.14) |
| 9.000–10.750 (228.60–273.05) | 0.050 (1.27) | 0.050 (1.27) |
A Diameter tolerances are not applicable to normalized and tempered or quenched and tempered conditions.
B The common range of sizes of hot finished tubes is 1 1 ⁄ 2 in. (38.1 mm) to 10 3 ⁄ 4in. (273.0 mm) outside diameter with wall thickness at least 3 % or more of outside diameter, but not less than 0.095 in. (2.41 mm).
C Larger sizes are available; consult manufacturer for sizes and tolerances.
8.2 Cold-Worked Mechanical Tubing:
8.2.1 Variations in outside diameter, inside diameter and wall thickness shall not exceed the tolerances shown in Table8 and Table 9.
8.2.2 Cold-worked mechanical tubing is normally produced to outside diameter and wall thickness. If the inside diameter is a more important dimension, then cold-worked tubing should be specified to inside diameter and wall thickness or outside
diameter and inside diameter.
8.3 Rough-Turned Mechanical Tubing—Variation in outside diameter and wall thickness shall not exceed the tolerance in Table 10. Table 10 covers tolerances as applied to outside diameter and wall thickness and applies to the specified size.
8.4 Ground Mechanical Tubing—Variation in outside diameter shall not exceed the tolerances in Table 11. This product is normally produced from a cold-worked tube.
8.5 Lengths—Mechanical tubing is commonly furnished in mill lengths, 5 ft (1.5 m) and over. Definite cut lengths are furnished when specified by the purchaser. Length tolerances are shown in Table 12.
8.6 Straightness—The straightness tolerances for seamless round tubing shall not exceed the amounts shown in Table 13.
9. Permissible Variations in Dimensions of Square and Rectangular Tubing
9.1 Variations in outside dimensions and wall thickness shall not exceed the tolerances shown in Table 14 unless otherwise specified by the manufacturer and the purchaser. The wall thickness dimensions shall not apply at the corners.
9.2 Corner Radii—The corners of a square and a rectangular tube will be slightly rounded inside and rounded outside consistent with the wall thickness. The outside corner may be slightly flattened. The radii of corners for square and rectangular cold finished tubing shall be in accordance with Table 15.
9.3 Squareness Tolerance:
9.3.1 Permissible variations for squareness for the side of square and rectangular tubing shall be determined by the following equation:
±b= c * 0.006
where:
b = tolerance for out-of-square, in. (mm), and
c = largest external dimension across flats, in. (mm).
9.3.2 The squareness of sides is commonly determined by one of the following methods:
9.3.2.1 Asquare, with two adjustable contact points on each arm, is placed on two sides. A fixed feeler gage is then used to measure the maximum distance between the free contact point and the surface of the tubing.
9.3.2.2 A square, equipped with direct-reading vernier, may be used to determine the angular deviation which in turn may be related to distance, in inches.
9.4 Twist Tolerance:
9.4.1 Twist tolerance for square and rectangular tubing shall be in accordance with Table 16. The twist tolerance in square and rectangular tubing may be measured by holding one end of the square or rectangular tube on a surface plate with the bottom side parallel to the surface plate and noting the height at either corner of the opposite end of the same side above the surface plate.
9.4.2 Twist may also be measured by the use of a beveled protractor, equipped with a level, and noting the angular deviation on opposite ends or at any point throughout the length.
9.5 Lengths—Square and rectangular tubing is commonly furnished in mill lengths 5 ft (1.5 m) and over. Definite cut lengths are furnished when specified by the purchaser. Length tolerances are shown in Table 17.
9.6 Straightness—Straightness for square and rectangular tubing shall be 0.060 in. in any 3 ft (1.67 mm in 1 m).
10. Machining Allowances
10.1 For the method of calculating the tube size required to cleanup in machining to a particular finished part, see Appendix X1.
11. Workmanship, Finish, and Appearance
11.1 The tubing shall be free of laps, cracks, seams, and other defects as is consistent with good commercial practice.The surface finish will be compatible with the condition to which it is ordered.
12. Condition
12.1 The purchaser shall specify a sizing method and, if required, a thermal treatment.
12.1.1 Sizing Methods:
12.1.1.1 HF—Hot Finished,
12.1.1.2 CW—Cold Worked,
12.1.1.3 RT—Rough Turned,
12.1.1.4 G—Ground.
12.1.2 Thermal Treatments:
12.1.2.1 A—Annealed,
12.1.2.2 N—Normalized,
12.1.2.3 QT—Quenched and Tempered,
12.1.2.4 SR—Stress Relieved or Finish Anneal.
13. Coating
13.1 When specified, tubing shall be coated with a film of oil before shaping to retard rust. Should the order specify that tubing be shipped without rust retarding oil, the film of oils incidental to manufacture will remain on the surface. If the order specifies no oil, the purchaser assumes responsibility for rust in transit.
13.2 Unless otherwise specified, tubing may be coated with a rust retarding oil on the outside and inside surfaces, at the option of the manufacturer.
14. Rejection
14.1 Tubes that fail to meet the requirements of this specification shall be set aside and the manufacturer shall be notified.
15. Product and Package Marking
15.1 Civilian Procurement—Each box, bundle or lift, and,when individual pieces are shipped, each piece shall be identified by a tag or stencil with the manufacturer’s name or brand, specified size, grade, purchaser’s order number and this
specification number (ASTM A 519).
15.2 In addition to the requirements in 15.1 and 15.3, bar coding is acceptable as a supplemental identification method.The purchaser may specify in the order a specific bar coding system to be used.
15.3 Government Procurement—When specified in the contract or order, and for direct procurement by or direct shipment to the government, marking for shipment, in addition to requirements specified in the contract or order, shall be in accordance with MIL-STD-129 for Military agencies and in accordance with Fed. Std. No. 123 for civil agencies.
16. Packaging
16.1 Civilian Procurement—On tubing 0.065 in. (1.65 mm) and lighter, the manufacturer, at his option, will box, crate,carton, package in secured lifts, or bundle to ensure safe delivery. Tubing heavier than 0.065 in. will normally be shipped loose, bundled or in secured lifts. Special packaging requiring extra operations other than those normally used by a manufacturer must be specified in the order.
16.2 Government Procurement—When specified in the contract or order, and for direct procurement by or direct shipment to the government when Level A is specified, preservation,packaging, and packing shall be in accordance with the Level A requirements of MIL-STD-163.
17. Keywords
17.1 alloy steel tube; carbon steel tube; mechanical tubing;seamless steel tube; steel tube