30CrMnSi steel
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- 30CrMnSi steel
30CrMnSi steel 30CrMnSi is a grade of alloy structural steel stipulated by Chinese national standards. Unified digital code: A24302. Main features 30CrMnSi steel is a high-strength quenched and tempered structural steel. It has high strengt
30CrMnSi steel
30CrMnSi steel
30CrMnSi is a grade of alloy structural steel stipulated by Chinese national standards. Unified digital code: A24302.
Main features
30CrMnSi steel is a high-strength quenched and tempered structural steel. It has high strength and toughness, high hardenability, medium cold deformation plasticity, and good cutting performance. There is a tendency to temper brittleness, and the transverse impact toughness is poor. The welding performance is good, but when the thickness is greater than 3mm, it should be preheated to 150℃ first, and heat treatment is required after welding. Generally used after tempering.
Heat treatment
Quenching heating temperature (℃): 880; coolant: oil
Tempering heating temperature (℃): 520; Coolant: water, oil
Chemical composition
| Grade |
Chemical composition(%)
|
|||
| C | Si | Mn | Cr | |
| 30CrMnSi | 0.27～0.34 | 0.90～1.20 | 0.80～1.10 | 0.80～1.10 |
Mechanical properties
| Grade | Mechanical properties | |||||
| Tensile strength MPa | Yield point MPa | Elongation % | Reduction of area % | Impact absorption work J | Brinell hardness | |
| 30CrMnSi | ≥1100 | ≥800 | ≥10 | ≥45 | ≥50 | ≤229 |
Application
30CrMnSi steel is mostly used to manufacture various important parts with high load and high speed, such as gears, shafts, clutches, sprockets, grinding wheel shafts, bushings, bolts, nuts, etc. It is also used to manufacture parts with wear resistance and low working temperature. Variable load welding components, such as high-pressure blower blades, valve plates, and non-corrosive pipes.
Product key description, this is a very good product description, detailing our product use, product characteristics
