steel (steel pipe) theoretical weight formula

2021-11-12
Various steels theoretical weight calculation formula (full version)

 
Angle steel: weight per meter = 0.00785 * (edge ​​width + width - edge thickness) * edge thickness
Round bar: Weight per meter = 0.00617 * diameter * diameter (same as rebar and round bar)
Flat steel: weight per meter = 0.00785 * thickness * width
Steel pipe: Weight per meter = 0.0246615 * Wall thickness * (Outer diameter - wall thickness)
Steel Plate: Weight per meter = 7.85* Thickness
Brass tube: weight per meter = 0.02670 * wall thickness * (outer diameter - wall thickness)
Copper tube: weight per meter = 0.02796 * wall thickness * (outer diameter - wall thickness)
Aluminum tread plate: weight per square meter = 2.96* thickness
Non-ferrous metals specific gravity: copper plate 8.9 brass plate 8.5 zinc plate 7.2 lead plate 11.37
The formula for non-ferrous metal sheet is: weight per square meter = specific gravity * thickness



Material w/kg.mu-1 Note
Flat steel,steel plate,steel strip W=0.00785×width×thickness 1. The exact calculation formula for angle steel, I-beam and channel steel is very complicated, and the list formula is used to calculate the approximate value.

2. The f-factor: general model and 3.34 with a, 2.65 with b, and 2.26 with c.

3. The coefficient of e: general model and 3.26 with a, 244 with b, and 2.24 with c.

4, each length unit is mm.
Square steel W=0.00785×side length×side length
Round steel, wire rod, steel wire W = 0.00617 × diameter × diameter
Hexagonal steel W = 0.0068 × distance to the opposite side × distance to the edge
Octagonal steel W=0.0065×opposite edge×distance from edge
Steel pipe W = 0.02466 × wall thickness (outer wall - wall thickness)
Equal angle steel W=0.00785×edge thickness (2 sides width - edge thickness)
Unequal angle steel W = 0.00785 × edge thickness (long side width + moment width - side thickness
I-beam W = 0.00785 × waist thickness [high + f (leg width - waist thickness)]
Channel steel W = 0.00785 × waist thickness [H + e (leg width - waist thickness)]




Stainless steel theoretical weight calculation:
 
Stainless steel weight:
● Chrome stainless steel takes 7.75 tons/M3
● Chrome-nickel stainless steel takes 7.93 tons/M3
● iron take 7.87 tons / M3
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Theoretical weight calculation formula for stainless steel
Theoretical weight of steel Weight (kg) = Thickness (mm) × Width (mm) × Length (mm) × Density
Density steel
7.93 201,202,301,302,304,304L,305,321
7.75 405,410,420
7.98 309S, 310S, 316S, 316L, 347
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Stainless steel rod, wire, theoretical formula
★ diameter × diameter × 0.00609 = kg / m (for 410 420 420j2 430 431)
For example: ¢50 50×50×0.00609=15.23 Kg/m
★ diameter × diameter × 0.00623 = kg/m (for 301 303 304 316 316L 321)
For example: ¢50 50×50×0.00623=15.575 Kg/meter
 
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Stainless steel profile, theoretical calculation formula
◆ Hexagonal bar opposite side × opposite side × 0.0069 = Kg/meter
◆ Square bar side width × side width × 0.00793 = Kg / meter
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Stainless steel tube, theoretical calculation formula
(OD - wall thickness) × wall thickness × 0.02491 = Kg/meter
For example, ¢57×3.5 (57-3.5)×3.5×0.02491=4.66 Kg/meter
 
 
 
Various formulae for calculating the weight of various steel pipes (materials)
 
Weight of steel pipe = 0.25 × π × (diameter outside diameter - inside diameter squared) × L × steel specific gravity where: π = 3.14 L = length of steel pipe Steel weight 7.8 so, therefore, the weight of steel = 0.25 × 3.14 × (diameter outside diameter - inside diameter Square) × L × 7.8 * If the size unit is in meters (M), the calculated weight result is kg (Kg)
 
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The density of steel is: 7.85g/cm3
Steel theoretical weight calculation
The theoretical weight of steel is calculated in kilograms (kg). The basic formula is:
W (weight, kg) = F (cross-sectional area mm2) × L (length, m) × ρ (density, g/cm3) × 1/1000
 
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The formula for calculating the theoretical weight of various steels is as follows:
 
Round steel rod (kg/m)
W= 0.006165 ×d×d
d = diameter mm
100 mm diameter round steel, for every m weight. Weight per m = 0.006165 × 1002 = 61.65kg
 
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Screw thread steel (kg/m)
W= 0.00617 ×d×d
d= section diameter mm
Rebar 12 mm in diameter, for every m of weight. Weight per m = 0.00617 × 12 2 = 0.89 kg
 
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Square steel (kg/m)
W= 0.00785 ×a ×a
a= width mm
Square steel with a width of 20 mm, for every m of weight. Weight per m = 0.00785 × 202 = 3.14kg
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Flat steel (kg/m)
W= 0.00785 ×b ×d
b= side width mm
d= Thickness mm
Flat steel with a width of 40 mm and a thickness of 5 mm, for every m of weight. Weight per m = 0.00785 × 40 × 5 = 1.57kg
 
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Hexagonal steel (kg/m)
W= 0.006798 × s × s
s= distance to the side mm
Hexagonal steel with an edge distance of 50 mm is calculated for every m of weight. Weight per m = 0.006798 × 502 = 17kg
 
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Octagonal Steel (kg/m)
W= 0.0065 ×s ×s
s= distance to the side mm
For octagonal steel with an edge distance of 80 mm, calculate the weight per m. Weight per m = 0.0065 × 802 = 41.62kg
 
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Equal angle steel (kg/m)
W=0.00785 ×[d (2b – d )+0.215 (R2 – 2r 2 )]
b= side width
d= edge thickness
R= radius of inner arc
r= end arc radius
Find the weight per m of 20 mm × 4 mm equal angle steel. From the metallurgical catalogue, find out that R is 3.5 for a 4mm × 20mm equilateral angle steel and r is 1.2, then every m weight = 0.00785 × [4 × (2 × 20 - 4 ) + 0.215 × (3.52 - 2 × 1.2 2 )]=1.15kg
 
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Unequal angle steel (kg/m)
W=0.00785 ×[d (B+b – d )+0.215 (R2 – 2 r 2 )]
B= long side width
b= short side width
d= edge thickness
R= radius of inner arc
r= end arc radius
Find the weight per m of a 30 mm × 20 mm × 4 mm unequal angle steel. From the metallurgical product catalog, find out that R is 3.5 for an unequal angle steel of 30 × 20 × 4 and r is 1.2, then every m weight = 0.00785 × [4 × (30 + 20 - 4) + 0.215 × (3.52 - 2 × × 1.2 2 )]=1.46kg
 
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Channel steel (kg/m)
W=0.00785 ×[hd+2t (b – d )+0.349 (R2 – r 2 )]
h= high
b= leg length
d= waist thickness
t= average leg thickness
R= radius of inner arc
r= end arc radius
Calculate the weight per meter of 80 mm × 43 mm × 5 mm channel steel. Find out from the metallurgical product catalog that the channel t is 8, R is 8, and r is 4, then every m weight = 0.00785 × [80 × 5 + 2 × 8 × (43 - 5 ) + 0.349 × (82–4 2)]=8.04kg
 
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I-beam (kg/m)
W= 0.00785 ×[hd+2t (b – d )+0.615 (R2 – r 2 )]
h= high
b= leg length
d= waist thickness
t= average leg thickness
R= radius of inner arc
r= end arc radius
Calculate the weight per inch of 250 mm × 118 mm × 10 mm I-beam. From the manual of metal materials, find out that the I-steel t is 13, R is 10, and r is 5, then the weight per m = 0.00785 × [250 × 10 + 2 × 13 × (118 -10) + 0.615 × (102 - 5 2 )]=42.03kg
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Steel plate (kg/m2)
W= 7.85 ×d
d= Thick
Thickness 4mm steel plate, for every m2 weight. Weight per m2 = 7.85 × 4 = 31.4kg
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Steel pipe (kg/m) (round pipe), including seamless steel pipe and welded steel pipe
W= 0.0246615 ×S (D – S )
D= outside diameter
S= wall thickness
Seamless steel pipe with an outer diameter of 60 mm and a wall thickness of 4 mm, for every m of weight. Weight per m = 0.02466 × 4 × (60 - 4 ) = 5.52kg
 
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Square moment tube calculation formula: (square and rectangular (rectangular) section carbon steel pipe calculation formula)
Weight per meter: kg/m Formula: kg/m = (Oc - 4Wt) * Wt * 0.00785
Where: Oc is the outer perimeter, Wt is the wall thickness; square Oc=4*a rectangle Oc=2a+2b a, b is the side length

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