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A709 Gr.50

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China 首钢Q/SG A709Gr.50 美标热轧钢板和钢带 第3部分： 桥梁用结构钢板 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A709Gr.50 / A709 Gr.50
Category Grade Standard Region/Area Standard Content
Metals A709 Gr.50 Q/SGZGS 0335.3 China 美标热轧钢板和钢带 第3部分： 桥梁用结构钢板

Chemical composition(mass fraction)(wt.%) of the A709 Gr.50

Element Min Max Similar
C - 0.2300 -
Mn - 1.3500 -
P - 0.0400 -
S - 0.0500 -
Si - 0.4000 -
Si 0.1500 0.4000 -

Mechanical Properties of steel grade A709 Gr.50

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
638 (≥) 298 (≥) 21 24 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical Properties of steel grade A709 Gr.50

Temperature
(°C)		 Modulus of elasticity
(GPa)		 Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)		 Specific thermal capacity
(J/kg·°C)		 Specific electrical resistivity
(Ω mm²/m)		 Density
(kg/dm³)		 Poisson’s coefficient, ν
32 - -     0.34 -  
436 213 - 33.3 441   -  
281 - 31 32.2   234 233

Heat Treatment of steel grade A709 Gr.50

Heat treated : 1679°C - 1742°C

Technological Curves of steel grade A709 Gr.50

Cross Reference Table (Equivalent Grade) of A709 Gr.50

Grade Standard Country Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1
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