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America ASTM A74 铸铁污水管及配件的技术规范 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A74 / A74
Category Grade Standard Region/Area Standard Content
Metals A74 ASTM A74 America 铸铁污水管及配件的技术规范

Chemical composition(mass fraction)(wt.%) of the A74

Element Min Max Similar
Ti - 0.1000 -
S - 0.1500 -
Pb - 0.0150 -
P - 0.3800 -
Cr - 0.5000 -
CEV 4.1000 - -
Al - 0.5000 -

Mechanical Properties of steel grade A74

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)
654 (≥) 814 (≥) 31 11 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 223

Physical Properties of steel grade A74

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
42 - -     0.24 -  
784 259 - 24.3 112   -  
468 - 13 22.2   332 314

Heat Treatment of steel grade A74

Heat treated : 1457°C - 1723°C

Technological Curves of steel grade A74

Cross Reference Table (Equivalent Grade) of A74

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