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China NB F304 压水堆核电厂阀门 第5部分:奥氏体不锈钢锻件技术条件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: F304 / F304
Category Grade Standard Region/Area Standard Content
Metals F304 NB/T 20010.5 China 压水堆核电厂阀门 第5部分:奥氏体不锈钢锻件技术条件

Chemical composition(mass fraction)(wt.%) of the F304

Element Min Max Similar
Cr 18.0000 20.0000 -
Ni 8.0000 11.0000 -
S - 0.0300 -
P - 0.0450 -
Mn - 2.0000 -
Si - 1.0000 -
C - 0.0800 -

Mechanical Properties of steel grade F304

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)
318 (≥) 444 (≥) 33 13 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 142

Physical Properties of steel grade F304

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
31 - -     0.24 -  
935 716 - 14.3 223   -  
558 - 22 44.2   212 344

Heat Treatment of steel grade F304

Heat treated : 1854°C - 1133°C

Technological Curves of steel grade F304

Cross Reference Table (Equivalent Grade) of F304

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