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A989 K90901

America ASTM A989K90901 高温设备用热等压合金钢法兰、配件、阀门和零件的标准规范 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A989K90901 / A989 K90901
Category Grade Standard Region/Area Standard Content
Metals A989 K90901 ASTM A989/A989M America 高温设备用热等压合金钢法兰、配件、阀门和零件的标准规范

Chemical composition(mass fraction)(wt.%) of the A989 K90901

Element Min Max Similar
C 0.0800 0.1200 -
Mn 0.3000 0.6000 -
P - 0.0200 -
S - 0.0150 -
Si 0.2000 0.5000 -
Ni - 0.4000 -
Cr 8.0000 9.5000 -
Mo 0.8500 1.0500 -
V 0.1800 0.2500 -
N 0.0300 0.0700 -
Al - 0.0400 -
Nb 0.0600 0.1000 -

Mechanical Properties of steel grade A989 K90901

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)
718 (≥) 332 (≥) 41 33 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 421

Physical Properties of steel grade A989 K90901

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
43 - -     0.31 -  
418 448 - 22.3 122   -  
959 - 23 12.2   214 441

Heat Treatment of steel grade A989 K90901

Heat treated : 1173°C - 1654°C

Technological Curves of steel grade A989 K90901

Cross Reference Table (Equivalent Grade) of A989 K90901

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