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America UNS K20900 合金钢焊条 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: K20900 / K20900
Category Grade Standard Region/Area Standard Content
Metals K20900 -- America 合金钢焊条

Chemical composition(mass fraction)(wt.%) of the K20900

Element Min Max Similar
Total others - - -
Si 0.4000 0.7000 -
S - 0.0250 -
P - 0.0250 -
Ni - 0.2000 -
Mo 0.4000 0.6500 -
Mn 0.4000 0.7000 -
Cu - 0.3500 -
Cr 1.2000 1.5000 -
C 0.0700 0.1200 -

Mechanical Properties of steel grade K20900

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)
822 (≥) 834 (≥) 31 23 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical Properties of steel grade K20900

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 - -     0.42 -  
963 998 - 12.3 324   -  
262 - 42 42.2   131 132

Heat Treatment of steel grade K20900

Heat treated : 1888°C - 1944°C

Technological Curves of steel grade K20900

Cross Reference Table (Equivalent Grade) of K20900

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