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America UNS G51204 Free cutting steel and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: G51204 / G51204
Category Grade Standard Region/Area Standard Content
Metals G51204 -- America Free cutting steel

Chemical composition(mass fraction)(wt.%) of the G51204

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0400 -
Pb 0.1500 0.3500 -
P - 0.0300 -
Ni - 0.2500 -
Mo - 0.0600 -
Mn 0.7000 0.9000 -
Cu - 0.3500 -
Cr 0.7000 0.9000 -
C 0.1700 0.2200 -

Mechanical Properties of steel grade G51204

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)
431 (≥) 316 (≥) 23 33 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 212

Physical Properties of steel grade G51204

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
34 - -     0.21 -  
348 113 - 23.3 234   -  
432 - 41 31.2   214 131

Heat Treatment of steel grade G51204

Heat treated : 1618°C - 1772°C

Technological Curves of steel grade G51204

Cross Reference Table (Equivalent Grade) of G51204

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