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China GB GCCr-4 高纯金属铬 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: GCCr-4 / GCCr-4
Category Grade Standard Region/Area Standard Content
Metals GCCr-4 GB/T 28908 China 高纯金属铬

Chemical composition(mass fraction)(wt.%) of the GCCr-4

Element Min Max Similar
Zn - 0.0005 -
Sn - 0.0020 -
Si - 0.1000 -
Sb - 0.0005 -
S - 0.0060 -
Pb - 0.0005 -
P - 0.0050 -
O - 0.1000 -
Ni - 0.0050 -
N - 0.0070 -
Mn - 0.0010 -
Fe - 0.1500 -
Cu - 0.0010 -
Cr 99.5000 - -
C - 0.0450 -
Bi - 0.0001 -
As - 0.0010 -
Al - 0.1000 -

Mechanical Properties of steel grade GCCr-4

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)
494 (≥) 112 (≥) 44 23 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 112

Physical Properties of steel grade GCCr-4

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
33 - -     0.24 -  
426 117 - 43.3 323   -  
473 - 43 32.2   422 313

Heat Treatment of steel grade GCCr-4

Heat treated : 1763°C - 1994°C

Technological Curves of steel grade GCCr-4

Cross Reference Table (Equivalent Grade) of GCCr-4

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