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CR250 Class B

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International ISO CR250ClassB Cold-reduced carbon steel sheet of structural quality and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: CR250ClassB / CR250 Class B
Category Grade Standard Region/Area Standard Content
Metals CR250 Class B ISO 4997 International Cold-reduced carbon steel sheet of structural quality

Chemical composition(mass fraction)(wt.%) of the CR250 Class B

Element Min Max Similar
N - 0.0090 -
P - 0.3500 -
S - 0.0350 -
C - 0.2000 -
V - 0.0080 -
Ti - 0.0080 -
S - 0.0350 -
P - 0.0350 -
Ni - 0.2000 -
Nb - 0.0080 -
N - 0.0150 -
Mo - 0.0600 -
Cu - 0.2000 -
Cr+Ni+Cu+Mo - 0.5000 -
Cr+Mo - 0.1600 -
Cr - 0.1500 -
C - 0.2000 -

Mechanical Properties of steel grade CR250 Class B

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)
488 (≥) 851 (≥) 34 42 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 231

Physical Properties of steel grade CR250 Class B

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 - -     0.41 -  
871 324 - 12.3 324   -  
721 - 14 23.2   422 241

Heat Treatment of steel grade CR250 Class B

Heat treated : 1541°C - 1298°C

Technological Curves of steel grade CR250 Class B

Cross Reference Table (Equivalent Grade) of CR250 Class B

Grade Standard Country Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1
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