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21MoMnCr12z

Description

Romania STAS/SR 21MoMnCr12z Structural steel and 21MoMnCr12z Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: 21MoMnCr12z
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel 21MoMnCr12z STAS/SR Romania Structural steel
OLT35
OI.T45
OLT65
10CrMOL0
10MoCr50
14CrMo4
16Mo3
OLT35K
OI.T45K
OPM

Chemical composition(mass fraction)(wt.%) of the 21MoMnCr12z

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Mo(%) V(%)
0.18-0.24 0.17-0.37 0.80-1.20 0.025 0.020 1.00-1.40 0.30 0.20-0.30 0.020-0.060

Mechanical Properties of steel grade 21MoMnCr12z

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)
933 (≥) 221 (≥) 41 13 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 243

Physical Properties of steel grade 21MoMnCr12z

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
42 - -     0.12 -  
357 884 - 12.3 333   -  
878 - 22 42.2   212 243

Heat Treatment of steel grade 21MoMnCr12z

Heat treated : 1659°C - 1274°C

Technological Curves of steel grade 21MoMnCr12z

Cross Reference Table (Equivalent Grade) of 21MoMnCr12z

Grade Standard Country Application
21MoMnCr12z STAS/SR Romania Structural steel

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