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Description

Romania STAS/SR 20MnCr12 Alloy structural steel and 20MnCr12 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: 20MnCr12
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel 20MnCr12 STAS/SR Romania Alloy structural steel
18CrNi20X
18CrNi20XS
18MnCr11
18MnCr11S
18MnCr11X
18MnCr11XS
19MoCr11
!9MoCr11S
19MoCr11X
19MoCr11XS

Chemical composition(mass fraction)(wt.%) of the 20MnCr12

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Mo(%) Cu(%) Ti(%)
0.17-0.22 0.17-0.37 1.10- 1.40 0.035 0.035 1.00- 1.30 0.3 0.15 0.30 0.02

Mechanical Properties of steel grade 20MnCr12

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)
553 (≥) 884 (≥) 44 13 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 311

Physical Properties of steel grade 20MnCr12

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
24 - -     0.12 -  
229 443 - 42.3 344   -  
547 - 22 34.2   322 221

Heat Treatment of steel grade 20MnCr12

Heat treated : 1522°C - 1762°C

Technological Curves of steel grade 20MnCr12

Cross Reference Table (Equivalent Grade) of 20MnCr12

Grade Standard Country Application
20MnCr12 STAS/SR Romania Alloy structural steel
20MnCr12S STAS/SR Romania Alloy structural steel
20MnCr12X STAS/SR Romania Alloy structural steel
20MnCr12XS STAS/SR Romania Alloy structural steel

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