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42 MoCr 11 AT

Romania STAS 42MoCr11AT Steels for motor vehicles and tractors. Grades and general technical requirements for quality and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 42MoCr11AT / 42 MoCr 11 AT
Category Grade Standard Region/Area Standard Content
Metals 42 MoCr 11 AT STAS 8580 Romania Steels for motor vehicles and tractors. Grades and general technical requirements for quality

Chemical composition(mass fraction)(wt.%) of the 42 MoCr 11 AT

Element Min Max Similar
Si 0.1700 0.3700 -
S - 0.0250 -
P - 0.0250 -
Ni - 0.3000 -
Mo 0.1500 0.3000 -
Mn 0.6000 0.9000 -
Cu - 0.3000 -
Cr 0.9000 1.1000 -
C 0.3800 0.4500 -
As - 0.0500 -

Mechanical Properties of steel grade 42 MoCr 11 AT

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)
643 (≥) 473 (≥) 33 34 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 121

Physical Properties of steel grade 42 MoCr 11 AT

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
12 - -     0.43 -  
395 136 - 41.3 333   -  
482 - 43 21.2   314 244

Heat Treatment of steel grade 42 MoCr 11 AT

Heat treated : 1517°C - 1871°C

Technological Curves of steel grade 42 MoCr 11 AT

Cross Reference Table (Equivalent Grade) of 42 MoCr 11 AT

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