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France AFNOR NF 28Mn6 淬火和回火钢 - 第1部分:一般交货技术条件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 28Mn6 / 28 Mn 6
Category Grade Standard Region/Area Standard Content
Metals 28 Mn 6 NF EN 10083-1 France 淬火和回火钢 - 第1部分:一般交货技术条件

Chemical composition(mass fraction)(wt.%) of the 28 Mn 6

Element Min Max Similar
Si - 0.4000 -
S - 0.0350 -
P - 0.0300 -
Ni - 0.4000 -
Mo - 0.1000 -
Mn 1.3000 1.6500 -
Cr+Mo+Ni - 0.6300 -
Cr - 0.4000 -
C 0.2500 0.3200 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Ni - 0.4000 -
Mo - 0.1000 -
Mn 1.3000 1.6500 -
Cr+Mo+Ni - 0.6300 -
Cr - 0.4000 -
C 0.2500 0.3200 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Ni - 0.4000 -
Mo - 0.1000 -
Mn 1.3000 1.6500 -
Cr+Mo+Ni - 0.6300 -
Cr - 0.4000 -
C 0.2500 0.3200 -

Mechanical Properties of steel grade 28 Mn 6

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)
267 (≥) 456 (≥) 42 12 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 323

Physical Properties of steel grade 28 Mn 6

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
13 - -     0.21 -  
278 837 - 33.3 411   -  
338 - 22 44.2   322 322

Heat Treatment of steel grade 28 Mn 6

Heat treated : 1139°C - 1121°C

Technological Curves of steel grade 28 Mn 6

Cross Reference Table (Equivalent Grade) of 28 Mn 6

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