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20 MnMoNi 4 5

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Germany SEW 20MnMoNi45 Steels for larger forgings; quality regulations and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20MnMoNi45 / 20 MnMoNi 4 5
Category Grade Standard Region/Area Standard Content
Metals 20 MnMoNi 4 5 SEW 550 Germany Steels for larger forgings; quality regulations

Chemical composition(mass fraction)(wt.%) of the 20 MnMoNi 4 5

Element Min Max Similar
C - 0.2300 -
Mn 1.0000 1.5000 -
P - 0.0200 -
S - 0.0150 -
Si 0.1500 0.3500 -
Ni 0.4000 0.8000 -
Cr - 0.2000 -
Mo 0.4000 0.6000 -
V - 0.0200 -
N - 0.0150 -
Al 0.0100 0.0500 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Ni 0.4000 0.8000 -
Mo 0.4500 0.6000 -
Mn 1.0000 1.5000 -
Cr - 0.5000 -
C 0.1700 0.2300 -

Mechanical Properties of steel grade 20 MnMoNi 4 5

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)
923 (≥) 474 (≥) 33 14 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 213

Physical Properties of steel grade 20 MnMoNi 4 5

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
33 - -     0.12 -  
286 939 - 24.3 233   -  
989 - 43 41.2   444 224

Heat Treatment of steel grade 20 MnMoNi 4 5

Heat treated : 1334°C - 1432°C

Technological Curves of steel grade 20 MnMoNi 4 5

Cross Reference Table (Equivalent Grade) of 20 MnMoNi 4 5

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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