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18 CrMo 4

Favorite Datasheet

Germany DIN 18CrMo4 Open die steel forging for general engineering purposes - part 3 : alloy special steels pies forgs en acier pour usage gal. partie 3 : aciers spiaux alli and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 18CrMo4 / 18 CrMo 4
Category Grade Standard Region/Area Standard Content
Metals 18 CrMo 4 DIN EN 10250-3 Germany Open die steel forging for general engineering purposes - part 3 : alloy special steels pies forgs en acier pour usage gal. partie 3 : aciers spiaux alli

Chemical composition(mass fraction)(wt.%) of the 18 CrMo 4

Element Min Max Similar
Mo 0.1500 0.2500 -
Cr 0.9000 1.2000 -
P - 0.0350 -
S - 0.0350 -
Mn 0.6000 0.9000 -
Si - 0.4000 -
C 0.1500 0.2100 -
Si - 0.3000 -
S - 0.0250 -
P - 0.0250 -
Mo 0.1500 0.2500 -
Mn 0.6000 0.9000 -
Cu - 0.2500 -
Cr 0.9000 1.2000 -
C 0.1500 0.2100 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Mo 0.1500 0.2500 -
Mn 0.6000 0.9000 -
Cr 0.9000 1.2000 -
C 0.1500 0.2100 -

Mechanical Properties of steel grade 18 CrMo 4

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)
732 (≥) 798 (≥) 21 24 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 344

Physical Properties of steel grade 18 CrMo 4

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
32 - -     0.12 -  
199 564 - 43.3 341   -  
582 - 43 41.2   221 422

Heat Treatment of steel grade 18 CrMo 4

Heat treated : 1315°C - 1739°C

Technological Curves of steel grade 18 CrMo 4

Cross Reference Table (Equivalent Grade) of 18 CrMo 4

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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Jiangyou Longhai Special Steel Co.,Ltd.

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