Grade G42CrMo4
Germany W-Nr. 1.7231
Corresponding Standard DIN EN 10293-2005
Steel castings for general engineering uses
Classification Cast Steel
G42CrMo4 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Mo
Minimum Value 0.38 - 0.6 - - 0.8 0.15
Maximum Value 0.45 0.6 1 0.025 0.02 1.2 0.3
G42CrMo4 Mechanical Properties
thickness
t
mm
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Impact Energy Absorption
KV2
J
t≤100 Quenching + tempering (+QT1)
Quenching temperature 880~950°C, oil cooling, tempering temperature 600~650°C
800~950 ≥600 ≥12 ≥31
100<t≤150 Quenching + tempering (+QT1)
Quenching temperature 880~950°C, oil cooling, tempering temperature 600~650°C
700~850 ≥550 ≥10 ≥27
150<t≤250 Quenching + tempering (+QT1)
Quenching temperature 880~950°C, oil cooling, tempering temperature 600~650°C
650~800 ≥350 ≥10 ≥16
t≤100 Quenching + tempering (+QT2)
Quenching temperature 880~950°C, water cooling, tempering temperature 550~600°C
850~1000 ≥700 ≥10 ≥27
New and Old Grade Replacement List
Corresponding Standard Grade
DIN 17205-1992
Grade
Germany W-Nr.
DIN EN 10293-2005
Grade
Germany W-Nr.
G42CrMo4 Corresponding Standards(Same grade name, different standards)

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