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Grade 42CrMo4
Old Grade
Corresponding Standard NF A 35-590-1992
Tool steel
Classification Tool Steel
42CrMo4 Chemical Element Composition Content (%)
Component C Si Mn Cr Mo
Minimum Value 0.39 0.1 0.6 0.8 0.15
Maximum Value 0.46 0.4 0.9 1.15 0.3
42CrMo4 Mechanical Properties
condition Heat Treatment or Condition
Hardness
HBW
Tool steel Annealing ≤217
Tool steel Quenching at 850°C, oil cooling, tempering at 180°C, hold for 1h HRC: ≥50
Approximate Comparison Table
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France Russia Sweden United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF GOST SS BS EN/BS
42CrMoH A30425 SCM440H SCM440H SCM440H 4140H H41400 42CrMo4H 42CrMo4 1.7225 42CrMo4
(40CD4) 		≈38ХМ 2244 42CrMo4
42CrMo4 Corresponding Standards(Same grade name, different standards)
1 ISO 683-18-1996
42CrMo4
2 DIN 17200-1987
42CrMo4 1.7225
3 EN 10083-3-2006
42CrMo4 1.7225
4 ISO 683-1-1987
42CrMo4 42CrMo4H 42CrMo4HH 42CrMo4HL
5 EN 10263-4-2001
42CrMo4 1.7225
6 EN 10250-3-1999
42CrMo4 1.7225
7 EN 10269-2006
42CrMo4 1.7225
8 EN 10297-1-2003
42CrMo4 1.7225
9 EN 10305-1-2010
42CrMo4 1.7225
10 DIN 17230-1980
(42CrMo4) 43CrMo4 1.3563 (41CrMo4) (1.7225) (1.7223)
11 DIN EN 10263-4-2002
42CrMo4 1.7225
12 EN 10269-2013
42CrMo4 1.7225
13 DIN 17204-1990
42CrMo4 1.7225
14 NF EN 10269-1999
42CrMo4 1.7225
15 VDI 2230-1-2015
42CrMo 4 1.7225
16 Q/BQB 517-2018
42CrMo4
17 DIN EN 10263-4-2018
42CrMo4 1.7225
18 EN 10263-4-2017
42CrMo4 1.7225
19 DIN EN 10269-2014
42CrMo4 1.7225
20 ISO 683-2-2016
42CrMo4
21 ISO 683-18-2014
42CrMo4
22 EN ISO 683-2-2018
42CrMo4
23 ISO 4954-2018
42CrMo4
24 EN 10132-2021
42CrMo4 1.7225
25 NF A 35-590-1992
42CrMo4 (Y42CD4)
26 NF EN 10083-3-2006
42CrMo4 1.7225 (42CD4)
27 ISO 4954-1-2024
42CrMo4
28 DIN 1654-4-1989
42CrMo4 1.7225

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