Grade 42CrMo4
European Standard Steel Grade 1.7225
Corresponding Standard EN 10083-3-2006
Brand/Supplier
-> BAOSTEEL
Classification Alloy Steel
42CrMo4 Chemical Element Composition Content (%)
  Component C Si Mn P S Cr Mo
本标准 Minimum Value 0.38 - 0.6 - - 0.9 0.15
Maximum Value 0.45 0.4 0.9 0.025 0.035 1.2 0.3
  Component C Si Mn P S Cr Mo
宝钢(热轧钢板) Minimum Value 0.38 - 0.6 - - 0.9 0.15
Maximum Value 0.45 0.4 0.9 0.015 0.025 1.2 0.3
• Elements not quoted in this table shall not be intentionally added to the steel without the agreement of the purchaser, other than for the purpose of finishing the heat and for boron to have its effect on the hardenability. All reasonable precautions shall be taken to prevent the addition of such elements from scrap or other material used in the manufacture which affect the hardenability, mechanical properties and applicability.
42CrMo4 Mechanical Properties
product form Heat Treatment or Condition
Hardness
HBW
Hot-rolled steel plate (Baosteel) Hot Rolling HV
≤320
Hot-rolled steel plate (Baosteel) Annealing HV
≤180
Hot-rolled steel plate (Baosteel) Water Quenching 800~880℃ HRC
≥52
Hot-rolled steel plate (Baosteel) Oil Quenching 830~890℃ HRC
≥50
• Re: Upper yield strength or, if no yield phenomenon occurs, 0,2 % proof strength R p0,2 .
• initial gauge length L0 = 5.65√S0
• +QT=quenched and tempered ;+A=Annealed;+S=Treated to improve shearability
• Condition +A is not applicable for boron steels.
1 Approximate Comparison Table structural alloy steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Sweden United Kingdom
GB ISC CNS JIS KS ASTM/AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade SS14 BS EN/BS
42CrMo A30422 SCM440 SCM440
SCM440H
SCM440 4140
4142
G41400
G41420
42CrMo4 42CrMo4 1.7225 42CD4 42CrMo4 1.7225 2244 708M40
2 Approximate Comparison Table structural alloy steel
China Japan United States International Organization for Standardization Germany France European Standard Russia Sweden United Kingdom
GB JIS ASTM ISO DIN EN/DIN NF EN/NF EN Numerical Grade GOST SS BS EN/BS
42CrMo SCM440H 4140
4142
42CrMo4 42CrMo4 42CD4 42CrMo4 1.7225 35KHM
38KHM
2244 708M40
CFS11
3 Approximate Comparison Table
Japan International Organization for Standardization European Standard
JIS ISO EN Numerical Grade
SCM440
SCM440H
42CrMo4 42CrMo4 1.7225

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