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Grade 34CrMo4
European Standard Steel Grade 1.7220
Corresponding Standard EN 10083-3-2006
Brand/Supplier
-> BENSTEEL
-> BAOSTEEL
Classification Alloy Steel
34CrMo4 Chemical Element Composition Content (%)
  Component C Si Mn P S Cr Mo More
标准 Minimum Value 0.32 - 0.6 - - 0.9 0.15 P+S≤0.02
Maximum Value 0.37 0.4 0.9 0.025 0.035 1.2 0.3
  Component C Si Mn P S Cr Ni Cu Mo Al More
本钢特钢 Minimum Value 0.32 0.17 0.6 - - 0.9 - - 0.15 0.02  
Maximum Value 0.36 0.35 0.8 0.015 0.01 1.1 0.1 0.1 0.3 0.05
  Component C Si Mn P S Cr Mo More
宝钢(热轧钢板) Minimum Value 0.3 - 0.6 - - 0.9 0.15  
Maximum Value 0.37 0.4 0.9 0.015 0.025 1.2 0.25
• 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.
34CrMo4 Mechanical Properties
product form Heat Treatment or Condition
Hardness
HBW
Hot-rolled steel plate (Baosteel) Hot Rolling HV
≤310
Hot-rolled steel plate (Baosteel) Annealing HV
≤180
Hot-rolled steel plate (Baosteel) Water Quenching 800~880℃ HRC
≥50
Hot-rolled steel plate (Baosteel) Oil Quenching 830~890℃ HRC
≥48
• 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 France European Standard
GB ISC CNS JIS KS ASTM NF EN/NF EN
30CrMo A30302 SCM430 SCM430 SCM430 4130 30CD4 34CrMo4
2 Approximate Comparison Table structural alloy steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Russia Sweden United Kingdom
GB ISC CNS JIS KS ASTM/AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST SS14 BS EN/BS
35CrMo
35CrMoV 		A30352
A31352 		SCM435 SCM435
SCM435H 		SCM435 4135 G41350 34CrMo4 34CrMo4 1.7220 35CD4 34CrMo4 1.7220 35XM
35ХМФ 		2234 708A37
CDS13
3 Approximate Comparison Table
China United States International Organization for Standardization Germany France
GB ISC ASTM/AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF
ML35CrMo A30354 4135
A320ML7B 		G41350 34CrMo4E
(C31) 		34CrMo4 1.7220 34CD4
4 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
35CrMo
ZG35CrMo 		SCM435H 4135 34CrMo4 34CrMo4 34CD4
35CD4 		34CrMo4 1.7220 35KHM
35KHML 		2234 708A30
708M32
5 Approximate Comparison Table cast 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
ZG35CrMo
35CrMo 		SCM435H 4135 34CrMo4 34CrMo4 34CD4
35CD4 		34CrMo4 1.7220 35KHM
35KHML 		2234 708A30
708M32
6 Approximate Comparison Table
China Japan United States International Organization for Standardization Germany
GB JIS ASTM ISO DIN EN/DIN
ML35CrMo SCM435 4135 34CrMo4E 34CrMo4
7 Approximate Comparison Table
Japan International Organization for Standardization European Standard
JIS ISO EN Numerical Grade
SCM435
SCM435H 		34CrMo4 34CrMo4 1.7220
34CrMo4 Corresponding Standards(Same grade name, different standards)
1 ISO 683-18-1996
34CrMo4
2 DIN 17200-1987
34CrMo4 1.7220
3 EN 10083-3-2006
34CrMo4 1.7220
4 EN 10263-4-2001
34CrMo4 1.7220
5 EN 10250-3-1999
34CrMo4 1.7220
6 EN 10297-1-2003
34CrMo4 1.7220
7 DIN EN 10263-4-2002
34CrMo4 1.7220
8 DIN 17204-1990
34CrMo4 1.7220
9 VDI 2230-1-2015
34CrMo 4 1.7220
10 DIN EN 10263-4-2018
34CrMo4 1.7220
11 EN 10263-4-2017
34CrMo4 1.7220
12 ISO 683-2-2016
34CrMo4
13 ISO 683-18-2014
34CrMo4
14 EN ISO 683-2-2018
34CrMo4
15 ISO 4954-2018
34CrMo4
16 EN 10132-2021
34CrMo4 1.7220
17 NF EN 10083-3-2006
34CrMo4 1.7220 (34CD4)
18 GB /T 18248-2021
34CrMo4
19 ISO 4954-1-2024
34CrMo4
20 DIN 1654-4-1989
34CrMo4 1.7220

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