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Home Material GB /T 18248-2021
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Grade 35CrMo
Corresponding Standard GB /T 18248-2021
Seamless steel tubes for gas cylinder
Classification Alloy Steel
35CrMo Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo More
Minimum Value 0.32 0.17 0.4 - - 0.8 - - 0.15 P+S≤0.025；V+Nb+Ti+B+Zr≤0.15ⓐ
Maximum Value 0.4 0.37 0.7 0.02 0.01 1.1 0.3 0.2 0.25
35CrMo Mechanical Properties
condition Test Temperature Mark
Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Impact Energy Absorption
KV2
J
Steel pipe specimen Room Temperature Ⅰ 830~870°C Quenching (Normalizing), Water, Oil Cooling + 500~600°C Tempering, Water, Oil Cooling ≥980 ≥835 ≥12 ≥27(-50°C)
Steel pipe specimen Room Temperature Ⅱ Tempering ≥865 ≥740 ≥14②
Steel pipe outer diameter D＞140mm; t=3*~5, Transverse Ⅱ Tempering ≥30③；≥24④
Steel pipe outer diameter D＞140mm; t=5~7.5, Transverse Ⅱ Tempering ≥35③；≥28④
Steel pipe outer diameter D＞140mm; t=7.5~10, Transverse Ⅱ Tempering ≥40③；≥32④
Steel pipe outer diameter D≤140mm; t=3~10, Longitudinal Ⅱ Tempering ≥60③；≥48④
1 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
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
35CrMo
ZG35CrMo 		SCM435H 4135 34CrMo4 34CrMo4 34CD4
35CD4 		34CrMo4 1.7220 35KHM
35KHML 		2234 708A30
708M32
3 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
35CrMo Corresponding Standards(Same grade name, different standards)
1 GB /T 3077-1999
35CrMo A30352
2 GB /T 17107-1997
35CrMo
3 GB /T 3077-2015
35CrMo A30352
4 GB /T 3078-2019
35CrMo
5 JB /T 6396-2006
35CrMo
6 NB /T 47008-2017
35CrMo
7 GB /T 18248-2021
35CrMo
8 JB /T 6908-2020
35CrMo A30352
9 GB /T 37601-2019
35CrMo

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