Grade 37Cr4
Corresponding Standard ISO 683-18-2014
Bright steel products
Classification Alloy Steel
37Cr4 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Cu
Minimum Value 0.34 0.1 0.6 - - 0.9 -
Maximum Value 0.41 0.4 0.9 0.025 0.035 1.2 0.4
37Cr4 Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Hardness
HBW
Impact Energy Absorption
KV2
J
16<t≤100 S.annealed +peeled (+A +SH) ≤235
16<t≤40 Quenched and tempered and peeled (+QT+SH) 850~1000 ≥630 ≥13 ≥35
40<t≤100 Quenched and tempered and peeled (+QT+SH) 750~900 ≥510 ≥14 ≥35
1 Approximate Comparison Table
China International Organization for Standardization European Standard
GB ISO EN Numerical Grade
35Cr 37Cr4 37Cr4 1.7034
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 W-Nr. NF EN/NF EN Numerical Grade GOST SS BS EN/BS
35Cr SCr435H Gr.5135 37Cr4 37Cr4 1.7034 37Cr4
38C4
37Cr4 1.7034 38KHA
40KH
2245 530A36
530M36
3 Approximate Comparison Table
International Organization for Standardization European Standard
ISO EN Numerical Grade
37Cr4 37Cr4 1.7034

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