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Grade 9S20
Corresponding Standard ISO 683-18-2014
Bright steel products
Classification Carbon Steel
9S20 Chemical Element Composition Content (%)
Component C Si ① Mn P ② S
Minimum Value - - 0.6 - 0.15
Maximum Value 0.13 0.05 1.2 0.11 0.25
9S20 Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Hardness
HBW
t≤40 As-rolled + peeled (+SH) 330~520 ≤154
40＜t≤63 As-rolled + peeled (+SH) 320~520 ≤154
63＜t≤100 As-rolled + peeled (+SH) 310~470 ≤140
1 Approximate Comparison Table Free-Cutting Structural Steel
China Japan United States International Organization for Standardization Russia
GB ISC JIS ASTM ISO GOST
Y08 U71082 SUM23 1215 9S20 А11
2 Approximate Comparison Table Free-Cutting Structural Steel
China Japan International Organization for Standardization
GB JIS ISO
Y08 SUM21 9S20
3 Approximate Comparison Table Free-Cutting Structural Steel
China Japan United States International Organization for Standardization
GB JIS ASTM ISO
Y08 SUM23 1215 9S20
9S20 Corresponding Standards(Same grade name, different standards)
1 ISO 683-9-1988
9S20 Type 1
2 DIN EN ISO 683-4-2018
9S20
3 ISO 683-4-2016
9S20
4 ISO 683-18-2014
9S20
5 EN 10277-2018
9S20
6 DIN 1651-1970
9S20 1.0711

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