Grade 10B21
USA UNS G10211
Corresponding Standard SAE J 403-2001
Chemical Compositions of Carbon Steels
Brand/Supplier
South Korea -> POSCO
Classification Carbon Steel
Properties Good Weldability Carburizing Capability
10B21 Chemical Element Composition Content (%)
  Component C Si Mn P S Cr Ni Cu B
本标准 Minimum Value 0.18 - 0.6 - - - - - 0.0005
Maximum Value 0.23 0.6 0.9 0.03 0.05 0.2 0.2 0.2 0.003
  Component C Si Mn P S B
浦项 Minimum Value 0.18 0.15 0.6 - - 0.0005
Maximum Value 0.24 0.3 1.1 0.04 0.05 -
1 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion
China Japan United States International Organization for Standardization European Standard
GB ISC JIS ASTM ISO EN
ML20B
GB/T 6478-2015
GB/T 6478-2001
A70204 SWRCHB 223
JIS G3508-1
10B21
ASTM A29/A29M-12
ASTM A510/A510-13
CE20BG1
ISO 4954-1993
17B2
EN 10263-4-2001
2 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion
China United States
YB GB ASTM
QML20B ML20B 10B21
3 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion
China United States
GB ASTM
ML20B
GB/T 28905
GB/T 6478-2015
10B21
ASTM A29/A39-23
10B21 Corresponding Standards(Same grade name, different standards)

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