Grade 27MnB4
European Standard Steel Grade 1.5536
Corresponding Standard EN 10263-4-2001
Classification Alloy Steel
27MnB4 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Cu B
Minimum Value 0.25 0.15 0.9 - - - - 0.0008
Maximum Value 0.3 0.3 1.2 0.025 0.025 0.3 0.25 0.005
1 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion
China Japan European Standard
GB ISC JIS EN
ML25MnB
GB/T 6478-2015
A71254 SWRCHB 526
JIS G3508.1-2010
27MnB4
23MnB4
EN 10263-4-2001
2 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion
International Organization for Standardization European Standard
ISO EN Numerical Grade
27 MnB4 27 MnB4 1.5536
27MnB4 Corresponding Standards(Same grade name, different standards)

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