34MnB5 - ISO 4954-2018

Grade	34MnB5
Corresponding Standard	ISO 4954-2018 Steels for Cold Heading and Cold Extruding
Classification	Alloy Steel

34MnB5 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Cu	B
Minimum Value	0.31	-	1.2	-	-	-	-	0.0008
Maximum Value	0.37	0.3	1.5	0.025	0.025	0.3	0.25	0.005

34MnB5 Mechanical Properties

diameter d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Reduction of Area ψ %
2＜d≤40	+AR+C+AC+LC	≤680	≥55
5＜d≤40	+AC+C	≤680	≥55

1 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion

Japan	International Organization for Standardization	European Standard
JIS	ISO	EN	Numerical Grade
SWRCHB620	20MnB5 23MnB5 26MnB5 34MnB5	20MnB5 23MnB5 26MnB5 34MnB5	1.5530

2 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion

Japan	International Organization for Standardization	European Standard
JIS	ISO	EN
SWRCHB620	34MnB5	34MnB5

3 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion

China		Japan	United States	International Organization for Standardization
YB	GB	JIS	ASTM	ISO
QML35MnB	ML35MnB	SWRCHB734	15B36	34MnB5

34MnB5 Corresponding Standards(Same grade name, different standards)

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