37MnB5 1.5538 - EN 10263-4-2017

Grade	37MnB5
European Standard Steel Grade	1.5538
Corresponding Standard	EN 10263-4-2017 Steel rod, bars and wire for cold heading and cold extrusion Part 4: Technical delivery conditions for steels for quenching and tempering
Classification	Alloy Steel

37MnB5 Chemical Element Composition Content (%)

Component	C	Si ^ⓔ	Mn	P	S	Cr ^ⓕ	Cu	B
Minimum Value	0.35	-	1.15	-	-	-	-	0.0008
Maximum Value	0.4	0.3	1.45	0.025	0.025	0.3	0.25	0.005

37MnB5 Mechanical Properties

condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Reduction of Area ψ %
Bars, rods, wires; 5<d≤40	Spheroidizing or Spheroidizing and Peeling (+AC or +AC+PE)	≤620	≥62
Wire; 2<d≤5	Unheated, Cold Drawn, and Spheroidized (+U+C+AC)	≤610	≥64
Wire; 5<d≤40	Unheated, Cold Drawn, and Spheroidized (+U+C+AC)	≤600	≥64
Wire; 2<d≤5	Unheated, Cold Drawn, Spheroidized, and Quenched Rolling (+U+C+AC+LC)	≤650	≥62
Wire; 5<d≤40	Unheated, Cold Drawn, Spheroidized, and Quenched Rolling (+U+C+AC+LC)	≤640	≥62
Wire; 5<d≤40	Spheroidizing + Cold Drawn (+AC+C)	≤720	≥57

1 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion

China		Japan	International Organization for Standardization	European Standard
GB	ISC	JIS	ISO	EN
ML35MnB GB/T 6478-2015 GB/T 6478-2001	A71354	SWRCHB 734 JIS G3508.1-2010	35MnB5E ISO 4954-1993	37MnB5 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
37MnB5	37MnB5	1.5538

37MnB5 Corresponding Standards(Same grade name, different standards)

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