20MnB4 1.5525 - EN 10269-2013

Grade	20MnB4
European Standard Steel Grade	1.5525
Corresponding Standard	EN 10269-2013 Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties
Classification	Alloy Steel
Density	7.85 g/cm³

20MnB4 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Cu	B	Al
Minimum Value	0.18	-	0.9	-	-	-	-	0.0008	0.02
Maximum Value	0.23	0.3	1.2	0.025	0.025	0.3	0.25	0.005	-

20MnB4 Mechanical Properties

diameter d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Impact Energy Absorption KV2 J
-*	+AC	≤520	-	-	≥64	-
d≤16**	+QT	800~950	≥640	≥14	≥52	≥40

1 Approximate Comparison Table structural alloy steel

2 Approximate Comparison Table

China		Japan	United States	International Organization for Standardization	European Standard
GB	ISC	JIS	ASTM/AISI	ISO	EN
ML20MnB GB/T 6478-2015 GB/T 6478-2001	A71204	SWRCHB 320 JIS G3508.1-2010	10B22 ASTM A29/A29M-12 ASTM A510/A510M-13	CE20BG2 ISO 4954-1993	20MnB4 EN 10263-4-2001

3 Approximate Comparison Table

International Organization for Standardization	European Standard
ISO	EN	Numerical Grade
20 MnB4	20 MnB4	1.5525

20MnB4 Corresponding Standards(Same grade name, different standards)

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!