65Mn U21653 - GB /T 1222-2025

65Mn Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu
Minimum Value	0.62	0.17	0.9	-	-	-	-	-
Maximum Value	0.7	0.37	1.2	0.025	0.02	0.25	0.35	0.2

65Mn Mechanical Properties

Heat Treatment or Condition	Tensile Strength σ_b Mpa	Specified Plastic Yield Strength Rp_0.2 Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %
Quenched in oil at 830±20°C and tempered at 540±50°C	≥980	ReL ≥785	≥8	≥30

1 Approximate Comparison Table Spring Steel

2 Approximate Comparison Table High-Quality Carbon Structural Steel

China		United States	International Organization for Standardization	Germany	France
GB	ISC	ASTM/AISI	ISO	L-Nr.	NF EN/NF
65Mn (GB/T 699-2015)	U21652	1565 (ASTM A29/A29M:2005)	C60E4 (ISO 683-18:1996)	C60E (EN 1008-1:1991+A1:1996) (EN 10084:1998)	1.1221

3 Approximate Comparison Table

China	Japan	United States	International Organization for Standardization	Russia
GB	JIS	ASTM/AISI	ISO	GOST
65Mn	SWRH67B	1566	Type SC Type DC	65Г

65Mn 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"!