9/0 - BS 3111(1)-1987

Grade	9/0
Corresponding Standard	BS 3111(1)-1987 Steel for cold forged fasteners and similar components — Part 1: Specification for carbon and low alloy steel wire
Classification	Alloy Steel
Properties	Good Forgability

9/0 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	B
Minimum Value	0.15	-	0.6	-	-	0.0008
Maximum Value	0.2	0.4	0.9	0.035	0.035	0.005

9/0 Mechanical Properties

diameter d mm	Mark	Tensile Strength σ_b Mpa	Reduction of Area ψ %
All	COND A	≤490	≥60
All	COND B	≤540	≥57
5＜d≤10	COND C	≤630
d＞10	COND C	≤560
5＜d≤10	COND D	≤690	≥52
d＞10	COND D	≤630	≥52

◎ the abbreviation COND and one of the following letters denoting the delivery conditions:
• COND A - drawn to size and finally spheroidize annealed;
• COND B - drawn, spheroidize annealed and finally light drawn;
• COND C - spheroidize annealed and finally light drawn;
• COND D - direct drawn.

1 Approximate Comparison Table Cold Heading Steel

China		United States		Germany		France	Russia	United Kingdom
GB	ISC	ASTM/AISI	UNS	DIN EN/DIN	W-Nr.	NF EN/NF	GOST	BS EN/BS
ML30CrMo	A30304	4130	G41300	≈25CrMo4	1.7218	30CD4	30ХМА	9/0

2 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion

China	Japan	South Korea	International Organization for Standardization	United Kingdom
GB	JIS	KS	ISO	BS EN/BS
ML15MnB	SWRCHB620	SWRCHB620	CE20BG2	9/0

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