AISI-SAE Standard Carbon Steels Coposition Free-Machining Grades

AISI-SAE Number	UNS Number	Composition
AISI-SAE Number	UNS Number	C	Mn	P(max)**	S(max)**
Nonresulfurized Grades — Over 1 per cent Mn
Free-Machining Grades — Resulfurized
1110	G11100	0.08–0.13	0.30–0.60	0.040	0.08–0.13
1117	G11170	0.14–0.20	1.00–1.30	0.040	0.08–0.13
1118	G11180	0.14–0.20	1.30–1.60	0.040	0.08–0.13
1137	G11370	0.32–0.39	1.35–1.65	0.040	0.08–0.13
1139	G11390	0.35–0.43	1.35–1.65	0.040	0.13–0.20
1140	G11400	0.37–0.44	0.70–1.00	0.040	0.08–0.13
1141	G11410	0.37–0.45	1.35–1.65	0.040	0.08–0.13
1144	G11440	0.40–0.48	1.35–1.65	0.040	0.24–0.33
1146	G11460	0.42–0.49	0.70–1.00	0.040	0.08–0.13
1151	G11510	0.48–0.55	0.70–1.00	0.040	0.08–0.13

* Material used in wire rods and wire only.
** Values given are maximum percentages, except where a range of values is given.