AISI-SAE Standard Carbon Steels Composition Free-Machining Grades — Resulfurized and Rephosphorized

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 and Rephosphorized
1211	G12110	0.13 max	0.60–0.90	0.07–0.12	0.10–0.15
1212	G12120	0.13 max	0.70–1.00	0.07–0.12	0.16–0.23
1213	G12130	0.13 max	0.70–1.00	0.07–0.12	0.24–0.33
1215	G12150	0.09 max	0.75–1.05	0.04–0.09	0.26–0.35
12L14d	G12144	0.15 max	0.85–1.15	0.04–0.09	0.26–0.35

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