STANDARD ALLOY STEELS

Ladle Chemical Ranges and Limits

Bars, Blooms, Billets and Slabs

	Chemical Composition Ranges and Limits, percent
AISI Number	C	Mn	P Max.	S Max.	Si	Ni	Cr	Mo
4130	0.28/0.33	0.40/0.60	0.035	0.040	0.20/0.35	---	0.80/1.10	0.15/0.25
4137	0.35/0.40	0.70/0.90	0.035	0.040	0.20/0.35	---	0.80/1.10	0.15/0.25
4140	0.38/0.43	0.75/1.00	0.035	0.040	0.20/0.35	---	0.80/1.10	0.15/0.25
4142	0.40/0.45	0.75/1.00	0.035	0.040	0.20/0.35	---	0.80/1.10	0.15/0.25
4145	0.43/0.48	0.75/1.00	0.035	0.040	0.20/0.35	---	0.80/1.10	0.15/0.25
4147	0.45/0.50	0.75/1.00	0.035	0.040	0.20/0.35	---	0.80/1.10	0.15/0.25
4150	0.48/0.53	0.75/1.00	0.035	0.040	0.20/0.35	---	0.80/1.10	0.15/0.25
4161	0.56/0.64	0.75/1.00	0.035	0.040	0.20/0.35	---	0.70/0.90	0.25/0.35
4320	0.17/0.22	0.45/0.65	0.035	0.040	0.20/0.35	1.65/2.00	0.40/0.60	0.20/0.30
4340	0.38/0.43	0.60/0.80	0.035	0.040	0.20/0.35	1.65/2.00	0.70/0.90	0.20/0.30
4419	0.18/0.23	0.45/0.65	0.035	0.040	0.20/0.35	---	---	0.45/0.60
4615	0.13/0.18	0.45/0.65	0.035	0.040	0.20/0.35	1.65/2.00	---	0.20/0.30
4620	0.17/0.22	0.45/0.65	0.035	0.040	0.20/0.35	1.65/2.00	---	0.20/0.30
4621	0.18/0.23	0.70/0.90	0.035	0.040	0.20/0.35	1.65/2.00	---	0.20/0.30
4626	0.24/0.29	0.45/0.65	0.035	0.040	0.20/0.35	0.70/1.00	---	0.15/0.25
4718	0.16/0.21	0.70/0.90	0.035	0.040	0.20/0.35	0.90/1.20	0.35/0.55	0.30/0.40
4720	0.17/0.22	0.50/0.70	0.035	0.040	0.20/0.35	0.90/1.20	0.35/0.55	0.15/0.25
4815	0.13/0.18	0.40/0.60	0.035	0.040	0.20/0.35	3.25/3.75	---	0.20/0.30
4817	0.15/0.20	0.40/0.60	0.035	0.040	0.20/0.35	3.25/3.75	---	0.20/0.30
4820	0.18/0.23	0.50/0.70	0.035	0.040	0.20/0.35	3.25/3.75	---	0.20/0.30
5120	0.17/0.22	0.70/0.90	0.035	0.040	0.20/0.35	---	0.70/0.90	---
5130	0.28/0.33	0.70/0.90	0.035	0.040	0.20/0.35	---	0.80/1.10	---
5132	0.30/0.35	0.60/0.80	0.035	0.040	0.20/0.35	---	0.75/1.00	---
5135	0.33/0.38	0.60/0.80	0.035	0.040	0.20/0.35	---	0.80/1.05	---
5140	0.38/0.43	0.70/0.90	0.035	0.040	0.20/0.35	---	0.70/0.90	---
5145	0.43/0.48	0.70/0.90	0.035	0.040	0.20/0.35	---	0.70/0.90	---
5147	0.46/0.51	0.70/0.95	0.035	0.040	0.20/0.35	---	0.85/1.15	---
5150	0.48/0.53	0.70/0.90	0.035	0.040	0.20/0.35	---	0.70/0.90	---
5155	0.51/0.59	0.70/0.90	0.035	0.040	0.20/0.35	---	0.70/0.90	---
6150	0.48/0.53	0.70/0.90	0.035	0.040	0.20/0.35	---	0.80/1.10	0.15 min.
8615	0.13/0.18	0.70/0.90	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.15/0.25
8617	0.15/0.20	0.70/0.90	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.15/0.25
8620	0.18/0.23	0.70/0.90	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.15/0.25
8622	0.20/0.25	0.70/0.90	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.15/0.25
8625	0.23/0.28	0.70/0.90	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.15/0.25
8627	0.25/0.30	0.70/0.90	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.15/0.25
8630	0.28/0.33	0.70/0.90	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.15/0.25
8637	0.35/0.40	0.75/1.00	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.15/0.25
8640	0.38/0.43	0.75/1.00	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.15/0.25
8642	0.40/0.45	0.75/1.00	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.15/0.25
8645	0.43/0.48	0.75/1.00	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.15/0.25
8655	0.51/0.59	0.75/1.00	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.15/0.25
8720	0.18/0.23	0.70/0.90	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.20/0.30
8740	0.38/0.43	0.75/1.00	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.20/0.30
8822	0.20/0.25