End-Quench Hardenability Bands — 5140 H to 6150 H
Tabulations of Band Limits
“J” Distance Sixteenths of an Inch	GRADE
	5140 H		5147 H		5150 H		5155 H		5160 H		51B60 H		6118 H		6150 H
	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min
1	60	53	64	57	65	59	—	60	—	60	—	60	46	39	65	59
2	59	52	64	56	65	58	65	59	—	60	—	60	44	36	65	58
3	58	50	63	55	64	57	64	58	—	60	—	60	38	28	64	57
4	57	48	62	54	63	56	64	57	65	59	—	60	33	24	64	56
5	56	43	62	53	62	53	63	55	65	58	—	60	30	22	63	55
6	54	38	61	52	61	49	63	52	64	56	—	59	28	20	63	53
7	52	35	61	49	60	42	62	47	64	52	—	58	27	—	62	50
8	50	33	60	45	59	38	62	41	63	47	—	57	26	—	61	47
9	48	31	60	40	58	36	61	37	62	42	—	54	26	—	61	43
10	46	30	59	37	56	34	60	36	61	39	—	50	25	—	60	41
11	45	29	59	35	55	33	59	35	60	37	—	44	25	—	59	39
12	43	28	58	34	53	32	57	34	59	36	65	41	24	—	58	38
13	42	27	58	33	51	31	55	34	58	35	65	40	24	—	57	37
14	40	27	57	32	50	31	52	33	56	35	64	39	23	—	55	36
15	39	26	57	32	48	30	51	33	54	34	64	38	23	—	54	35
16	38	25	56	31	47	30	49	32	52	34	63	37	22	—	52	35
18	37	24	55	30	45	29	47	31	48	33	61	36	22	—	50	34
20	36	23	54	29	43	28	45	31	47	32	59	34	21	—	48	32
22	35	21	53	27	42	27	44	30	46	31	57	33	21	—	47	31
24	34	20	52	26	41	26	43	29	45	30	55	31	20	—	46	30
26	34	—	51	25	40	25	42	28	44	29	53	30	—	—	45	29
28	33	—	50	24	39	24	41	27	43	28	51	28	—	—	44	27
30	33	—	49	22	39	23	41	26	43	28	49	27	—	—	43	26
32	32	—	48	21	38	22	40	25	42	27	47	25	—	—	42	25

NOTE:

These values were adjusted to the nearest Rockwell “C” point, and are used when points are selected and specified.

Gerdau MACSTEEL Home Profile | Capabilities | Quality | Engineered Bar Products | NitroSteel Division Heating Treating Division | Capital Improvement | News Releases/Hot Links | Site Map | Contact Info | Metallurgical Data Book