End-Quench Hardenability Bands — 8720 H to 94B30 H
Tabulations of Band Limits
“J” Distance Sixteenths of an Inch	GRADE
	8720 H		8740 H		8822 H		9260 H		9310 H		94B15 H		94B17 H		94B30 H
	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min
1	48	41	60	53	50	43	—	60	43	36	45	38	46	39	56	49
2	47	38	60	53	49	42	—	60	43	35	45	38	46	39	56	49
3	45	35	60	52	48	39	65	57	43	35	44	37	45	38	55	48
4	42	30	60	51	46	33	64	53	42	34	44	36	45	37	55	48
5	38	26	59	49	43	29	63	46	42	32	43	32	44	34	54	47
6	35	24	58	46	40	27	62	41	42	31	42	28	43	29	54	46
7	33	22	57	43	37	25	60	38	42	30	40	25	42	26	53	44
8	31	21	56	40	35	24	58	36	41	29	38	23	41	24	53	42
9	30	20	55	37	34	24	55	36	40	28	36	21	40	23	52	39
10	29	—	53	35	33	23	52	35	40	27	34	20	38	21	52	37
11	28	—	52	34	32	23	49	34	39	27	33	—	36	20	51	34
12	27	—	50	32	31	22	47	34	38	26	31	—	34	—	51	32
13	26	—	49	31	31	22	45	33	37	26	30	—	33	—	50	30
14	26	—	48	31	30	22	43	33	36	26	29	—	32	—	49	29
15	25	—	46	30	30	21	42	32	36	26	28	—	31	—	48	28
16	25	—	45	29	29	21	40	32	35	26	27	—	30	—	46	27
18	24	—	43	28	29	20	38	31	35	26	26	—	28	—	44	25
20	24	—	42	28	28	—	37	31	35	25	25	—	27	—	42	24
22	23	—	41	27	27	—	36	30	34	25	24	—	26	—	40	23
24	23	—	40	27	27	—	36	30	34	25	23	—	25	—	38	23
26	23	—	39	27	27	—	35	29	34	25	23	—	24	—	37	22
28	23	—	39	27	27	—	35	29	34	25	22	—	24	—	35	21
30	22	—	38	26	27	—	35	28	33	24	22	—	23	—	34	21
32	22	—	38	26	27	—	34	28	33	24	22	—	23	—	34	20

NOTE:

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

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