End-Quench Hardenability Bands — 81B45 H to 86B30 H
Tabulations of Band Limits
“J” Distance Sixteenths of an Inch	GRADE
	81B45 H		8617 H		8620 H		8622 H		8625 H		8627 H		8630 H		86B30 H
	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min
1	63	56	46	39	48	41	50	43	52	45	54	47	56	49	56	49
2	63	56	44	33	47	37	49	39	51	41	52	43	55	46	55	49
3	63	56	41	27	44	32	47	34	48	36	50	38	54	43	55	48
4	63	56	38	24	41	27	44	30	46	32	48	35	52	39	55	48
5	63	55	34	20	37	23	40	26	43	29	45	32	50	35	54	48
6	63	54	31	—	34	21	37	24	40	27	43	29	47	32	54	48
7	62	53	28	—	32	—	34	22	37	25	40	27	44	29	53	48
8	62	51	27	—	30	—	32	20	35	23	38	26	41	28	53	47
9	61	48	26	—	29	—	31	—	33	22	36	24	39	27	52	46
10	60	44	25	—	28	—	30	—	32	21	34	24	37	26	52	44
11	60	41	24	—	27	—	29	—	31	20	33	23	35	25	52	42
12	59	39	23	—	26	—	28	—	30	—	32	22	34	24	51	40
13	58	38	23	—	25	—	27	—	29	—	31	21	33	23	51	39
14	57	37	22	—	25	—	26	—	28	—	30	21	33	22	50	38
15	57	36	22	—	24	—	26	—	28	—	30	20	32	22	50	36
16	56	35	21	—	24	—	25	—	27	—	29	20	31	21	49	35
18	55	34	21	—	23	—	25	—	27	—	28	—	30	21	48	34
20	53	32	20	—	23	—	24	—	26	—	28	—	30	20	47	32
22	52	31	—	—	23	—	24	—	26	—	28	—	29	20	45	31
24	50	30	—	—	23	—	24	—	26	—	27	—	29	—	44	29
26	49	29	—	—	23	—	24	—	26	—	27	—	29	—	43	28
28	47	28	—	—	22	—	24	—	25	—	27	—	29	—	41	27
30	45	28	—	—	22	—	24	—	25	—	27	—	29	—	40	26
32	43	27	—	—	22	—	24	—	25	—	27	—	29	—	39	25

NOTE:

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

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