End-Quench Hardenability Bands — 5140 H to 6150 H - METRIC
Tabulations of Band Limits
“J” Distance Millimeters	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
1.5	60	53	64	57	65	59	—	60	—	60	—	60	46	39	65	59
3	59	52	64	56	65	58	65	60	—	60	—	60	44	36	65	58
5	58	50	64	55	64	57	65	59	—	60	—	60	39	28	65	57
7	57	45	63	53	63	54	64	56	—	59	—	60	32	23	64	55
9	55	40	62	52	62	50	64	53	65	57	—	59	30	20	63	53
11	53	35	61	49	60	43	63	48	64	32	—	58	28	—	63	50
13	50	32	60	44	58	37	61	40	64	46	—	55	27	—	61	46
15	47	30	60	39	57	35	60	37	62	40	—	51	25	—	60	42
20	42	28	58	33	52	31	56	34	58	36	65	40	24	—	58	37
25	39	25	57	31	47	29	50	32	53	34	63	37	23	—	53	35
30	36	23	55	29	44	28	46	30	49	32	61	35	22	—	50	33
35	35	21	53	27	42	27	44	29	46	30	57	32	21	—	47	31
40	34	—	52	25	40	26	43	28	44	28	54	30	20	—	45	29
45	33	—	50	23	39	24	42	27	42	27	51	28	—	—	44	27
50	32	—	49	21	38	22	41	25	41	27	47	25	—	—	43	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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