End-Quench Hardenability Bands — 1335 H to 4037 H - METRIC
Tabulations of Band Limits
“J” Distance Millimeters	GRADE
	1335 H		1340 H		1345 H		3310 H*		3316 H*		4028 H		4032 H		4037 H
	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min
1.5	58	51	60	53	63	56	—	—	—	—	52	45	57	50	59	52
3	58	49	60	52	63	56	—	—	—	—	51	41	55	46	57	50
5	57	46	59	50	63	54	—	—	—	—	45	32	51	34	54	42
7	55	42	58	48	62	52	—	—	—	—	40	23	44	27	49	32
9	53	36	57	42	61	46	—	—	—	—	32	20	36	24	41	27
11	50	31	56	36	60	38	—	—	—	—	29	—	32	22	35	24
13	47	28	54	32	59	35	—	—	—	—	26	—	29	20	32	21
15	45	27	52	30	58	31	—	—	—	—	25	—	27	—	30	20
20	41	23	47	26	55	29	—	—	—	—	23	—	24	—	27	—
25	37	21	41	24	51	27	—	—	—	—	22	—	23	—	26	—
30	35	—	39	23	48	26	—	—	—	—	21	—	23	—	25	—
35	33	—	37	22	47	25	—	—	—	—	—	—	22	—	25	—
40	32	—	36	21	46	24	—	—	—	—	—	—	21	—	25	—
45	31	—	35	20	45	24	—	—	—	—	—	—	20	—	24	—
50	30	—	34	20	45	24	—	—	—	—	—	—	—	—	23	—

NOTE:

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

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