PUNCH TONNAGE CHART

Tonnage requirement for other than mild steel

(50,000 Pound Shear Strength)

TONNAGE REQUIRED TO PUNCH ROUND HOLES IN MILD STEEL
Round Hole Diameter	METAL THICKNESS
	1/8"	1/4"	3/8"	1/2"	5/8"	3/4"	7/8"	1"	1-1/8"	1-1/4"	1-3/8"	1-1/2"	1-5/8"	1-3/4"
1/8"	1	-	-	-	-	-	-	-	-	-	-	-	-	-
1/4"	3	5	-	-	-	-	-	-	-	-	-	-	-	-
3/8"	4	8	11	-	-	-	-	-	-	-	-	-	-	-
1/2"	5	10	15	20	25	-	-	-	-	-	-	-	-	-
5/8"	6	13	19	25	31	38	-	-	-	-	-	-	-	-
3/4"	8	15	23	30	38	45	53	-	-	-	-	-	-	-
7/8"	9	18	26	35	44	53	61	70	79	-	-	-	-	-
1"	10	20	30	40	50	60	70	80	90	100	-	-	-	-
1-1/8"	11	23	33	45	56	68	78	90	101	112	123	-	-	-
1-1/4"	13	25	38	50	63	75	88	100	113	126	138	150	-	-
1-3/8"	14	28	41	55	69	83	96	110	124	138	152	165	179	-
1-1/2"	15	30	45	60	75	90	105	120	135	150	165	180	195	210
1-5/8"	16	33	49	65	81	98	114	130	147	163	179	195	211	227
1-3/4"	18	35	52	70	87	105	122	140	158	175	193	210	229	245
2"	20	40	60	70	100	120	140	160	180	200	220	240	260	280
2-1/4"	23	45	67	90	112	135	157	180	203	225	248	270	293	315
2-1/2"	25	50	75	100	125	150	175	200	225	250	275	300	325	350
2-3/4"	28	55	82	110	132	165	187	220	248	275	303	330	358	385
3"	30	60	90	120	150	180	210	240	270	300	330	360	390	410
3-1/4"	33	65	97	130	162	195	227	260	293	325	358	390	423	455
3-1/2"	35	70	105	140	180	210	245	280	315	350	385	420	455	490
3-3/4"	38	75	112	150	187	225	262	300	338	375	413	450	488	525
4"	40	80	120	160	200	240	280	320	360	400	440	480	520	560