Impax® Tooling Solutions Catalog - WILSON TOOL - (Version JPG) - Page n° 39 - PDF Catalogue | Technical Documentation

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TONNAGE CALCULATION

Tonnage (U.S.) = Total Perimeter Inches (P) x Material Thickness (T) x 25 x Material Multiplication Factor (F) x Shear Factor (S). Tonnes (Metric) = Total Perimeter Distance (P) x Material Thickness (T) x .0352 x Material Multiplication Factor (F) x Shear Factor (S).

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ATERIAL MULTIPLICATIO FACTOR (F)

TERIAL THICKNESS (T)


NON-FERROUS		GAUGE NO.	STEEL SHEETS
Gauge Decimal (mm)	Gauge Decimal (inches)	GAUGE NO.	Gauge Decimal (inches)	Gauge Decimal (mm)
5.827	.2294	3	.2391	6.073
5.189	.2043	4	.2242	5.695
4.620	.1819	5	.2092	5.314
4.115	.1620	6	.1943	4.935
3.665	.1443	7	.1793	4.554
3.264	.1285	8	.1644	4.176
2.906	.1144	9	.1495	3.797
2.588	.1019	10	.1345	3.416
2.304	.0907	11	.1196	3.030
2.052	.0808	12	.1046	2.657
1.829	.0720	13	.0897	2.278
1.628	.0641	14	.0747	1.897
1.450	.0571	15	.0673	1.709
1.290	.0508	16	.0598	1.519
1.151	.0453	17	.0538	1.367
1.024	.0403	18	.0478	1.214
0.912	.0359	19	.0418	1.062
0.813	.0320	20	.0359	0.912
0.724	.0285	21	.0329	0.836
0.643	.0253	22	.0299	0.759
0.574	.0226	23	.0269	0.683
0.511	.0201	24	.0239	0.607
0.455	.0179	25	.0209	0.531
0.404	.0159	26	.0179	0.455
0.361	.0142	27	.0164	0.417
0.320	.0126	28	.0149	0.378
0.287	.0113	29	.0135	0.343
0.254	.0100	30	.0120	0.305
0.226	.0089	31	.0105	0.267
0.203	.0080	32	.0097	0.246
0.180	.0071	33	.0090	0.229
0.160	.0063	34	.0082	0.208
0.142	.0056	35	.0075	0.191


	MATERIAL DESCRIPTION	MULTIPLIER (F)
	Aluminum - Soft Sheet	.30
	Aluminum - Half Hard	.38
	Aluminum - Hard	.50
	Brass - Soft Sheet	.60
	Brass - Half Hard	.70
	Copper - Rolled	.57
	Steel - Mild	1.00
	Steel - ASTM - A36	1.20
	Steel - 50 Carbon	1.40
	Steel - Cold Drawn	1.20
	Steel - Stainless	1.40
	Spring Steel - (tempered)	4.00

Based on Mild Steel Shear Strength of 50,000 P.S.I. (345 MPa)

SHEAR FACTOR(S)

.062" (1.59mm) CONCAVE SHEAR

.125" (3.18mm)

CONCAVE SHEAR

100% 90% 80% 70% 60% 50% 40% 30% 20%

10% 0%

.250" (6.35mm) CONCAVE SHEAR

.438 (11.1mm) CONCAVE SHEAR

.075 .105 .135 .179 .209 .250 (1.90) (2.66) (3.42) (4.55) (5.31) (6.35)

.312

(7.94)

.375 (9.53)

.438 (11.1)

.500 In. (12.7) (mm)

Shear Tonnage Chart:

To find the actual tonnage required when using a given shear, multiply the calculated tonnage by the percentage shown on the chart for a specified material thickness.


Local	Toll Free U.S.A. & Canada	Toll Free Mexico	Website & Email
Tel: 651-286-6001	Tel: 800-944-4671	Tel: 001-800-741-2510	www.wilsontool.com
Fax: 651-286-5959	Fax: 800-944-4679	Fax: 001-800-544-2096	stamping@wilsontool.com

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Impax® Tooling Solutions Catalog - WILSON TOOL - #39

Punch, Punching die, Tool, Punching tool