Multicyl User Manual


**BE SURE TO READ THIS ENTIRE MANUAL PRIOR TO USING ANY MULTICYL PRODUCTS**


Appendix

TONNAGE: ROUND HOLES IN MILD STEEL

Hole

Dia.

20 GA

18  GA

16 GA

14 GA

12 GA

11 GA

10 GA

3/16

.187

1/8"

.35

.47

.59

.74

1.0

1.2

-

-

1/4"

.71

.94

1.2

1.5

2.1

2.4

2.7

3.7

3/8"

1.1

1.4

1.8

2.2

3.1

3.5

4.0

5.5

1/2"

1.4

1.9

2.4

2.9

4.1

4.7

5.3

7.4

5/8"

1.8

2.4

2.9

3.7

5.2

5.9

6.6

9.2

3/4"

2.1

2.8

3.5

4.4

6.2

7.1

8.0

11.1

7/8"

2.5

3.3

4.1

5.2

7.2

8.3

9.3

12.9

1"

2.8

3.8

4.7

5.9

8.3

9.4

10.6

14.8


This chart is for 50,000 PSI tensile strength mild steel, use the following multipliers for other materials:


REDUCED TONNAGE DUE TO PUNCH SHEAR

Shear Depth

Up to   16 GA

14 GA

12 GA

10 GA

3/16

1/16

.50

.60

.75

.80

.87

3/32

.50

.50

.60

.70

.80

3/16

.50

.50

.50

.50

.5


This chart illustrates the effect of shear in punching applications. Multiply the tonnage requirement by the appropriate factor to determine the new tonnage.

Eg: A 3/4 dia hole in 16 ga mild steel requires 4.4 tons. However, if 1/16 shear is put on the punch tip, it would only take 2.2 tons (4.4 x .50). Furthermore, if the material was aluminum instead of mild steel, it would only take 1.32 tons (2.2 x .60).

MULTICYL INC.
640 Hardwick Road, Unit 1, Bolton, Ontario Canada, L7E 5R1
Tel:(905) 951-0670 Fax:(905) 951-0672 US Toll Free 1-800-388-6359
Visit our website: www.multicyl.com, e-mail: punch@multicyl.com



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