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Average Shear Strength of Materials- printable PDF

Chart Multipler - For punching materials with a different shear strength than 60,000 psi, it is necessary to use a multipler for calculating the hole punching tonnage requirements. These are average values only. Actual shear strength can be higher depending on the actual tensile and yield strengths of the material used. Average shear strength when punching metal material is calculated in pounds per square inch- (PSI)

For example - when punching stainless steel 304 : a 3/4" hole through 1/2" material.

1.4 multiplyer x 29.5 tons to punch a round hole in mild steel = 41.3 tons - approximate

Material

Shear Strength (PSI)

Chart Multiplier

Aluminum

1100-0

9,500

.19

1100-H14

11,000

.22

3003-H14

14,000

.28

2024-T4

44,000

.88

5005-H18

19,000

.38

6063-T5

18,000

.36

6061-T4

24,000

.48

6061-T6

29,000

.58

7075-T6

54,000

1.08

Brass

Rolled Sheet (Soft)

42,000

.84

1/2 Hard

56,000

1.12

Hard

68,000

1.36

Copper

1/4 Hard

29,000

.58

Hard

43,000

.86

Steel

Mild Steel

50,000

1.00

Boiler Plate

55,000

1.10

Cold Drawn

60,000

1.20

40-50 Carbon

74,000

1.48

Structural A-36

60,000

1.20

Structural EX-TEN

(ASTM-A572) Grade 42

50,000

1.00

Grade 45

50,000

1.00

Grade 50

55,000

1.10

Grade 55

60,000

1.20

Grade 60

65,000

1.30

Grade 65

70,000

1.40

Structural COR-TEN

(ASTM-A242)

60,000

1.20

Cold Rolled C-1018

60,000

1.20

Hot Rolled C-1050

125,000

2.50

Hot Rolled C-1095

125,000

2.50

Hot Rolled C-1095 Annealed

90,000

1.80

Stainless 302 Annealed

70,000

1.40

Stainless 304 Cold Rolled

70,000

1.40

Stainless 316 Cold Rolled

70,000

1.40

Steel, Abrasion Resisting

110,000

2.20

ASTM A656 Grade 80

85,000

1.70

Average Shear Strength of Materials- printable PDF