The value of tensile strength depends on the point at which metal fractures. By definition, true tensile strength is determined by applied load divided by cross-sectional area of the part at the time of tear. However, the ultimate tensile strength, specified by testing laboratories, is based on the initial cross-sectional area.

As hardness of the formed metal increases, yield strength and tensile strength both rise. To minimize cracks in clinches of semi-tubular rivets, we use cold heading wire on the softer side of scale (Steel: 50,000 - 60,000 PSI).

To coincide with our specifications, manufacturers of cold heading wire certify tensile strength usually in range between:
Steel: 50,000 - 75,000 PSI
Stainless Steel: 75,000 - 85,000 PSI
Brass: 55,000 - 65,000 PSI
Aluminum: 40,000 - 50,000 PSI

Compare wire sizes here, which we usually keep on stock.

Torque requirements vary considerably, depending on rivet user. For example; a common torque is 4 to 11 inch pounds for series 23 rivets, but may be required as high as 20 inch pounds or more for the same rivet. The highest torque for OEM friction materials may require rivets with partially tapered shanks, like our popular series 2 rivets. Keep in mind that the torque strength is influenced greatly by riveting equipment and its tooling condition.

Refer to Machinery's Handbook Guide 23rd - 25th Edition by
Industrial Press Inc. 200 Madison Avenue, New York, New York 10016-4078
for extensive help on:
Rivets and Riveted Joints, and Shearing Strength Analysis.
Note that there is rivet characterized by shearing strength there.

Joint, tensile, fatigue, and torque strength is dealt with in
SMALL RIVETS, Machine Design - Fastening and Joining Issue,
prepared by Technical Commitee of the Tubular and Split Rivet Council
331 Madison Ave., New York, New York 10017.
Contact us for reprint.

Interpolate values from the following table specifying approximate
Shear Load Limits for semi-tubular rivets: