Tensile strength Rm, definitions of mechanical properties for screws | Bossard Sweden

Choose your country or region


South Africa

EN

Canada

FR EN

México

ES EN

United States

EN

Australia

EN

China / 中国

ZH EN

India

EN

South Korea / 대한민국

KO EN

Malaysia

EN

Singapore

EN

Taiwan

ZH EN

Thailand

EN

Česká Republika

CS EN

Danmark

DA EN

Deutschland

DE EN

España

ES EN

France

FR EN

Ireland

EN

Österreich

DE EN

Polska

PL EN

Schweiz / Suisse / Svizzera

DE FR IT EN

Sweden

EN SV

Global

EN

Please start typing to get suggestions.

Suggestions are being loaded.

Search suggestions

Product categories

Product suggestions

Tensile strength Rm [N/mm2]

Determines how much axial load a screw must withstand without breaking. If full size screws are tested, the yield strength can only be approximately established. Under ISO 898 Part 1, the exact yield strength and elongation after fracture can be determined using machined specimens. Exceptions are stainless steel screws A1 to A4 (ISO 3506).

Tensile strength Rm

 

Tensile strength at rupture in thread:

Rmmax. tensile force F/stress area        [N/mm2]

 

Tensile strength at rupture in cylindrical shank:

Rmmax. tensile force F/ initial cross section of specimen        [N/mm2]

 

 [N/mm2] = 1 MPa = 145.03 psi