Singapore legislation
Regulation 95
Regulation 95
Tensile and bending tests
Subregulation 1
The transverse tensile strength of the material shall not exceed 36 tons per square inch and be such that the factor of safety of the completed air bottle is not less than 4. The elongation, measured on a length of 8 inches, or 5 inches, shall not be less than 18% or 21% respectively.
Subregulation 2
The bending test-piece shall withstand, without fracture, being bent 180° over an internal radius of 1½ times the thickness of the test-piece.