ASTM A148 / A148M

This specification covers carbon steel, alloy steel, and martensitic stainless steel castings that are to be subjected to higher mechanical stresses than those covered in Specification A27/A27M. Several grades of steel castings are covered, having the chemical composition and mechanical properties prescribed

Chemical Properties

Grade	Sulfur	Phosphorus, max

Mechanical Properties

Grade	Tensile strength min, ksi [MPa]	Yield point min, ksi [MPa]	Elongation in 2 in. or 50 mm, min, %A	Reduction of Area, min, %

Note A: When ICI test bars are used in tensile testing as provided for in this specification, the gage length to reduced section diameter ratio shall be 4 to 1.