ASTM A148 Cast Steel Material Chemical and Tensile Requirement

ASTM A148 cast steel material is high strength steel castings for structural purposes. This specification covers the standard for carbon steel, alloy steel, and martensitic stainless steel castings that are to be subjected to higher mechanical stresses. There are three grades: Grade 80-40, Grade 80-50, and Grade 90-60. All castings shall undergo heat treatment either by full annealing, normalizing, normalizing and tempering, or quenching and tempering and shall be regulated under pyrometers.
ASTM A148 Cast Steel Material Chemical and Tensile Requirements

ASTM			Tensile Requirements
STEEL GRADE	Sulfur	Phosphorus	Tensile Strength	Yield Point	Elongation in 2 in.	Reduction of Area
	Max % / Range		Min. ksi [Mpa] / Range		Min. %
Grade 80-40	0.06	0.05	80 [550]	40 [275]	18	30
Grade 80-50	0.06	0.05	80 [550]	50 [345]	22	35
Grade 90-60	0.06	0.05	90 [620]	60 [415]	20	40