Chemical Composition Base Element Fe (Iron) Mechanical Properties Yield Strength 79.8 ksi (minimum) Ultimate Tensile Strength 94.3 ksi (minimum) Elongation 2 % strain (minimum) Brinell Hardness 241 to 285 Other Information Material Class Ferrous Alloy Alloy Family Cast Iron and Iron Alloys Alloy Group Cast Iron Alloy Sub-Group Malleable cast iron Country USA Standards Body ASTM (USA) Description Pearlitic malleable iron castings for general engineering at temps from ambient to 400 degrees C; chemical composition as to produce required mech props Designation 550 M2 Specification Type Standard Specification ASTM A220/A220M-99 Specification Year 2004 Specification Status Active Specification Status Notes active 2004 Source Worldwide Guide to Equivalent Irons and Steels, 5th ed. ASM International 2006 Available forms Casting Links Organizations American Society for Testing and Materials (ASTM)
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Chemical Composition

Base Element

Fe (Iron)

Mechanical Properties

Yield Strength

79.8

ksi (minimum)

Ultimate Tensile Strength

94.3

ksi (minimum)

Elongation

% strain (minimum)

Brinell Hardness

241 to 285

Other Information

Material Class

Ferrous Alloy

Alloy Family

Cast Iron and Iron Alloys

Alloy Group

Cast Iron

Alloy Sub-Group

Malleable cast iron

Country

USA

Standards Body

ASTM (USA)

Description

Pearlitic malleable iron castings for general engineering at temps from ambient to 400 degrees C; chemical composition as to produce required mech props