Ductile Iron MIL-I-24137 Class C

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Ductile Iron MIL-I-24137 Class C
Categories:	Metal; Ferrous Metal; Cast Iron; Alloy Cast Iron; Ductile Iron
Material Notes:	Carbon represents the total carbon in the listed composition. Most ductile irons are specified based on mechanical properties and have loosely defined compositions. Austenitic, stress relieved at 650°C, or solution treated at 950°C if necessary to dissolve carbides. Applications include pressure parts, machine components and propellers.
Key Words:	UNS F43021, MIL-I-24137 Class C, austenitic, pressure parts
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Physical Properties	Metric	English	Comments

Density	7.10 - 7.20 g/cc	0.257 - 0.260 lb/in³	Typical value of ductile iron

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	<= 175	<= 175
Hardness, Knoop	194	194	Converted from Brinell
Hardness, Vickers	187	187	Approximated. Converted from Brinell hardness.
Tensile Strength, Ultimate	>= 345 MPa	>= 50000 psi
Tensile Strength, Yield	>= 172 MPa	>= 24900 psi
Elongation at Break	20 %	20 %	In 50 mm.

Component Elements Properties	Metric	English	Comments
Carbon, C	2.7 - 3.1 %	2.7 - 3.1 %
Chromium, Cr	<= 0.50 %	<= 0.50 %
Iron, Fe	68.2 - 73.4 %	68.2 - 73.4 %
Manganese, Mn	1.9 - 2.5 %	1.9 - 2.5 %
Nickel, Ni	20 - 23 %	20 - 23 %
Phosphorus, P	<= 0.15 %	<= 0.15 %
Silicon, Si	2.0 - 3.0 %	2.0 - 3.0 %

References for this datasheet.

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MDFE14 / 12011

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