Ductile Iron tension grade 120-90-02

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Ductile Iron tension grade 120-90-02
Categories:	Metal; Ferrous Metal; Cast Iron; Alloy Cast Iron; Ductile Iron
Material Notes:	Carbon represents the total carbon in the listed composition. Cerium is an optional constituent in ductile iron. Most ductile irons are specified based on mechanical properties and have loosely defined compositions. For example, 120-90-02 ductile iron is specified to have a minimum tensile strength of 120 ksi (827 MPa), a yield strength of 90 ksi (621 MPa) and an elongation of 2%. Determined for a single temperature of ductile iron, heat treated to approximate various standard grades. Properties were obtained using test bars machined from 25 mm keel blocks.
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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	331	331
Hardness, Knoop	370	370	Converted from Brinell
Hardness, Rockwell C	33.3	33.3	Converted from Brinell
Hardness, Vickers	352	352	Approximated. Converted from Brinell hardness.
Tensile Strength, Ultimate	974 MPa	141000 psi
Tensile Strength, Yield	864 MPa @Strain 0.2 %	125000 psi @Strain 0.2 %
Elongation at Break	1.5 %	1.5 %	In 50 mm.
Modulus of Elasticity	164 GPa	23800 ksi
Poissons Ratio	0.28	0.28
Shear Modulus	64.0 GPa	9280 ksi	calculated

Component Elements Properties	Metric	English	Comments
Carbon, C	3.6 - 3.8 %	3.6 - 3.8 %
Cerium, Ce	0.0050 - 0.20 %	0.0050 - 0.20 %
Chromium, Cr	0.030 - 0.070 %	0.030 - 0.070 %
Copper, Cu	0.15 - 1.0 %	0.15 - 1.0 %
Iron, Fe	90.738 - 94.175 %	90.738 - 94.175 %
Magnesium, Mg	0.030 - 0.060 %	0.030 - 0.060 %
Manganese, Mn	0.15 - 1.0 %	0.15 - 1.0 %
Molybdenum, Mo	0.010 - 0.10 %	0.010 - 0.10 %
Nickel, Ni	0.050 - 0.20 %	0.050 - 0.20 %
Phosphorus, P	<= 0.030 %	<= 0.030 %
Silicon, Si	1.8 - 2.8 %	1.8 - 2.8 %
Sulfur, S	<= 0.0020 %	<= 0.0020 %

References for this datasheet.

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MDFE18 / 12015

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