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65-45-12 Ductile Iron 80-55-06 Ductile Iron
Class 40 Gray Iron

The Iron Alloys


Atlas Bronze carries Dura bar's Continuous Cast Iron Products in number of shapes and sizes.  We carry G2 Gray Iron (Class 40) and Ductile Iron's 65-45-12 and 80-55-06.


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G2 Gray Iron

G2 is a pearlitic gray iron containing Type A graphite. Gray Iron bars made to this specification have optimal strength, wear and hardness when compared to the other gray iron grades. This material is well suited for applications requiring high resistance to wear and response to heat treatment. This specification is similar to ASTM A48 class 40.


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65-45-12 Ductile Iron

65-45-12 ductile iron contains nodular graphite in a matrix of ferrite with small amounts of pearlite. The ferritic structure gives excellent machinability with good surface finishes along with optimal impact strengths, fatigue properties, electrical conductivity and high magnetic permeability. This iron has approximately the same tensile and yield strengths as AISI 1020 steel in the as-rolled condition. This specification conforms to ASTM A536 grade 65-45-12.


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80-55-06 Ductile Iron


80-55-06 ductile iron will contain nodular graphite in a matrix of ferrite and pearlite. The pearlite/ferrite structure provides higher wear resistance and strength when compared to a ferrite grade of ductile iron. This material is readily machinable with good surface finishes. Tensile and yield strengths are similar to AISI1040 steel in the as-rolled condition. This specification is similar to ASTM A536 grade 80-55-06.


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