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Grade Comparison

Grade Comparison

Grade	Matrix / Graphite	Tensile Strength (psi)	Yield Strength (psi)	Elongation	Fatigue Strength (psi)
Ductile Irons
65-45-12		65,000	45,000	12	40,000
80-55-06		80,000	55,000	6	40,000
100-70-03		100,000	70,000	2	40,000
65-45-12 HRDS		65,000	45,000	12	n/a
Gray Irons
G2		40,000*	n/a	n/a	20,000
G1		20,000*	n/a	n/a	10,000
G2A		45,000*	n/a	n/a	25,000
G1A		25,000*	n/a	n/a	15,000
Ni-Resist Irons
201 Type 1		25,000	n/a	n/a	n/a

* Gray iron tensile strengths are based on the strength of a cast test bar. For more information click here.

Legend
Flake   Nodular   Ferritic       Pearlitic