Abrasion-Resistant White Irons ASTM

Class	Type	Designation	Carbon	Manganase	Silicon	Nickel	Chromium	Molybdenum	Copper	Phosphorus	Sulfur
I	A	Ni-Cr-HC	3.0 to 3.6	1.3 max	0.8 max	3.3 to 5.0	1.4 to 4.0	1.0 max		0.30 max	0.15 max
I	B	Ni-Cr-LC	2.5 to 3.0	1.3 max	0.8 max	3.3 to 5.0	1.4 to 4.0	1.0 max		0.30 max	0.15 max
I	C	Ni-Cr-GB	2.9 to 3.7	1.3 max	0.8 max	2.7 to 5.0	1.1 to 1.5	1.0 max		0.30 max	0.15 max
I	D	Ni-Hi-Cr	2.5 to 3.6	1.3 max	1.0 to 2.2	4.5 to 7.0	7.0 to 11.0	1.0 max		0.10 max	0.15 max
II	A	12% Cr	2.4 to 2.8	0.5 – 1.5	1.0 max	0.5 max	11.0 to 14.0	0.5 – 1.0	1.2 max	0.10 max	0.06 max
II	B	15% Cr-Mo-LC	2.4 to 2.8	0.5 – 1.5	1.0 max	0.5 max	14.0 to 18.0	1.0 – 3.0	1.2 max	0.10 max	0.06 max
II	C	15% Cr-Mo-HC	2.8 to 3.6	0.5 – 1.5	1.0 max	0.5 max	14.0 to 18.0	2.3 – 3.5	1.2 max	0.10 max	0.06 max
II	D	20% Cr-Mo-LC	2.0 to 2.6	0.5 – 1.5	1.0 max	1.5 max	18.0 to 23.0	1.5 max	1.2 max	0.10 max	0.06 max
II	E	20% Cr-Mo-HC	2.6 to 3.2	0.5 – 1.5	1.0 max	1.5 max	18.0 to 23.0	1.0 – 2.0	1.2 max	0.10 max	0.06 max
III	A	25% Cr	2.3 to 3.0	0.5 – 1.5	1.0 max	1.5 max	23.0 to 28.0	1.5 max	1.2 max	0.30 max	0.15 max