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High Chrome Casting Send Enquiry

These irons produce a more continuous structure of iron-chromium carbides.

After heat treatment these irons have a hardness range of 600-650 BHN

All the white irons are difficult to machine, however advances in ceramic machining tips have vastly improved the prospects.

They are nearly impossible to drill and tap and hace steel inserts cast into the casting to allow drilling and tapping to take place.

Grade
Carbon %
Silicon %
Manganese %
Moly.%
Nickel %
Chrome %
Copper %
3A
1.8 to 3.0
1.0 Max
0.5 to 1.50
2.5 Mx
2.0 Max
14 to 17
2.0 Max
3B
3.0 to 3.6
1.0 Max 0.5 to 1.5 3.0 Max
2.0 Max 14 to 17
2.0 Max
3C
1.8 to 3.0
1.0 Max 0.5 to 1.5 3.0 Max
2.0 Max 17 to 22
2.0 Max
3D
2.0 to 2.8
1.0 Max 0.5 to 1.5 1.5 Max
2.0 Max 22 to 28
2.0 Max
3E
2.8 to 3.5
1.0 Max 0.5 to 1.5 1.5 Max
2.0 Max 22 to 28
2.0 Max
3F
2.0 to 2.7
1.0 Max 0.5 to 1.5 2.5 Max
2.0 Max 11 to 13
2.0 Max
3G
2.7 to 3.4
1.0 Max 0.5 to 1.5 3.0 Max
2.0 Max 11 to 13
2.0 Max

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