Materials & Grades

Ni-Hard - Abrasion Resisting White Irons - BS 4844 1986

Chemical Composition
Hardness HB, Min
Type Of Iron
Grade
C
Si
Mn
Ni
Cr
Mo
Cu % (max)
P % (max)
Section - upto 50mm
Section - Over 50mm
Section - upto 125mm
Section - over 125mm
HB Min
Unalloyed White Iron
1A
2.4 - 3.4
0.5 - 1.5
0.2 - 0.8
-
2.0 max
-
-
0.15
400
350
-
-
-
1B
2.4 - 3.4
0.5 - 1.5
0.2 - 0.8
-
2.0 max
-
-
0.5
400
350
-
-
-
1C
2.4 - 3.0
0.5 - 1.5
0.2 - 0.8
-
2.0 max
-
-
0.15
250
200
-
-
-
 
Ni - Hard
2A
2.7 - 3.2
0.3 - 0.8
0.2 - 0.8
3.0 - 5.5
1.5 - 3.5
0.5 max
-
0.15
-
-
500
450
-
2B
3.2 - 3.6
0.3 - 0.8
0.2 - 0.8
3.0 - 5.5
1.5 - 3.5
0.5 max
-
0.15
-
-
550
500
-
2C
2.4 - 2.8
1.5 - 2.2
0.2 - 0.8
4.0 - 6.0
8.0 - 10.0
0.5 max
-
0.1
-
-
500
450
-
2D
2.8 - 3.2
1.5 - 2.2
0.2 - 0.8
4.0 - 6.0
8.0 - 10.0
0.5 max
-
0.1
-
-
550
500
-
2E
3.2 - 3.6
1.5 - 2.2
0.2 - 0.8
4.0 - 6.0
8.0 - 10.0
0.5 max
-
0.1
-
-
600
550
-
 
High Chromium Grades
3A
1.8 - 3.0
1.0 max
0.5 - 1.5
2.0 max
14 - 17
2.5 max
2
0.1
-
-
-
-
600
3B
3.0 - 3.6
1.0 max
0.5 - 1.5
2.0 max
14 - 17
3.0 max
2
0.1
-
-
-
-
650
3C
1.8 - 3.0
1.0 max
0.5 to 1.5
2.0 max
14 - 17
3.0 max
2
0.1
-
-
-
-
600
3D
2.0 - 2.8
1.0 max
0.5 - 1.5
2.0 max
14 - 17
1.5 max
2
0.1
-
-
-
-
600
3E
2.8 - 3.5
1.0 max
0.5 - 1.5
2.0 max
14 - 17
1.5 max
2
0.1
-
-
-
-
600
3F
2.0 - 2.7
1.0 max
0.5 - 1.5
2.0 max
14 - 17
2.5 max
2
0.1
-
-
-
-
600
3G
2.7 - 3.4
1.0 max
0.5 - 1.5
2.0 max
14 - 17
3.0 max
2
0.1
-
-
-
-
650

 

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