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

Chemical Composition limits for the cast analysis of corrosion resisting, heat resisting and high alloy steel castings.

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
Chemical Composition Hardness 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 – 3.4 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 0.15 500 450
2D 2.8 – 3.2 1.5 – 2.2 0.2 – 0.8 4.0 – 6.0 8.0 – 10.0 0.5 max 0.15 550 500
2E 3.2 – 3.6 1.5 – 2.2 0.2 – 0.8 4.0 – 6.0 8.0 – 10.0 0.5 max 0.15 600 550
 
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