... .1,sI:2.B :0.9 Cr:0.5,Fe:4. Low hardness and toughness, corrosion resistance, dedicated ... C:0.1 Si :3 B :1 Cr:1 Fe: 6Cast iron, steel parts, glass mould repair of ... edgesHRC 35-40 C:0.3 Si:3 Cr:8 Fe:5Hardness modest, applicable to the axis, the punch, ... 50-55 C:0.5 Si:3 Cr:12 Fe 5 Used in general valve, seal face, oil ... 0.9 Si:1 B:3.2 Cr:16 Fe: 5 company profile Nuclear 857 manufactory is a subsidiary ...