Gears, bolts and valve components. Plastic moulding dies. High strength pump shafts and boat propeller shafts. Engine components. In general applications where some level of corrosion resistance is needed in conjunction with high strength or hardness.
The 630 steels plates stainless material is usually supplied solution annealed. 630 steels plates stainless can be heat treated to a range of combinations of strength & ductility.
Castings
630 steels plates stainless can be cast readily by most processes. The cast equivalent to 630 steels plates stainless is CB-7Cu-1, as specified in ASTM A747. The properties are slightly inferior to those of wrought material.
Chemical Composition
Grade | C | Mn | Si | P | S | Cr | Ni | Cu | Nb+Ta | |
630 | min. max | - 0.07 | - 1 | - 1 | - 0.04 | - 0.030 | 15 17.5 | 3 5 | 3 5 | 0.15 0.45 |
This steel is usually supplied in the solution treated condition, in which it can be machined. Machinability is similar to Grade 304.
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