ss 630 plates sheets can be machined in their solution-treated condition. They ss 630 plates sheet have machining rates similar to that of grade 304 steels.
It is magnetic, readily welded, and has good fabricating characteristics, though ss 630 plates sheet will lose some toughness at higher temperatures.
Some of the major applications of grade 630 stainless steels include:
Engine components
High strength and boat propeller shafts
Plastic moulding dies
Valves and gears
| Grade | C | Si | Mn | P | S | Cr | Ni | Cu | Nb |
| 17-4PH | 0.07 | 1.00 | 1.00 | 0.040 | 0.030 | 15.00~17.50 | 3.00~5.00 | 3.00~5.00 | 0.15~0.45 |
17-4PH is a martensitic precipitation-hardening stainless steel that provides an outstanding combination
of high strength, good corrosion resistance, good mechanical properties at temperatures up to 600°F
(316°C).



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