630 stainless steel is precipitation, quenching water, martensitic stainless steel, and this grade has high strength, hardness and corrosion resistance and other characteristics. After 630 stainless steel heat treatment, the mechanical properties of the product more perfect, can reach up to 1100-1300 mpa (160-190 ksi) of the compressive strength.
| Cr | 15,0 - 17,0 |
| Ni | 3,0-5,0 |
| Cu | 3,0-5,0 |
| C | max 0,070 |
This grade 630 stainless steel can not be used at temperatures above 300 ° C (570 ° F) or at very low temperatures. It has good resistance to atmospheric and dilute acids or salts and has the same corrosion resistance as 304 and 430.
US grades : ASTMS17400, AISI630, UNS630
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