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steel grade: AISI 630 / SUS 630
AISI 630 / SUS 630 is a martensitic precipitation hardening, chromium, nickel, copper stainless steel.
The steel can be hardened by a single ageing treatment at relatively low temperatures, this minimises any risk of distortion.
630 is an ideal selection when high strength and corrosion is required.
AISI 630 / SUS 630 Composition in % :
| C % | Si % | Mn % | Cr % | Ni % | Cu % | Nb % |
| 0.07 max | 1.00 max | 1.00 max | 15.00-17.00 | 3.00-5.00 | 3.00-5.00 |
0.15-0.45 |
AISI 630 / SUS 630 Mechanical properties
Mechanical properties can be optimized with heat treatment. Very high yield strength up to 1100-1300 MPa (160-190 ksi) can be achieved.
| Condition | A | H900 | H925 | H1025 | H1075 | H1100 | H1150 |
| Tensile Strength N/mm² | 1034 | 1380 | 1310 | 1170 | 1140 | 1035 | 1000 |
| 0.2% YS N/mm² | 650 | 1275 | 1200 | 1140 | 1035 | 930 | 860 |
| Reduction of Area % | 30-60 | 50 | 54 | 56 | 58 | 58 | 60 |
| Elongation % | 6-15 | 14 | 14 | 15 | 16 | 17 | 19 |
Note: the datasheet is just for reference
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