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DIN125 DIN127 1.4410 UNS S32750 Duplex2507 plain flat spring washer
1. 2507 full threaded stud bolt material introduction
S32750 is the standard grade of super-duplex stainless steel based on 25% chromium, 7% nickel and significant additions of molybdenum, manganese and nitrogen. As with many of the duplex grades, S32750 also offers high strength and excellent resistance to chloride stress corrosion cracking, while the molybdenum and nitrogen levels enhance the pitting, crevice and general corrosion resistance.
Fe rem, Cr 25.0%, Ni 7.0%, Mo 4.0%, N 0.28%
| Ultimate Tensile Strength (N/mm²) | Proof Stress (N/mm²) | Elongation (%) | Hardness (HB) |
|---|---|---|---|
| 760-800 | 315-550 | 15 | 280 max |
2. The mechanical property between 310 S32550 S32760 S31803
| Alloy Name | BS | UNS | BS EN | Others | Ultimate Tensile Strength N/mm² | Minimum Yield Strength N/mm² | Elongation % | Hardness HB |
| Grade 310 | 310S31; 310S24 | S31000 | ASTM A276 | 510 | 205 | 40 | ||
| S32550 / AMAZON 256 | S32550 | ASTM A240; ASTM A479 | 760 | 550 | 25 | 280 max | ||
| S32760 / SEACOL-760 | S32760 | F55 | 750 | 550 | 25 | 280 max | ||
| S31803 / COLDUPLEX | S31803 | F51 | 620 | 448 | 25 | 280 max | ||
| S32750 | S32750 | F53; SAF2507 | 760-800 | 315-550 | 15 | 280 max | ||
| 17-4PH | S17400 | AISI 630 | ||||||
| S80 | BS 7S 80D | S43100 | 431S29, AMS 5628 | 880-1080 | 690 | 12 | 255-321 | |
| S130 | BS 2S 130D; 347S31 | S34700 | AMS2640, MSRR6522 | 540 | 210 | 35 | 140-220 | |
| Grade 143D | BS 2S 143D | FV520B | 1080 | 930 | 15 | |||
| A-286 (660B) | S66286 | ASTM A453 (GD 660); ASTM A638 (GD 660) | 895 | 585 | 15 | 248 max |
