S32750 (1.4410) Super Duplex Stainless Steel
UNS S32750 is a duplex stainless steel especially designed for service in aggressive chloride-containing environments. It has very good resistance to localized corrosion and stress corrosion cracking in combination with high mechanical strength. It is widely used in oil & gas, hydropower, pressure vessels, pulp & paper, structural components and chemical tankers.
Super Duplex stainless steel, relative to other stainless steel products, gives:
• High corrosion resistance
• High resistance to stress corrosion cracking
• High yield strength and tensile strength
UNS S32750 Chemical Composition (% max or range).
| C | Mn | P | S | Si | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|
| 0.03 | 1.20 | 0.035 | 0.02 | 0.80 | 24.0 – 26.0 | 6.0 – 8.0 | 3.0 – 5.0 | 0.24 – 0.32 |
UNS S32750 Mechanical properties
| Tensile | Yield | Elongation | Hardness |
|---|---|---|---|
| MPa min | MPa min | % min | Brinell max |
| 795 | 550 | 15.25% | 310 |
UNS S32750 Grade Bolts Equivalent Material
| STANDARD | ASTM | ASME | UNS | WERKSTOFF NR. |
| Super Duplex 2507 | A276/ A479 | SA 276/ SA 479 | S32750 | 1.4410 |
Heat Treatment
Solution annealing at 1100°C followed by water quenching
1.4410 Uns S32750 STUD BOLT Specification
Material: 1.4410 Uns S32750 F53 SUPER Duplex 2507
Bolt and Nut Standards
ISO 4014, ISO 4017, ISO 4033, ISO 261
DIN 938, DIN 939, DIN 940, DIN 975, DIN 976, DIN 2510, DIN 931, DIN 933, DIN 126, DIN 732, DIN 934
ASME B18.2.1 ASME B18.2.3.5M, ASME B18.2.6M, ASME B18.31.2M, ASME B18.22.1, ASME B18.2.2, ASME B18.2.4.1M, ASME B18.2.4.2M, ASME B18.2.4.6M
ANSI B18.2.1, ANSI B18.2.3.5M, ANSI B18.2.6M, ANSI B18.31.2M, ANSI B18.22.1, ANSI B18.2.2, ANSI B18.2.4.1M, ANSI B18.2.4.2M, ANSI B18.2.4.6M
Bolt and Nut Sizes
M12 to M100
1/2“ to 4”
**Bolt Length ：**40 – 3000 mm, customized length
Fastener Surface coatings
PTFE coated, TEFLON coated, XYLAN coated
Colors: blue, green, red,