Duplex Stainless Steel F61 Bolts
Category: Stainless steel hexagonal bolt
Head type: External hexagonal thread
Tolerance: 6G
Material: F61/S32550/1.4507
Performance level: 8.8
Thread specifications: M6~M100
Head length across sides: 10-120 (mm)
Head thickness: 6.6-60 (mm)
Total length: 30~800(mm)
Similar grades
| UNS | ID | W.Nr |
| S32550 | F61 | 1.4507 |
Chemical composition of duplex stainless steel F61 bolts
| Alloy | % | Ni | Cr | Mo | N | C | Mn | Si | S | P |
| F61 | Min | 4.5 | 24 | 2.9 | 0.10 | – | – | – | – | – |
| Max | 6.5 | 27 | 3.9 | 0.25 | 0.04 | 1.5 | 1.0 | 0.03 | 0.04 |
Duplex stainless steel F61 bolts. Minimum mechanical properties of the alloy at room temperature.
| Status | tensile strength Rm N/mm2 | Yield Strength RP0.2 N/mm2 | Elongation A5% | Brinell hardness HB |
| Solution treatment | 800 | 550 | 15 | ≤310 |
Duplex stainless steel F61 bolt alloy has the following properties:
F61 has strong resistance to ammonia corrosion, high thermal conductivity and low thermal expansion coefficient. The higher chromium, molybdenum and gas content makes it highly resistant to pitting, crevice corrosion and general corrosion.
Application scope of duplex stainless steel F61 bolts Application fields include:
Mainly used in chemical processing, petrochemical and subsea equipment. And it is widely used in chemical, food, pharmaceutical, papermaking, petroleum, atomic energy and other industries, as well as various parts and components of construction, kitchen utensils, tableware, vehicles, and household appliances.
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