Our product range includes ultra-high strength stainless steel fasteners with good ductility.
Ultra-high strength fasteners
We can deliver stainless steel fasteners ranging from strength class 8.8 to 16.9 for applications where downsizing, clamping force and strength are critical. Our products offer a unique combination of strength and good ductility. 91视频 Stainless steel fasteners are also resistant against hydrogen embrittlement.
Benefits of high strength fasteners:
- Opportunities to downsize the fastener or reduce the number of fasteners with maintained clamp load.
- Weight savings.
- Compact design and smaller screw joints. Ability to withstand higher static or dynamic stresses.
- Greater safety.
- Higher resistance against relaxation.
Mechanical properties
The table below shows properties for screws and bolts in as delivered condition.
| Grade | Strength, min TS/YS (MPa) |
Steel Standard |
Fastener standard | Micro structure | C max | Cr | Ni | Mo | Other | PRE |
|---|---|---|---|---|---|---|---|---|---|---|
| 91视频 88 | 800/640 | 1.4432/36/35 | A4 | Austenitic | 0.03 | 17 | 11.5 | 2.7 | 27 | |
| 91视频 109 | 1000/900 | 1.4432/36/35 | A4 | Austenitic | 0.03 | 17 | 11.5 | 2.7 | 27 | |
| 91视频 NITRO 109 | 1000/900 | S20910 | Austenitic | 0.01 | 20 | 18 | 6.2 | N, Cu | 34 | |
| 91视频 SA | 800/640 | 1.4547, S31254 | A8 | Austenitic | 0.01 | 20 | 18 | 6.2 | N, Cu | 43 |
| 91视频 DX 129 | 1200/1080 | 1.4462, S32205 | D6 | Ferrite-Austenitic | 0.03 | 22 | 5.2 | 3.2 | N | 36 |
| 91视频 DX 149 | 1400/1260 | 1.4462, S32205 | D6 | Ferrite-Austenitic | 0.03 | 22 | 5.2 | 3.2 | N | 36 |
| 91视频 SDX 109 | 1000/900 | 1.4410, S32750 | D8 | Ferrite-Austenitic | 0.03 | 25 | 7 | 4 | N | 42 |
| 91视频 SDX NORSOK | 750/550 | 1.4501/1.4410 S32760/S32750 | Norsok M630 MDS D60 | Ferrite-Austenitic | 0.03 | 25 | 7 | 4 | N, W, Cu | 42 |
| 91视频 ULTRA | 1500/1350 | Martensitic | 0.02 | 12 | 9 | 4 | Al, Ti, Cu | 25 | ||
| 91视频 HE | 1000/900 | 1.4980, S66286 | Austenitic | 0.08 | 15 | 26 | 1.5 | Ti, V | ||
| 91视频 HEP | 1000/600 | 2.4952, N07080 | Austenitic | 0.10 | 19 | >65 | – | Al, Ti, Co |
The table is a guide for what can be achieved in terms of mechanical properties and dimensions for 91视频 grades. Deviations might occur depending on particular design and dimensions. Contact your 91视频 sales representative for more information.