Material Properties
Chemical Composition (wt%)
| C ≤0.03 | Cr 18-20 | Ni 11-15 | Mo 3-4 | Mn ≤2.0 | Si ≤1.0 | Fe Balance | 13.
Mechanical Properties
- Tensile Strength: ≥480 MPa | Yield Strength: ≥176 MPa | Elongation: ≥40% 13.
- Hardness: ≤200 HB (Brinell) | Density: 8.0 g/cm³ 13.
Corrosion Resistance
- Superior resistance to chlorides, sulfuric acid, acetic acid, and pitting/crevice corrosion in harsh environments 14.
- Enhanced performance in high-temperature and oxidizing conditions compared to 316L stainless steel 35.
3. Standards and Specifications
317L nuts comply with:
- ASTM A194/A194M: Standard for stainless steel nuts for high-temperature/pressure service.
- DIN 934/936: Metric hex nuts and flange nuts 35.
4. Types of Nuts Produced with 317L
- Hex Nuts (ASTM A194 Grade 8M)
- Flange Nuts (SAE J995 compliant)
- Lock Nuts (e.g., Nylock, all-metal prevailing torque)
- Cap Nuts for aesthetic or protective applications 13.
5. Key Applications
Chemical & Petrochemical
- Reactors, heat exchangers, and piping systems handling sulfuric acid and chlorides 14.
Pharmaceutical
- Sterilization equipment and non-reactive storage containers 35.
Automotive
- Exhaust systems and components exposed to high-temperature gases 35.
Marine
- Coastal infrastructure and equipment resistant to saltwater corrosion 57.
- 317L Stainless Steel Nuts
- UNS S31703 Fasteners
- High-Corrosion Resistance Nuts
- ASTM A194 317L Nuts
Long-Tail Keywords:
- “317L Hex Nuts for Chemical Processing”
- “Marine-Grade 317L Flange Nuts”
- “High-Temperature 317L Lock Nuts”
Suggested Tables
Table 1: Chemical Composition of 317L
| Element | C | Cr | Ni | Mo | Mn | Si | Fe | |
| wt% | ≤0.03 | 18-20 | 11-15 | 3-4 | ≤2.0 | ≤1.0 | Balance | 13. |
Table 2: Mechanical Properties
| Tensile Strength | Yield Strength | Elongation | Hardness | |
| ≥480 MPa | ≥176 MPa | ≥40% | ≤200 HB | 13. |
Conclusion
317L stainless steel nuts offer exceptional corrosion resistance, high-temperature stability, and mechanical strength for demanding industries like chemical processing, automotive, and marine engineering. Their compliance with ASTM and DIN standards ensures reliability in critical applications.
Keywords: 317L nuts, UNS S31703 fasteners, chemical-resistant nuts, marine-grade stainless steel nuts.
“317L stainless steel nuts for harsh environments.” Use internal links to related products (e.g., “317L bolts” or “super austenitic steel washers”) and add alt-text for tables (e.g., “317L nut corrosion resistance comparison”).
