Key characteristics include:

1. ‌Chemical Composition‌:

• ‌Chromium (19.5-20.5%)‌ and ‌Nickel (17.5-18.5%)‌ provide robust resistance to oxidation and acidic media‌13.
• ‌Molybdenum (6.0-6.5%)‌ and ‌Nitrogen (0.18-0.22%)‌ enhance resistance to pitting and crevice corrosion in chloride-rich environments‌13.
• ‌Copper (0.5-1.0%)‌ improves resistance to sulfuric acid‌34.
  2. ‌Mechanical Properties‌:
• ‌Tensile Strength‌: ≥650 MPa‌38.
• ‌Yield Strength‌: ≥310 MPa‌38.
• ‌Elongation‌: ≥40%, ensuring ductility under stress‌36.
  3. ‌Corrosion Resistance‌:
• Superior performance in seawater, chlorides, sulfuric acid, and phosphoric acid‌13.
• Resists stress corrosion cracking (SCC) up to 200°C‌67.

‌Standards for S31254 Nuts‌

S31254 nuts comply with international standards for quality assurance:

• ‌ASTM‌: ASTM A240/A240M (plate/bar)‌68.
• ‌EN/DIN‌: EN 1.4547 / DIN 1.4547‌36.
• ‌ISO‌: ISO 3506 (corrosion-resistant fasteners)‌67.
• ‌UNS Designation‌: UNS S31254‌35.

‌Types of Nuts Produced with S31254‌

The alloy’s versatility supports manufacturing of:

1. ‌Hex Nuts‌: ISO-compliant designs for general industrial use‌36.
2. ‌Lock Nuts‌: Vibration-resistant designs for marine and offshore applications‌58.
3. ‌Flange Nuts‌: Used in high-pressure pipelines and chemical reactors‌57.
4. ‌Heavy Hex Nuts‌: For structural applications requiring high load capacity‌68.

‌Key Applications‌

S31254 nuts are critical in industries requiring corrosion resistance and durability:

1. ‌Oil & Gas‌: Subsea pipelines, wellhead equipment, and sour gas processing systems‌45.
2. ‌Marine Engineering‌: Offshore platforms, desalination plants, and seawater-cooled heat exchangers‌15.
3. ‌Chemical Processing‌: Reactors, heat exchangers, and acid storage tanks‌34.
4. ‌Power Generation‌: Nuclear reactor cooling systems and flue gas desulfurization units‌58.

‌Incorporate these keywords to boost search visibility:

• S31254 nuts
• Super austenitic stainless steel nuts
• Marine-grade corrosion-resistant nuts
• ASTM A240 S31254 hex nuts
• UNS S31254 flange nuts
• DIN 1.4547 lock nuts
• High-strength nuts for oil & gas
• ISO 3506 compliant fasteners

‌Suggested Visuals for Enhanced Engagement‌

1. ‌Corrosion Rate Comparison Chart‌: Compare S31254 with 316L stainless steel in seawater and sulfuric acid‌13.
2. ‌Temperature vs. Strength Curve‌: Illustrate tensile strength retention from 20°C to 200°C‌38.
3. ‌Industry Application Distribution‌: Highlight usage in oil & gas (40%), marine (30%), chemical (20%), and energy (10%) sectors‌45.

‌Why Choose S31254 Nuts?‌

S31254’s unique alloy composition delivers unmatched performance in aggressive environments. Its compliance with ASTM, EN, and ISO standards ensures reliability for critical applications‌36.

‌Conclusion‌
S31254 nuts are indispensable in industries demanding extreme corrosion resistance and mechanical integrity.

‌Note‌: For custom specifications, use terms like “UNS S31254 heavy hex nuts” or “DIN 1.4547 custom fasteners” to capture niche queries.