ASTM A182 F316Ti / UNS S31635 Stainless Steel Slip On Flange B16.5 SORF Flange
ASTM A182 F316Ti / UNS S31635 Slip On Stainless Steel Flanges Forged SORF Flange
ASTM A182 F316Ti stainless steel Flange. Titanium combines preferentially with Carbon (C) to form Titanium Carbides (TiC), preventing Chromium Carbide (Cr23C6) formation at grain boundaries during exposure to high temperatures (especially in the 425-860°C / 800-1580°F range), such as during welding or service. This prevents Sensitization and subsequent Intergranular Corrosion (IGC).
Key Properties of Using SS316Ti:
- Excellent Corrosion Resistance: Similar to Type 316L in most environments (general corrosion, pitting/crevice in mild chlorides due to Mo). Superior to 316/316L in environments causing IGC after welding or high-temp exposure.
- High Temperature Stability: Good strength and oxidation resistance up to ~870°C (1600°F). Titanium stabilization maintains corrosion resistance after high-temp exposure.
- Good Fabricability/Weldability: Similar to 316/316L. Stabilization minimizes post-weld IGC risk, often eliminating need for post-weld heat treatment for thin sections.
- Non-Magnetic: Austenitic structure.
Equivalent Grades of ASTM A182 F316Ti Stainless Steel SORF Flange
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| SS 316Ti | 1.4571 | S31635 | SUS 316Ti | 320S31 | 08Ch17N13M2T | Z6CNDT17‐123 | X6CrNiMoTi17-12-2 |
Chemical Composition of ASTM A182 F316TiStainless Steel SORF Flange
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| A182 F316Ti | 0.08max | 2max | 0.75max | 0.045max | 0.03max | 16-18 | 2-3 | 10-14 | 0.1Max |
Mechanical Properties of ASTM A182 F316Ti Stainless Steel SORF Flange
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1399 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
| Type of ASTM A182 F316Ti Flanges | Size | |
| A182 F316Ti Slip-On Flanges | A182 F316Ti Threaded Flanges | 1/2″ – 48″Raised Face or Flat Face,RTJ |
| A182 F316Ti Weld Neck Flanges | A182 F316Ti Socket Weld Flanges | |
| A182 F316Ti Blind Flanges | A182 F316Ti Reducing Flanges | |
| A182 F316Ti Lap Joint Flanges | A182 F316Ti Plate Flanges | |
Applications
Used in piping systems requiring corrosion resistance and stability after welding/high-temp exposure:
- Chemical & Petrochemical Processing
- Oil & Gas Refining (moderate sour service)
- Pharmaceutical & Food Processing
- Power Generation (especially heat recovery systems)
- Marine Environments
- Heat Exchangers & Boilers
- Systems handling acids, solvents, chlorides, or steam.
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