ASTM A182 F310 Stainless Steel WNRF Flange ASME B16.5 Forged Steel Flange

ASME B16.5 ASTM A182 F310 Stainless Steel Weld Neck RF Flange for Industries
 
 
Welding Neck flanges have a long tapered hub, used in high-pressure systems. Good for reducing stress. RF is Raised Face, which is the sealing face. The raised face helps with gasket seating. ASME B16.5 for dimensions, pressure-temperature ratings. Also, B16.47 for larger flanges. Stainless Steel 310 (SS 310) is a high-alloy austenitic stainless steel containing 24–26% chromium and 19–22% nickel, renowned for its exceptional oxidation resistance, superior high-temperature strength (up to 2100°F/1150°C), and durability in harsh environments.

 
ASTM A182 F310/310S/310H Flange Equivalent Grade

 
 
ASTM A182 F310/310S/310H Flange Chemical Composition

 
 
ASTM A182 SS 310 Flanges Mechanical Properties

Manufacturing process:

Forged, then machined. Heat treatment – solution annealing for F310 to maintain corrosion resistance. Surface finish on the Raised Face, maybe 125-250 µin for serrated finish.

Comparative Perspective

• VS. F304/F316:

  • Superior high-temperature strength but less versatile in corrosive chemical environments.

• VS. F321/F347:

  • No titanium/niobium stabilization, making F310 less prone to sensitization but unsuitable for intermittent high-low temp cycling.

• VS. Alloy 800H/HT:

  • Lower cost alternative for oxidation resistance but lacks the same creep strength.

Applications

• High-temperature systems (furnaces, boilers, heat exchangers).

• Petrochemical, oil/gas, and power generation industries.

• Environments with cyclic thermal stresses.