ASTM A182 F310S
ASTM A182 F310S Stainless Steel Flange
Emirerri Steel is a leading supplier of ASTM A182 F310S Stainless Steel Forged Products, including flanges, fittings, and bars.
ASTM A182 F310S is the low-carbon variant of F310, designed to provide superior resistance to intergranular corrosion during high-temperature service. This austenitic stainless steel contains 25% chromium and 20% nickel, delivering excellent oxidation resistance, heat resistance, and mechanical strength at elevated temperatures.
F310S is widely used in furnace components, chemical processing equipment, heat exchangers, and other high-temperature applications where long-term stability and corrosion resistance are critical.
Key Features
Low Carbon Content: Reduces risk of sensitization and intergranular corrosion.
Excellent High-Temperature Strength: Maintains structural integrity up to 1150°C.
Outstanding Oxidation and Scaling Resistance in thermal applications.
Superior Corrosion Resistance in acidic and oxidizing environments.
Good Ductility, Weldability, and Fabrication Properties.
Maintains Toughness at Cryogenic Temperatures.
Type of Flanges
Specification
| Standard | Details |
|---|---|
| Product Standard | ASTM A182 / ASME SA182 |
| Grade | F310S |
| UNS Number | S31008 |
| Material Type | Austenitic Stainless Steel |
| Manufacturing Process | Forged / Rolled / Heat Treated |
| Delivery Condition | Solution Annealed |
| Form | Round Bars, Forged Bars, Flanges, Fittings |
Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| UNS | S31008 |
| EN / DIN | X15CrNi25-20 / 1.4845 |
| BS | 310S24 |
| JIS | SUS 310S |
| AFNOR | Z10CN24-20 |
Available Sizes
| Form | Size Range |
|---|---|
| Round Bar | 10mm to 350mm Diameter |
| Flanges | ½” to 48” (Class 150 – 2500) |
| Forged Fittings | ½” to 4” (Socket Weld / Threaded) |
| Length | 1000mm to 6000mm (Custom Cut Available) |
ASTM A182 F310S Chemical Composition
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.08 max |
| Manganese (Mn) | 2.00 max |
| Silicon (Si) | 1.50 max |
| Chromium (Cr) | 24.00 – 26.00 |
| Nickel (Ni) | 19.00 – 22.00 |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.03 max |
| Nitrogen (N) | 0.10 max |
| Iron (Fe) | Balance |
ASTM A182 F310S Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 515 min |
| Yield Strength (MPa) | 205 min |
| Elongation (%) | 40 min |
| Hardness (Brinell) | 217 max |
| Modulus of Elasticity (GPa) | 200 |
ASTM A182 F310S Physical Properties
| Property | Value |
|---|---|
| Density | 7.9 g/cm³ |
| Melting Point | 1400 – 1455°C |
| Thermal Conductivity (at 100°C) | 14.2 W/m·K |
| Electrical Resistivity (20°C) | 0.78 µΩ·m |
| Coefficient of Expansion (20–100°C) | 15.9 µm/m·°C |
Types of ASTM A182 F310S Products
F310S Forged Round Bars
F310S Flanges (WNRF, SORF, Blind, Lap Joint)
F310S Forged Fittings (Elbow, Tee, Coupling, Union)
F310S Socket Weld Fittings
F310S Threaded Fittings
F310S Pipe Nipples and Outlet Fittings
Custom Machined Components
Corrosion Resistance
ASTM A182 F310S provides excellent resistance to oxidation, sulfidation, and high-temperature corrosion. The low carbon content prevents sensitization, ensuring long-term resistance to intergranular corrosion in welded structures.
Heat Resistance
F310S is suitable for continuous service at up to 1150°C (2100°F) and intermittent use up to 1035°C (1900°F). It maintains mechanical strength, scaling resistance, and structural stability in thermal cycling and high-temperature oxidizing conditions.
Heat Treatment
Solution Annealing: 1040°C to 1150°C followed by rapid water or air quenching.
Purpose: Restores corrosion resistance and mechanical properties after fabrication or welding.
No PWHT Required: Typically not necessary due to the austenitic structure.
Welding
ASTM A182 F310S can be welded using TIG, MIG, and SMAW techniques with fillers like ER310S. Low carbon minimizes carbide precipitation, reducing the risk of sensitization in heat-affected zones.
Fabrication
Can be hot worked or cold worked using conventional methods.
Hot Working Temperature: 975–1175°C
Cold Working: Requires higher forces than standard 304/316 stainless steels.
Post-Fabrication Solution Annealing recommended to restore full corrosion resistance.
Applications
Furnace Parts & Heat Treatment Equipment
Chemical & Petrochemical Processing
Boilers, Heat Exchangers, and Retorts
Aerospace & Gas Turbine Components
Marine & Offshore Applications
Laboratory and High-Temperature Vessels
Pulp & Paper Industry Components