Zeron Fastners
SS 310 Weld Neck Flanges
The SS 310 Weld Neck Flange (often abbreviated as WN Flange) is a crucial piping component characterized by its long, tapered hub that gradually transitions to the pipe wall thickness. This design allows for a strong, high-integrity butt-weld connection, making it ideal for severely strenuous conditions involving high pressure, sub-zero, or elevated temperatures. These flanges are forged from Stainless Steel Grade 310, an advanced austenitic alloy that offers superb oxidation resistance and structural stability in continuous service up to 1035°C. Zeron Fasteners manufactures and supplies precision-engineered SS 310 Weld Neck Flanges compliant with international standards like ASME B16.5. Their use is non-negotiable in critical applications such as nuclear plants, oil and gas pipelines, and high-temperature furnace systems, where joint strength and leak prevention are paramount.
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SS 310 Weld Neck Flanges Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.25 |
| Manganese (Mn) | 2.00 |
| Silicon (Si) | 1.50 |
| Chromium (Cr) | 24.0 – 26.0 |
| Nickel (Ni) | 19.0 – 22.0 |
| Phosphorus (P) | 0.045 |
| Sulfur (S) | 0.030 |
Note: The "310S" grade specifies Carbon max. at 0.08%, commonly supplied for better weldability.
SS 310 Weld Neck Flanges Mechanical Properties
| Property | Value (Typical) |
|---|---|
| Tensile Strength | 515 MPa |
| Yield Strength (0.2% Offset) | 205 MPa |
| Elongation in 50mm | 35 % |
| Hardness (HB) | 217 max |
| Creep Rupture Strength (1000h) | ~30 MPa at 900°C |