Zeron Fastners
SS 310 Couplings
SS 310 Couplings are small, cylindrical pipe fittings used to join two pipes or to connect a pipe to a nozzle, valve, or other component, facilitating a straight-line connection. They are generally available as Full Couplings (threaded or socket-weld on both ends) or Half Couplings (threaded or socket-weld on one end, with the other end being butt-welded to a pipe or vessel). These fittings are fabricated from Stainless Steel Grade 310, a specialized chromium-nickel alloy known for its exceptional resistance to oxidation and high tensile strength at extremely high temperatures, up to 1035°C. Zeron Fasteners manufactures and supplies precise SS 310 Couplings, essential for creating secure, leak-tight joints in critical high-heat and corrosive systems, including those found in furnaces, boilers, heat exchangers, and high-pressure chemical lines.
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SS 310 Couplings 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 Couplings Mechanical Properties
| Property | Value (Typical) |
|---|---|
| Tensile Strength | 515 MPa |
| Yield Strength (0.2% Offset) | 205 MPa |
| Elongation in 50mm | 35 % |
| Hardness (HB) | 217 max |
| Proof Stress (0.2% Offset) | 240 MPa |