Zeron Fastners
SS 310 Hex Bolts
SS 310 Hex Bolts are robust mechanical fasteners made from high-chromium (approx. 25%) and high-nickel (approx. 20%) austenitic stainless steel. This medium-carbon alloy (UNS S31000) is specifically engineered for high-temperature service, exhibiting outstanding resistance to oxidation up to 2000°F (1093°C) in continuous service. The high alloy content also provides excellent resistance to hot corrosion, making it a critical component in aggressive thermal environments like industrial furnaces, heat exchangers, and kiln linings. Hex bolts are one of the most common fastener types, valued for their ability to be driven with standard wrenches and their high tensile strength for robust connections. Zeron Fasteners manufactures and supplies high-quality SS 310 Hex Bolts often adhering to specifications like ASTM A193 (for high-pressure/high-temperature bolting), ensuring maximum durability and performance in extreme conditions.
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SS 310 Hex Bolts Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.25 |
| Manganese (Mn) | 2.00 |
| Silicon (Si) | 1.50 |
| Phosphorus (P) | 0.045 |
| Sulfur (S) | 0.030 |
| Chromium (Cr) | 24.0 – 26.0 |
| Nickel (Ni) | 19.0 – 22.0 |
Note: The "310S" grade specifies Carbon max. at 0.08%, commonly supplied for better weldability.
SS 310 Hex Bolts Mechanical Properties
| Property | Value (Typical) |
|---|---|
| Tensile Strength | 515 MPa 75,000 psi |
| Yield Strength (0.2% Offset) | 205 MPa 30,000 psi |
| Elongation | 40% |
| Hardness | 217 HB 95 HRB |
Based on typical values for SS 310 fasteners (e.g., ASTM A193 Grade B8, Class 1 or A479/A240).