SS 347 Hex Bolts

SS 347 Hex Bolts are high-strength fasteners manufactured from stabilized austenitic stainless steel, offering excellent resistance to intergranular corrosion and high-temperature oxidation. These bolts are ideal for use in environments exposed to heat, chemicals, and pressure—such as exhaust manifolds, chemical processing units, heat exchangers, and boilers. Zeron Fasteners provides premium quality Stainless Steel 347 Hex Bolts that ensure superior tensile strength, durability, and dimensional accuracy. Each SS 347 Hex Bolt is engineered to perform reliably under extreme thermal and mechanical stresses, making them the preferred choice in power generation, petrochemical, and refinery industries.

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SS 347 Hex Bolts Chemical Composition

Element Composition (%)
Chromium (Cr) 17.0 – 19.0
Nickel (Ni) 9.0 – 13.0
Carbon (C) 0.08 max
Manganese (Mn) 2.00 max
Silicon (Si) 1.00 max
Phosphorus (P) 0.045 max
Sulfur (S) 0.030 max
Niobium + Tantalum (Nb + Ta) 10 × C min, 1.00 max

SS 347 Hex Bolts Mechanical Properties

Mechanical Property Value
Tensile Strength 515 MPa min
Yield Strength (0.2% Offset) 205 MPa min
Elongation 40% min
Hardness (Brinell) 217 max
Melting Point 1398 – 1446°C

SS 347 Hex Bolts Feature Products