SS 347 Stud Bolts

SS 347 Stud Bolts are high-temperature resistant fasteners known for their superior strength and excellent resistance to intergranular corrosion. Made from stabilized stainless steel containing niobium, these bolts perform exceptionally well in environments exposed to heat and pressure. Zeron Fasteners manufactures and supplies precision-engineered SS 347 Stud Bolts that are widely used in petrochemical plants, power generation facilities, marine environments, and heat exchanger assemblies. Their robust design ensures secure tightening and long service life, making them ideal for both high-temperature and cryogenic applications.

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SS 347 Stud Bolts Chemical Composition

Element Composition (%)
Chromium (Cr) 17.0 - 19.0
Nickel (Ni) 9.0 - 13.0
Carbon (C) 0.08 max
Manganese (Mn) 2.0 max
Silicon (Si) 1.0 max
Phosphorus (P) 0.045 max
Sulfur (S) 0.03 max
Niobium (Nb) 10 × C min to 1.0 max
Iron (Fe) Balance

SS 347 Stud Bolts Mechanical Properties

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

SS 347 Stud Bolts Feature Products