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ASTM A193 / A194 Stainless Steel 347 / 347H Stud Bolts

Stainless steel is a popular material used in various applications, including construction, oil and gas industries, and aerospace. One of the essential components of stainless steel fasteners is stud bolts. However, not all stud bolts are created equal. Stainless steel 347 is a type of austenitic steel alloy that contains chromium, nickel, and columbium. Stainless Steel 347 Stud Bolts are commonly used in high-temperature environments, where their excellent high-temperature strength and corrosion resistance properties come in handy. These stud bolts can be found in various applications, including turbines, furnace combustion chambers, and exhaust manifolds.

Stainless Steel S34700 Stud Bolts, Stainless Steel S34709 Stud Bolt, Stainless Steel 347 Stud Bolts, Stainless Steel 347H Stud Bolt, Stainless Steel 347/347H Stud Bolts Exporter, ASTM A193 Stainless Steel 347 Stud Bolts, Stainless Steel 1.4961 Stud Bolts, Stainless Steel 1.4550 Stud Bolt, ASME SA194 Stainless Steel 347 / 347H Stud Bolts Leading Manufacturers in Mumbai, India.

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Stainless steel 347H is a higher carbon version of 347, capable of withstanding even higher temperatures of up to 1,600°F. The added carbon content enhances its mechanical properties, making it an excellent fit for high-temperature applications. Stainless Steel 347H Stud Bolts can be found in various applications, including chemical processing plants, petrochemical plants, and steam boilers.
Stainless steel 347 stud bolts offer benefits, including excellent corrosion resistance, high-temperature strength, and good fabricability. They are also durable, stable, and have a high creep strength. These properties make stainless steel 347 stud bolts perfect for high-pressure and high-temperature applications.

Stainless steel 347H stud bolts are similar to 347 stud bolts but offer additional properties, including higher carbon content, improved strength, and stability at higher temperatures. Stainless steel 347H stud bolts are commonly used in high-temperature environments where high strength and resistance to stress that moderates the temperature are essential.
Stainless steel 347 stud bolts are commonly used in high-temperature environments requiring excellent corrosion resistance and high strength. On the other hand, Stainless steel 347H stud bolts are suitable for chemical processing plants, petrochemical plants, and steam boilers that require the material to withstand even higher temperatures.

It's essential to understand the differences between Stainless Steel 347 Stud Bolts and Stainless Steel 347H Stud Bolts before choosing which fasteners to use in specific applications. Both types have specific benefits and uses, so selecting the appropriate fastener to endure extreme conditions is crucial. Understanding the application temperature range and the specific mechanical properties will aid in making the best decision for selecting these stud bolts.


Stainless Steel 347 Studbolts provide excellent resistance to intergranular corrosion, making them suitable for applications where sensitization can occur. Their high-temperature strength and oxidation resistance make them ideal for petrochemical, chemical processing, and power generation applications.

Stainless Steel 347H Studbolts can be used at temperatures up to 1000°C (1832°F) in continuous service.

Yes, Stainless Steel 347H Studbolts can be used in cryogenic applications. It retains good mechanical properties and toughness at extremely low temperatures, making it suitable for cryogenic environments such as liquefied natural gas (LNG) facilities & aerospace applications.

Specification of Stainless Steel 347 / 347H Stud Bolt

Spec bag
Specifications: ASTM A193,A194 / ASME SA193,SA194
Standard: DIN, ASTM, BS and all International Standards
Length: Upto 1 Meters
Stud Bolt Size: M3 - M56 | 3/6" to 2" | Custom Sizes
Heat Treatment: Annealing, Stress Relieving, Case Hardening, Quenching and Tempering.

Types of Stainless Steel 347 / 347H Stud Bolts

Stainless Steel 347 / 347H Threaded Stud Bolts

Stainless Steel 347 / 347H Threaded Stud Bolt

  • - ASTM A193 SS 347 Threaded Stud Bolt
  • - S34700/S34709 Threaded Stud Bolt
  • - 1.4550 / 1.4961 Full Threaded Stud Bolt
  • - 347H SS Heavy Threaded Stud Bolts
  • - ASME SA194 SS 347H Threaded Stud Bolt
  • - SS 347 Half Threaded Stud Bolts Supplier
  • - SS 347H Threaded Stud Bolts Manufacturer
Stainless Steel 347 / 347H Heavy Stud Bolts

Stainless Steel 347 / 347H Heavy Stud Bolt

  • - ASTM A193 SS 347 Heavy Stud Bolt
  • - S34700/S34709 Heavy Stud Bolt
  • - 1.4550 / 1.4961 Heavy Stud Bolt
  • - 347H SS Heavy Stud Bolts
  • - ASME SA194 SS 347H Heavy Stud Bolt
  • - SS 347 Heavy Stud Bolts Supplier
  • - SS 347H Heavy Stud Bolts Manufacturer
Stainless Steel 347 / 347H Tap End Stud Bolts

Stainless Steel 347 / 347H Tap End Stud Bolt

  • - ASTM A193 SS 347 Tap End Stud Bolt
  • - S34700/S34709 Tap End Stud Bolt
  • - 1.4550 / 1.4961 Tap End Stud Bolt
  • - 347H SS Tap End Stud Bolts
  • - ASME SA194 SS 347H Tap End Stud Bolt
  • - SS 347 Tap End Stud Bolts Supplier
  • - SS 347H Tap End Stud Bolts Manufacturer
Stainless Steel 347 / 347H Flange Stud Bolts

Stainless Steel 347 / 347H Flange Stud Bolt

  • - ASTM A193 SS 347 Flange Stud Bolt
  • - S34700/S34709 Flange Stud Bolt
  • - 1.4550 / 1.4961 Flange Stud Bolt
  • - 347H SS Flange Stud Bolts
  • - ASME SA194 SS 347H Flange Stud Bolt
  • - SS 347 Flange Stud Bolts Supplier
  • - SS 347H Flange Stud Bolts Manufacturer

Equivalent Grades for Stainless Steel 347 / 347H Stud Bolt

STANDARD WERKSTOFF NR. UNS JIS GOST EN
SS 347 1.4550 S34700 SUS 347 08Ch18N12B X6CrNiNb18-10
SS 347H 1.4961 S34709 SUS 347H - X6CrNiNb18-12

Stainless Steel 347 / 347H Stud Bolt Chemical Composition

Grade C Mn Si P S Cr Cb Ni Fe
SS 347 0.08 max 2.0 max 1.0 max 0.045 max 0.030 max 17.00 - 20.00 10xC – 1.10 9.00 - 13.00 62.74 min
SS 347H 0.04 – 0.10 2.0 max 1.0 max 0.045 max 0.030 max 17.00 - 19.00 8xC – 1.10 9.0 -13.0 63.72 min

Mechanical Properties of Stainless Steel 347 / 347H Stud Bolts

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
8.0 g/cm3 1454 °C (2650 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %

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Application Industries

  • Refineries
  • Petrochemicals Industry
  • Oil & Gas Industry
  • Mining
  • Construction
  • Pharmaceuticals
  • Automobile