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Mira Fasteners is a reliable manufacturer and supplier of Stainless Steel 347 Bolts, based in Kuala Lumpur, Malaysia. These bolts are perfect for high-temperature applications where exceptional resistance to intergranular corrosion and oxidation is essential. With columbium (niobium) added for stabilization, SS 347 bolts are dependable in welded structures and thermal cycling situations. Mira Fasteners caters to various industries, including power generation, chemical processing, refineries, and heat exchangers across Malaysia and Southeast Asia, providing bolts that adhere to strict international standards for mechanical strength and corrosion resistance.
Stainless Steel 347 Bolts mainly consist of 17–20% chromium and 9–13% nickel, with columbium included to prevent carbide precipitation during welding. These bolts boast a tensile strength ranging from 515–700 MPa and deliver outstanding mechanical performance at temperatures up to about 870°C. They are non-magnetic when annealed and maintain their strength and toughness even at elevated temperatures.
| Specifications | : | ASTM A 193 ASME SA 193 |
| Standard | : | DIN, ASTM, BS and all International Standards |
| Length | : | 3 mm to 200 mm |
| Size | : | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | : | Hex Head Bolts, Square Bolts, U bolts, Eye bolts, T bolt, Hex Bolt, Lag Bolts, Counter sunk Bolts, Hex Head nuts, Square nuts, Lock nuts, Eye nuts, wing nuts, T nuts, Panel Nuts, Coupling Nuts, Dome nuts, Acorn Nuts. |
| Element | SS 347 |
| Ni | 9.0 – 13.0 |
| C | 0.08 |
| Mn | 2.0 max |
| P | 0.045 max |
| S | 0.030 max |
| Si | 0.75 max |
| Cr | 17.0 – 19.0 |
| Mo | – |
| N | – |
| Element | SS 347 |
| Tensile Strength (MPa) min | 515 |
| Yield Strength 0.2% Proof (MPa) min | 205 |
| Elongation (% in 50mm) min | 40 |
| Rockwell B (HR B) max Hardness | 92 |
| Brinell (HB) max Hardness | 201 |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Stainless steel 347 bolts are widely used in applications requiring high corrosion and heat resistance. Due to its durability in extreme conditions, it is important in aerospace applications, medicine and power generation. These bolts are also used in petroleum refining and extraction areas, where they resist oxidation. In addition, stainless steel 347 bolts are suitable for heavy machinery and construction applications, providing reliable performance and durability in harsh environments and critical industrial conditions.
You’ll often find Stainless Steel 347 Bolts in high-temperature piping systems, boilers, superheaters, heat exchangers, and pressure vessels. Their ability to resist intergranular corrosion makes them ideal for situations that involve frequent thermal cycles and exposure to harsh chemicals. The addition of niobium enhances their weldability and long-term durability, ensuring that they provide secure fastening in challenging environments where both corrosion and thermal fatigue are significant concerns.
Mira Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kuala lumpur, Malaysia, with over 8 years of experience serving global industries.
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