Mbemba Stainless is a reliable manufacturer and supplier of **Stainless Steel 347 Nuts** based in Kinshasa, Congo. They provide top-notch fastening solutions that are specifically designed to withstand high temperatures and resist corrosion. These nuts are enhanced with niobium, which gives them exceptional resistance to intergranular corrosion and helps them maintain their strength even in oxidizing conditions. You’ll find that Stainless Steel 347 Nuts are perfect for demanding industries like petrochemical, power generation, and marine sectors. Mbemba Stainless is committed to upholding high manufacturing standards, ensuring precision threading and durability, so you can count on their fastening components for both heavy-duty and high-performance engineering needs.
**Stainless Steel 347 Nuts** are made up of chromium (17–19%), nickel (9–13%), niobium (columbium), carbon (≤0.08%), manganese, silicon, phosphorus, and sulfur. The niobium stabilization is key, as it prevents carbide precipitation during welding and when exposed to high temperatures. These nuts boast a tensile strength of around 515 MPa and a yield strength of 205 MPa, along with impressive creep resistance and oxidation stability. Thanks to their austenitic structure, they offer toughness, corrosion resistance, and the ability to retain strength even under fluctuating thermal conditions.
Grade | Mn | N | P | C | S | Cr | Mo | Si | Ni | Other | |
347 | min. max | 2.00 | – | 0.045 | – 0.08 | 0.030 | 17.0 19.0 | – | 0.75 | 9.0 13.0 | Nb=10(C+N) 1.0 |
Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
Rockwell B (HR B) max | Brinell (HB) max | ||||
347 | 515 | 205 | 40 | 92 | 201 |
|
Material |
Specification |
Standards |
Size
|
Length |
|
Stainless Steel 347 Nut |
IS BS ASTM |
ASTM A193 B8C |
3 mm to 200 mm |
M02 to M33 |
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A corrosion-resistant product, Stainless Steel 347 nuts are available in sizes from M6 to M64. They offer exceptional heat and oxidation resistance, ideal for high-temperature applications in aerospace and chemical processing industries.
A corrosion-resistant product, Stainless Steel 347 coupling nuts come in sizes from M6 to M36. They are designed to connect two male threads securely, providing high strength and stability in high-temperature and harsh industrial environments.
A corrosion-resistant product, Stainless Steel 347 nylon insert nuts, or lock nuts, are available in sizes from M3 to M36. The nylon insert helps prevent loosening under vibration, offering reliable performance in high-temperature applications.
A corrosion-resistant product, Stainless Steel 347 flange hex nuts feature an integrated flange and are available in sizes from M5 to M20. They provide enhanced load distribution and stability in high-temperature and corrosive environments.
A corrosion-resistant product, Stainless Steel 347 heavy hex nuts are available in sizes from M10 to M48. Their increased thickness and strength make them suitable for heavy-duty and high-temperature applications requiring robust and secure fastening.
A corrosion-resistant product, Stainless Steel 347 square nuts offer a larger contact surface and come in sizes from M6 to M30. They are ideal for high-temperature and heavy clamping applications, providing stability and durability.
We provide our customer with a high-quality stainless Steel 347 Nut with full transparency. All the products carry necessary documentations, which are commercial invoice packing list fumigation certificate; heat treatment chart of a test report from NABL-approved laboratory’s We also give EN10204 /3.1-b material test, PMI, and a report on radiography of 100%, along with our Third Party inspection report, to enable full documentation by which client can achieve complete satisfaction.
You’ll find **Stainless Steel 347 Nuts** widely used in **chemical processing, power generation, marine, aerospace, and heat treatment industries**. Their ability to withstand high temperatures and resist oxidation makes them ideal for fastening components in boilers, heat exchangers, exhaust systems, and reactors. They’re also great for steam piping, furnace parts, and equipment that undergoes continuous heating and cooling cycles. With their long-lasting performance, dimensional stability, and excellent resistance to scaling and thermal fatigue, Stainless Steel 347 Nuts are a solid choice for harsh industrial environments.
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