MERIH STAINLESS, based in Istanbul, Turkey, is a reputable manufacturer and supplier of high-quality Stainless Steel 347H Nuts, specifically crafted for high-temperature and corrosive industrial applications. These nuts are celebrated for their durability, strength, and resistance to intergranular corrosion, making them a reliable choice for fastening solutions in challenging environments. With a commitment to precision and strict adherence to international standards, MERIH STAINLESS guarantees that its Stainless Steel 347H Nuts provide long-lasting performance and safety. They find extensive use in industries such as petrochemical, chemical processing, power generation, and aerospace, where secure connections and resistance to thermal stress are essential.
Stainless Steel 347H Nuts are a type of stabilized austenitic stainless steel, containing 17–19% chromium, 9–13% nickel, along with trace amounts of columbium (niobium) and tantalum. The “H” designation signifies a higher carbon content, which enhances high-temperature strength and creep resistance. These nuts boast a tensile strength of around 515 MPa, a yield strength of 205 MPa, and impressive toughness even in elevated temperature conditions. They also excel in oxidation resistance, weldability, and durability, making them ideal for extended service in corrosive and high-temperature settings.
| 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 nuts, Square nuts, Lock nuts, Eye nuts, wing nuts, T nuts, Panel Nuts, Coupling Nuts, Dome nuts, Acorn Nuts. |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 347H | min. | 0.04 | – | – | – | – | 17.0 | 3.00 | 9.0 | – |
| max. | 0.10 | 2.0 | 1.00 | 0.045 | 0.030 | 19.0 | 4.00 | 13.0 | – | |
| 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 | ||||
| 347H | 515 | 205 | 40 | 92 | 201 |
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A corrosion-resistant product, Stainless Steel 347H nuts are available in sizes ranging from M6 to M64. They are designed for high-temperature applications, offering excellent creep resistance and stability in extreme conditions, suitable for aerospace and power generation industries.
A corrosion-resistant product, Stainless Steel 347H coupling nuts connect two male threads and come in sizes from M6 to M36. They provide high strength and thermal stability, making them ideal for high-temperature applications in industrial and aerospace settings.
A corrosion-resistant product, Stainless Steel 347H nylon insert nuts, or lock nuts, are available in sizes from M3 to M36. The nylon insert prevents loosening under vibration, providing reliable performance in high-temperature environments where stability and security are crucial.
A corrosion-resistant product, Stainless Steel 347H flange hex nuts feature a built-in washer-like flange and come in sizes from M5 to M20. They offer enhanced load distribution and stability in high-temperature applications, ensuring durability and reliability.
A corrosion-resistant product, Stainless Steel 347H heavy hex nuts are larger and thicker, available in sizes from M10 to M48. They provide increased strength and thermal stability, making them suitable for heavy-duty and high-temperature industrial applications.
A corrosion-resistant product, Stainless Steel 347H square nuts have a larger surface area for contact, available in sizes from M6 to M30. They are ideal for high-temperature applications that require secure fastening in confined spaces and robust performance.
Stainless Steel 347H Nuts are widely utilized in industries that demand fastening components capable of enduring high temperatures and corrosive environments. They are frequently found in chemical processing equipment, petrochemical refineries, and power generation systems, including boilers, superheaters, and heat exchangers. The aerospace and marine sectors also depend on them for components that face thermal and corrosive stress. Additionally, they are used in high-pressure piping systems, furnace equipment, and thermal processing units. These nuts ensure secure fastening, a long service life, and dependable performance even in the harshest industrial conditions.
Stainless steel 347H nuts are used in high temperature applications such as aerospace, chemical processing and power generation. Their improved creep resistance and stability make them ideal for environments where thermal cycling is constantly used, providing reliable performance under challenging industrial conditions.
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