MERIH STAINLESS, based in Istanbul, Turkey, is a reputable manufacturer and supplier of high-quality Stainless Steel 321H Bolts, specifically crafted for high-temperature and corrosive settings. With a strong background in advanced engineering and a commitment to international quality standards, the company provides bolts that guarantee durability, strength, and reliability. These Stainless Steel 321H Bolts are stabilized with titanium, which helps them resist intergranular corrosion, while their higher carbon content boosts their creep strength. MERIH STAINLESS is a dependable partner for various industries, including petrochemical, aerospace, chemical processing, and power generation, offering fastening solutions that perform exceptionally well under extreme conditions.
Stainless Steel 321H Bolts are austenitic stainless steels that contain 17–19% chromium, 9–12% nickel, and titanium for stabilization. The “H” variant features a higher carbon content, enhancing its high-temperature strength and creep resistance, making it ideal for prolonged exposure to elevated temperatures. Typically, these bolts provide a tensile strength of around 515 MPa and a yield strength of 205 MPa, while also maintaining excellent toughness. They demonstrate oxidation resistance up to 870°C, good weldability, and durability, ensuring reliable performance and stability in both corrosive and thermal environments.
Material | Specification | Standards | Size | Length |
Stainless Steel 321H Bolts | ASTM, ASME and API | ASTM B 193 / ASME SB 193 | M02 to M30 | 3 mm To 200 mm |
| Element | SS 321H |
| Tensile Strength (MPa) min | 480 |
| Yield Strength 0.2% Proof (MPa) min | 275 |
| Elongation (% in 50mm) min | 16 |
| Rockwell B (HR B) max Hardness | 95 |
| Brinell (HB) max Hardness | 201 |
| Element | SS 321H |
| Ni | 0.75 |
| C | 0.15 |
| Mn | 1.00 max |
| P | 0.04 max |
| S | 0.03 max |
| Si | 1.00 max |
| Cr | 11.5 – 13.5 |
| Mo | – |
| N | – |
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Stainless Steel 321H bolts are high-performance fasteners designed for high-temperature environments, offering exceptional resistance to oxidation and corrosion. Ideal for aerospace, chemical processing, and industrial applications requiring durability and reliability.
Custom Stainless Steel 321H Hex Bolt is a custom designed fastener with a hexagonal head, designed for high temperature applications. It provides excellent corrosion resistance and strength, ideal for industrial, aerodynamic and aerospace applications.
Stainless Steel 321H leg bolt features a unique leg design for enhanced stability and support. It offers superior high-temperature and corrosion resistance, making it ideal for demanding industrial and aerospace applications.
Stainless Steel 321H expansion anchor bolt is designed for anchoring in concrete or masonry, providing exceptional high-temperature and corrosion resistance. It expands upon installation for secure, reliable holding in harsh environments.
Stainless Steel 321H Hex Flange Head Bolt connects the hexagonal head with an integrated flange, providing superior thermal corrosion resistance. Ideal for safe clamping in industrial and aerospace applications.
Stainless Steel 321H full threaded bolts feature continuous threading and excellent resistance to high temperatures and corrosion. They are ideal for securing components in demanding industrial, aerospace, and chemical processing environments.
These bolts find extensive use in industries where strength and stability are crucial in high-temperature and oxidizing conditions. They’re commonly utilized in chemical processing equipment, petroleum refining units, and power generation systems like boilers, heat exchangers, and superheaters. The aerospace and automotive sectors also rely on them for applications in exhaust manifolds, jet engines, and thermal components that face extreme heat. Additionally, they are used in furnace parts, high-pressure piping systems, and food and pharmaceutical processing environments. With their secure fastening capabilities and longevity, Stainless Steel 321H Bolts are a top choice for demanding applications.
Stainless Steel 321H bolts are widely used in high-temperature applications such as aerospace components, exhaust systems and heat exchangers. Their excellent oxidation and corrosion resistance make them suitable for chemical processing, petrochemical industries and power generation. They are also employed in construction and manufacturing where elevated temperatures and corrosive environments are prevalent. Their ability to withstand thermal cycling and harsh conditions ensures reliable performance in critical applications requiring high strength and durability.
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