Emilio Stainless, located in Manila, Philippines, has earned a solid reputation as a reliable manufacturer and supplier of top-notch stainless steel products, with a particular focus on Stainless Steel 321H Bolts. These bolts are celebrated for their durability, resistance to corrosion, and precision engineering, crafted to meet international standards and ensure dependable performance across a variety of industrial applications. Emilio Stainless merges cutting-edge manufacturing techniques with strict quality control, guaranteeing that every bolt delivers consistent strength and longevity. Their dedication to excellence and prompt delivery makes them a go-to choice for businesses in need of high-quality fastening solutions in sectors like construction, marine, chemical, and high-temperature environments.
Stainless Steel 321H Bolts are mainly made up of iron, chromium (17–19%), nickel (9–12%), and a touch of titanium to boost stability at high temperatures. The “H” designation signifies a higher carbon content, which enhances creep resistance and strength when exposed to elevated temperatures. These bolts boast impressive mechanical properties, featuring a tensile strength of about 700–900 MPa, yield strength around 450–600 MPa, and hardness ranging from 170–210 HB. Their unique blend of high tensile strength, toughness, and thermal resistance ensures they perform reliably in challenging environments where standard stainless steel might not hold up.
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.
We perform several tough tests to guarantee the reliability and performance of our products. Our Stainless Steel 321H Bolts are checked stringently for quality, and we also offer third-party inspection for added assurance. Our logistics are efficient enough to ensure that our delivery is prompt and on time to meet the demands of our clients without delay.
You’ll find Stainless Steel 321H Bolts widely utilized in industries that demand resistance to heat, corrosion, and mechanical stress. They’re commonly found in chemical processing plants, petrochemical facilities, power generation units, marine settings, and aerospace components. These bolts are perfect for securing equipment, pipelines, flanges, and machinery that face high temperatures or corrosive conditions. Their durability and stability during thermal cycling make them ideal for steam systems, exhaust manifolds, and pressure vessels. Engineers and contractors trust 321H Bolts for their ability to maintain integrity and safety in critical applications.
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