Weston Stainless, Midland, UK, is a top supplier of high-quality stainless steel products, providing long-lasting and corrosion-resistant solutions for industrial use. One of its high-end products, Stainless Steel 440C Fasteners, is a high-carbon martensitic stainless steel fastener that is renowned for its high hardness, strength, and wear resistance. Manufactured from Grade 440C stainless steel, these fasteners are available in various shapes, including bolts, nuts, screws, washers, and studs, ensuring versatility in industrial applications. With high chromium and carbon content, Stainless Steel 440C Fasteners provide excellent corrosion resistance, superior mechanical stability, and long-lasting performance, making them ideal for demanding environments.
Stainless Steel 440C Fasteners consist of iron, chromium (16.0-18.0%), carbon (0.95-1.20%), manganese (1.0% max), silicon (1.0% max), and molybdenum (0.75% max), with high strength and corrosion resistance. The fasteners have a tensile strength of around 760-895 MPa, a yield strength of around 450 MPa, and an elongation of around 14%. Having a density of 7.8 g/cm³ and a melting point near 1480°C, they possess great thermal conductivity and wear resistance. Their hardness is 58-60 HRC in heat-treated form, providing durability to applications involving high stress demanding high mechanical stability.
Specification : ASTM A193 / ASME SA193
Dimensions : ASME B18.2.1, ASME B18.3, DIN 931, DIN 933, DIN 934, DIN 7991, DIN 976
Standard : DIN, GB, BS, ISO, IS, JIS, ASTM, ASME, EN, etc.
Size : M02 to M33
Length : 3 mm to 200 mm
Threads : ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads
Types : Nuts, Bolts, Screws, Sockets, Studs, Screw, Hex Set Screw, Socket Screw, Cap Screw, Pan Head Screw, Machine Screw, Socket Head Cap Screw, Allen Cap screw, Wing Screw, Washers, Spring Washers, Studs, Anchors, Marine Anchors, Nut, Hexagon Nut, Hex Nut, Hex Coupling Nut, Hex Domed Cap Nuts, Square Nut, Stud Bolts, Hex Head Bolts, Socket Hexagon Head Screw Anchor Bolt, U- Bolts, J Bolts, Mushroom Head Square Neck Bolts, T-Head Bolts, Wing Screw, Eye Bolt, Foundation Bolts, Structural Bolts.
| Grade | C | Mn | Si | P | S | Cr | |
| 440C | min. | 0.95 – 1.20 | – | – | – | – | 16.0 |
| max. | 0.12 | 1.0 | 1.00 | 0.04 | 0.030 | 18.0 | |
| 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 | ||||
| 440C | 758 | 448 | 14 | 95 | – |
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High corrosion resistance and excellent strength due to the high carbon content. They are available in sizes ranging from M3 to M48 and meet various industrial standards for dimensions and tolerances.
Exceptional corrosion resistance and high tensile strength. They come in diameters from M6 to M30 and lengths from 50mm to 1000mm, suitable for demanding applications requiring precision and durability.
Ideal for harsh environments and offer superior corrosion resistance and high strength. They are available sizes from M5 to M36, with varying lengths and thread specifications to meet diverse application needs.
Excellent corrosion resistance and high tensile strength. They are typically available in diameters from M6 to M30 and lengths up to 3000mm, suitable for use in various industrial settings.
Corrosion resistance and high strength. Commonly available in sizes from M3 to M20, lengths varying based on application needs, they are ideal for precision and heavy-duty fastening tasks.
Corrosion resistance and durability, making them ideal for distributing loads and protecting surfaces. They are available in sizes from M3 to M36 and come in various thicknesses to meet specific application needs. Their robust properties ensure reliable performance in demanding environments.
Stainless Steel 440C Fasteners are considerably used in aerospace, automotive, marine, and heavy industry applications on account of their high strength coupled with great wear and corrosion resistance. They are widely applied in high-pressure machinery, power generation equipment, and precision devices requiring superior mechanical performance. They are also used in defense, medical devices, and food processing equipment where resistance to harsh conditions is necessary. They are suitable for fastening parts in severe industrial conditions due to their resistance to high temperatures and mechanical stress, which guarantees reliability and long-term performance.
Stainless Steel 440C Fasteners are provided with necessary test certificates such as material test reports (MTR), third-party inspection reports, and EN 10204 3.1 certification to maintain industry standards. Proper packaging in wooden crates, cartons, or plastic-bundled bundles avoids damage during transit. Timely and secure delivery ensures that customers get their products in perfect condition, with the facility for custom packaging upon request to suit particular industry requirements while ensuring product integrity and quality assurance.
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