Harshita Stainless, a reputable manufacturer and supplier located in Delhi, India, specializes in crafting top-notch Stainless Steel 440B Bolts designed for industries that demand exceptional hardness and wear resistance. Renowned for their precision manufacturing and commitment to stringent quality standards, the company provides durable and dependable fastening solutions that excel in challenging environments. Their 440B bolts come in a variety of sizes and finishes to cater to diverse customer needs. With a strong emphasis on timely delivery, customization, and performance, Harshita Stainless supports clients across various sectors, including engineering, defense, tooling, and heavy machinery, establishing themselves as a trusted partner for high-performance applications.
Stainless Steel 440B is a high-carbon martensitic stainless steel that contains about 16–18% chromium, 0.75–0.95% carbon, along with trace amounts of manganese, silicon, phosphorus, and sulfur. It boasts impressive hardness and moderate resistance to corrosion. When heat-treated, 440B bolts can reach tensile strengths of 760–1030 MPa, yield strengths around 450–750 MPa, and hardness levels between 55–58 HRC, depending on the tempering process. Although it’s less ductile than austenitic grades, it offers remarkable wear resistance, strength, and edge retention—making it perfect for applications that require mechanical durability and surface toughness under load.
|
Material |
Specification |
Standards |
Size |
Length |
|
Stainless Steel 440b Bolts |
ASTM, ASME and API |
ASTM B 193 / ASME SB 193 |
M02 to M30 |
3 mm To 200 mm |
| Element | SS 440b |
| 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 440b |
| 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 440B is a high-carbon martensitic stainless steel known for its excellent hardness, corrosion resistance and moderate corrosion resistance, making it suitable for demanding applications and precision tooling
Custom stainless steel 440B hex bolts are high-carbon martensitic stainless steel fasteners with hexagonal heads, tailored to high-strength wear-resistant applications, for durability and corrosion resistance
Stainless Steel 440B Leg Bolt is a high-carbon, martensitic steel fastener known for its excellent hardness and wear resistance. It’s ideal for heavy-duty applications, providing durability and strength.
Stainless Steel 440B Expansion Anchor Bolt is a high-carbon, martensitic steel fastener used for securing fixtures in concrete or masonry. Its hardness and strength ensure reliable performance under heavy loads.
Stainless Steel 440B Hex Flange Head Bolt features a hexagonal head with an integrated flange, offering high strength and wear resistance. It’s designed for heavy-duty applications requiring robust and stable fastening.
Stainless steel 440B full-threaded bolts are high carbon martensitic steel fasteners with full thread width and length. They offer exceptional rigidity and strength, suitable for demanding applications requiring full installation.
Quality control tests both destructive and non-destructive are conducted by our quality control team after manufacturing the Stainless Steel 440B Bolts. Advanced tools and techniques are used for testing in order to assure the client’s performance and longevity. When these bolts pass the tests, we package them correctly with relevant materials to conserve their quality during transport. We have ensured they reach the clients on time with no delays and make available all the necessary documentation at the time of delivery for full transparency.
Stainless Steel 440B Bolts are perfect for applications that require outstanding hardness, wear resistance, and moderate corrosion protection. These bolts find extensive use in industrial tooling, automotive assemblies, pump and valve systems, cutting equipment, and aerospace components, where surface strength and performance under pressure are crucial. They are also favored in knife manufacturing, marine fasteners, and mechanical parts that face abrasion or heavy mechanical loads. In industries such as defense, oil and gas, and heavy engineering, 440B bolts guarantee long-lasting performance, ensuring reliability in demanding environments.
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