Akor Stainless is a reputable manufacturer and supplier based in Abuja, Nigeria, specializing in high-quality Stainless Steel 440B Bolts that are built for exceptional strength and durability. These bolts are recognized for their impressive hardness, wear resistance, and moderate ability to resist corrosion, making them perfect for tough mechanical and structural tasks. With cutting-edge production methods, Akor Stainless guarantees precise threading, accurate dimensions, and reliable performance even under pressure. You’ll find Stainless Steel 440B Bolts in various industries, including engineering, marine, automotive, and construction, where high tensile strength and resistance to wear are crucial for maintaining strong joints.
Stainless Steel 440B Bolts are made from martensitic stainless steel and contain about 16–18% chromium, 0.75% molybdenum, and 0.9–1.2% carbon. This unique blend strikes a great balance between hardness and corrosion resistance. They boast a tensile strength of roughly 760–1000 MPa and a yield strength of around 450 MPa, along with impressive wear resistance after heat treatment. The alloy is known for its high edge retention and dimensional stability. While they may not resist corrosion as well as austenitic grades, 440B bolts deliver outstanding hardness (up to 58 HRC) and strength, making them ideal for high-stress mechanical settings.
|
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 demand remarkable hardness and resistance to wear. You’ll often find them in machinery components, automotive assemblies, pump systems, valves, turbine blades, and precision instruments. They’re also utilized in marine hardware, tools, and industrial fasteners that face moderate corrosive environments. Thanks to their ability to maintain structural integrity under heavy loads and temperature fluctuations, 440B bolts are excellent for both static and dynamic fastening. Their high strength and wear resistance make them particularly reliable in demanding situations.
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