Home > Duplex Steel > Duplex Steel Bolts
| Specifications | ASTM A479 & ASME SA479 |
| Standard | DIN, ASTM, BS and all International Standards |
| Length | 3 to 200 MM |
| Duplex Steel Nut and Bolts Size | M3 To M56 3/6″ to 2″ |
| Duplex Steel 2205 Machine Screws Size | M1.6 To M12 |
| Duplex Steel 2205 Washers Size | M3 To M56 3/6″ to 2″ |
Duplex Steel Bolts | Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80000 , MPa – 550 | Psi – 116000 , MPa – 800 | 15 % |
At Koasteel, we’re proud to be the largest supplier and manufacturer in the New Zealand, delivering advanced solutions for all your piping requirements. With cutting-edge production facilities strategically situated in the New Zealand, we maintain an extensive inventory of more than 25,000 tons of top-quality materials kept ready in stock.
Reach out to us for a fast quote tailored to your requirement.
We supply these Duplex Steel Bolts in accordance with DIN, ISO, JIS or ANSI Standard.
Corrosion Resistance: Duplex steel bolts offer outstanding resistance to corrosion, particularly in harsh conditions like seawater and solutions containing acids and chlorides. This resistance to corrosion contributes to prolonging the lifespan of structures and lowering equipment maintenance expenses.
High strength: Duplex steel bolts possess greater strength than austenitic stainless steel, delivering enhanced load-bearing capability and resistance to mechanical stress. This renders them appropriate for uses that demand higher strength-to-weight ratios.
High toughness: Duplex steel bolts pair high strength with outstanding toughness, enabling them to endure impact and fatigue loads without fracturing. This characteristic proves especially valuable in dynamic and high-stress settings.
Excellent weldability: Duplex steel bolts demonstrate outstanding weldability, which makes them simple to fabricate and assemble. Standard welding methods can be applied without notable defects or the risk of degrading mechanical quality.
Wide Temperature Range:Double-sided steel bolts maintain their mechanical properties across a broad temperature spectrum, from cryogenic to high temperatures, rendering them suitable for operational conditions
Versatility: Duplex steel bolts are adaptable and find use across numerous industries and applications, such as marine, oil and gas and chemical processing, construction, and automotive, among others, among
Strength against stress cracking:Duplex steel bolts withstand stress corrosion cracking (SCC), a frequent issue in high chloride environmentas. This characteristic boosts their dependability and durability in corrosive settings.
Duplex Steel Bolts have applications as varied as the industries they support, led mainly by the aerospace, railway, construction and automotive industries along with petrochemical, nuclear, medical, Oil & Gas, Chemical, Pharmaceutical, Food & Beverage, Nuclear, Thermal Power plants, Paper and Pulp, marine and mining, etc.
Oil and Gas Industry: Duplex steel bolts are employed in offshore drilling rigs, subsea equipment, pipelines, and refineries thanks to their outstanding corrosion resistance in seawater and their ability to withstand stress corrosion cracking (SCC).
Marine Applications: Two-dimensional steel cables serve to secure components on ships, offshore platforms, offshore structures and dock systems in marine settings where seawater corrosion frequently occurs.
Chemical industry: Double-sided steel bolts find use in the chemical industry for pumps, valves, heat exchangers, reactors and other equipment, where resistance to chemical corrosion and elevated temperatures is necessary.
Construction: Construction projects rely on two-dimensional steel cables to join structures to bridges, buildings, and other structures in demanding environments in coastal areas or industrial areas in
Power generation: Dual steel bolts serve turbines, boilers, heat exchangers and other equipment in power plants, including nuclear, fossil fuel and renewable energy facilities, where corrosion resistance and high strength are called for.
Automotive and Transportation: Duplex steel bolts are applied in the automotive and transportation industries for critical fastening tasks, such as engine components, chassis and suspension systems, where high strength and corrosion resistance are needed
Corrosion Resistance: Verify the environment in which the bolts will operate. Duplex steel bolts deliver outstanding resistance to corrosion, yet the particular alloy within can influence how they behave across different corrosive settings. Take into account elements like seawater exposure, acidic solutions, or chloride environments and pick the duplex steel grade accordingly.
Power Requirements: Identify the load and power demands of your application. Duplex steel bolts supply higher strength than austenitic stainless steel, though individual grades may vary in their strength properties. Pick a duplex steel bolt with sufficient tensile strength, yield strength, and stiffness to bear the applied load without breaking.
Temperature Stability: Factor in the temperature stability of the bolt. Duplex steel bolts hold onto their mechanical properties across a range of temperatures, yet extreme temperatures can influence performance. Make certain that the duplex steel bolts you pick can endure the temperature conditions you plan to use without weakening their mechanical properties.
Size and Dimensions: Select dual steel bolts with the proper size, thread pitch, length and head style to guarantee compatibility with mating components and correct fitment in the application. Weigh factors such as yarn type (e.g., coarse or fine), head style (e.g., hex, socket, or flat), and overall dimensions according to application requirements.
Environmental Conditions: Take note of any environmental conditions that might influence how the bolts perform, such as vibration, shock, or cyclic loads. Pick duplex steel bolts with suitable materials to handle these environmental conditions and avoid premature failure.
Email: sales@koasteel.nz
