Home > Super Duplex Steel > Super Duplex Steel Forgings
| Standard | ASTM A182, ASME SA182 |
| Specification | DIN, ASTM, BS and all International Standards |
| Flat bar blocks | up to 27″ width and 15,000 lbs. |
| Cylinders and sleeves | up to 50″ maximum O.D. and 65″ maximum length |
| Discs and hubs | up to 50″ diameter and 20,000 lbs. |
| Rolled, hand forged or mandrel forged rings | up to 84″ maximum O.D. and 40″ maximum length |
| Rounds, shafts and step shafts | up to 144″ maximum length and 20,000 lbs. |
| Forging Types | Impression Die Forging, Open Die Forging, Seamless Rolled Forging, Hot Forging, Cold Forging, Open die hammer forging, Impression die drop forging, Closed Die Forging, Press Forging, Upset Forging, Compression Forging, Swaging, Rotary Forging, Roll forging. |
| 0.2% Yield Strength, ksi | 65 min |
| Tensile Strength, ksi | 90 min |
| Elongation, % | 25 min |
| Hardness [HRC] | 293 max |
| Element | Cr | Ni | Mn | Si | P | S | C | N | Mo | Fe |
|---|---|---|---|---|---|---|---|---|---|---|
| MIN | 22.0 | 4.5 | – | – | – | – | – | 0.1 | 3.0 | – |
| MAX | 23.0 | 6.5 | 2.0 | 1.0 | 0.03 | 0.02 | 0.03 | 0.2 | 3.5 | bal |
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 modern production facilities strategically situated in the New Zealand, we maintain an extensive inventory of more than 25,000 tons of top-quality materials kept in stock and ready to go.
Reach out to us for a fast quote tailored to your requirement.
We supply these Super Duplex Steel Forgings in accordance with DIN, ISO, JIS or ANSI Standard.
Corrosion Resistance: Super duplex stainless steel forgings offer outstanding resistance to corrosion, particularly in aggressive settings that contain chlorides, acids and seawater. This capability surpasses that of conventional duplex austenitic stainless steels.
Weldability: Super duplex steel forgings can generally be welded when suitable welding methods and filler materials are used. This eases both design and fabrication, cutting down on production and manufacturing time.
Fatigue resistance: Thanks to their excellent fatigue resistance, super duplex steel forgings can endure cyclic loading without breaking down. This characteristic is valuable for pressure vessels, pipelines and structural components exposed to fluctuating loads.
Hardness: Super duplex steel forgings stay hard even under low temperatures, which makes them well suited for cryogenic uses. These properties matter in sectors like LNG (liquefied natural gas), transportation, and storage.
Strength: Super duplex steel forgings deliver greater strength than conventional austenite and duplex stainless steel. This makes them a good fit for industries demanding high levels of mechanical energy, such as those in offshore and marine settings, chemical manufacturing and the oil and gas industries.
Super Duplex Steel Forgings have uses as varied as the sectors they support, led mainly by the aerospace, railway, construction and automotive sectors 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: Super-duplex steel mesh finds broad application across the oil and gas sector in parts like valves, pumps, pipelines, offshore platforms and so on. Their resistance to corrosion, high strength and solid weldability under demanding conditions make such uses a perfect fit.
Pulp and Paper Industry: Within the pulp and paper sector, it serves digesters, bleachers, washers, pipelines and similar equipment thanks to its ability to withstand chemical corrosion and high-temperature
Marine Applications: For marine uses, super-duplex steel wings appear in areas like propeller shafts, submarine pipelines and offshore platforms owing to their corrosion resistance and strong mechanical properties
Desalination plants: Super duplex steel grids are the choice in desalination plants for numerous uses like pumps, piping and heat exchangers because they resist chloride-induced stress corrosion cracking
Chemical applications: It also serves chemical uses such as reactors, heat exchangers and storage tanks wherever resistance to corrosion from acids, alkalis and other damaging chemicals is needed
Water resistance: Super Duplex steel is recognized for its outstanding resistance to corrosion, particularly in aggressive settings like marine and chemical uses Assess the degree of corrosion resistance your application demands and select the Super Duplex grade to match. Common examples include UNS S32750 (also referred to as SAF 2507) and UNS S32760.
Cost: Taking into account the upfront material cost along with any extra expenses tied to fabrication, welding, and upkeep, weigh the prices of various super-duplex steels to identify the best value. Kari satisfies the cost and performance requirements of your application.
Weldability: Verify the weldability of the super duplex steel grade, particularly if the forgings will undergo welding during fabrication or installation. Certain grades might call for preheat treatment or post-welding steps to preserve corrosion resistance and mechanical characteristics.
Temperature and Pressure: Take into account the operating temperature and pressure conditions the forgings will face. Confirm that the chosen super duplex steel grade can endure these conditions without sacrificing its integrity.
Mechanical properties: Identify the mechanical properties required for your application, such as tensile strength, yield strength, and impact resistance. Various types of super duplex steel may offer differing mechanical properties, so pick the grade that suits your functional needs.
Email: sales@koasteel.nz
