China Super Duplex Steel Manufacturers and Suppliers - Super Duplex Steel for Sale

Your Professional Super Duplex Steel Supplier

JN is a company with more than 15 years of experience in providing high-quality Stainless steel and Nickel Alloys. Its product range covers Pipes, steel Plates, Flanges, Prefabricated welding products, etc. Since its establishment, we have been constantly pursuing technological innovation and excellent quality and have become a leader in the industry.Technical consultation: providing customers with professional technical support and consultation to help them choose the most suitable materials and processing solutions.

Super Duplex S32760 / F55 / 1.4501
Type: . Pipes. Plates. Bars. Fittings. Forgings. Flanges. Prefabrication. We are Super Duplex steel S32760 manufacturer and supplier, top quality, competitive price, professional distribution and after-sales
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Super Duplex S32750 / F53 / 1.4410
Type: . Pipes. Plates. Bars. Fittings. Forgings. Flanges. Prefabrication. We are Super Duplex steel S32750 manufacturer and supplier, top quality, competitive price, professional distribution and after-sales
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Why Choose Us

01/

Product Application
Oil and Gas, Power Plants, Chemical and Petrochemical, Food and Beverage, Pharmaceutical, Automotive, Aerospace, Marine and many other Industries.

02/

One-stop Services
We provide high-quality products according to customer needs, and we can also recommend suitable products to customers according to their needs.

03/

Production Market
We are mainly engaged in pipelines for oil and gas plants, and the main markets are Southeast Asia, Asia, the Middle East, Europe, some countries in North America and South America, and some other countries in need. Because these customers recognize our company, they will also introduce local customers to us.

04/

Our Certificate
We have passed a series of quality certifications: CE, ISO 9000, PED EU pressure equipment manufacturing license, GOOST, Special equipment manufacturing license (TS), Factory accreditation certificate (MA) of the United States Classification Society, ect.

Benefits of Super Duplex Steel

Exceptional Corrosion Resistance
Super Duplex steel is highly valued for its exceptional corrosion resistance, making it ideal for harsh environments. With high levels of chromium, molybdenum, and nitrogen, it offers superior protection against uniform corrosion, especially in chloride-rich settings.

Superior Machining Properties
Its unique mix of strength and flexibility makes machining easier, allowing for the use of standard processes while maintaining structural integrity.

High Heat Resistance
Its ability to withstand high temperatures makes it perfect for industries facing intense heat, like chemical processing and power generation. Super Duplex steel maintains its mechanical properties and corrosion resistance even at elevated temperatures, ensuring the longevity and reliability of components subjected to high thermal loads.

Excellent Weldability
The weldability of Super Duplex steel is another significant advantage. It can be welded using various techniques, including laser-hybrid welding, ensuring strong, durable joints with minimal heat-affected zones.

Effective Thermal Conductivity
Super Duplex steel offers effective thermal conductivity, enhancing heat transfer in applications like heat exchangers and condensers.

Cost Efficiency
Although initially more expensive than some materials, Super Duplex steel offers long-term savings through reduced maintenance and replacement costs.

Product Description

Product name	Super Duplex Steel
Process method	Cold drawn/cold pilgered
Surface finish	Annealed/cold pilgered/manual polished/mechanical polished
Material	UNS32760, UNS32750
Standards	ASTM (ASME) A 789/ A 789M
Size	Diameter: 4mm~800mm Length: Max. 16 meters
Applications	For heater exchanger, condenser

Bars Equivalent Of Super Duplex Steel

STANDARD	WERKSTOFF NR.	UNS
Super Duplex S32750	1.4410	S32750
Super Duplex S32760	1.4410	S32760

Mechanical properties

Mechanical properties	Tensile, min, ksi[MPa]	Yield, min, ksi[MPa]	Elongation, %(min)	Hardness, HB（max）
S32750	116 [800]	80 [550]	15	300
S32760	109 [750]	80 [550]	25	300

Standard Specification

Specification
ASTM A240 / ASME SA240

Length
2000 mm / 2440 mm / 2500 mm / 3000 mm / 6000 mm.

Width
1000mm / 1219mm /1250mm / 1500mm / 2000mm

Thickness
Ranging from 0.3mm to 20mm

Hardness
As per ASME A & NACE MR 175

Finish
Hot rolled plate (HR), Cold rolled sheet (CR)

Characteristic temperatures of Super Duplex Steel

	Temperature in °C
Solidification range	1445 - 1385
Scaling temperature in air	1000
Hot forming	1200 - 1000
Solution annealing	1040 - 1120
Stress relief annealing (max 5h)	1040 - 1120
Use in pressure vessels	(-10) - 250

Application of Super Duplex Steel

Construction Industry

The construction industry also leverages the strengths of Super Duplex Steel, particularly in projects exposed to harsh environments. Bridges and coastal buildings utilize this material to ensure structural integrity over time.

Power Generation

In power generation facilities, components such as valves, pumps, and piping systems often use Super Duplex Steel. Its ability to endure high temperatures and corrosive environments ensures the reliable operation of power plants.

Aerospace

The aerospace industry takes advantage of Super Duplex Steel’s high strength and toughness. Aircraft components, including landing gear and engine parts, are crafted from this alloy to withstand the demanding conditions of flight.

Other Applications

Super Duplex Steel finds its way into various other sectors, such as the pulp and paper industry, where it is used in digesters and bleaching units. Its compliance with hygiene standards also makes it suitable for food processing equipment and biofuels plants.

FAQ

Q: What are the key advantages of using Super Duplex Steel?

A: Super Duplex Steel offers key advantages such as exceptional corrosion resistance, superior mechanical properties with higher yield and tensile strength, and high durability due to its dual-phase microstructure. It is also cost-efficient in the long term due to its durability, supports structural benefits with lighter yet stronger sections, and maintains integrity at high temperatures.

Q: What are the main disadvantages of Super Duplex Steel?

A: Super Duplex Steel, while offering exceptional corrosion resistance and strength, has notable disadvantages. It is prone to sigma phase formation when exposed to certain high temperatures, which can reduce its corrosion resistance and impact toughness.

Q: How does the chemical composition of Super Duplex Steel contribute to its properties?

A: The chemical composition of Super Duplex Steel significantly contributes to its properties by offering a balanced mix of chromium, molybdenum, nickel, and nitrogen. High chromium content (24-28%) enhances corrosion resistance, while molybdenum (3-5%) boosts performance in acidic environments.

Q: In which industries is Super Duplex Steel commonly used?

A: Super Duplex Steel is commonly used in several key industries due to its exceptional properties such as high corrosion resistance, increased strength, and cost efficiency. Notably, it is extensively utilized in the oil and gas industry for subsea pipelines, offshore platforms, and refineries.

Q: How does Super Duplex Steel compare to other stainless steel grades?

A: Super Duplex Steel stands out compared to other stainless steel grades due to its dual-phase microstructure, combining austenitic and ferritic grains, which endows it with superior mechanical properties and exceptional corrosion resistance, especially in chloride-rich environments.

As one of the leading super duplex steel manufacturers and suppliers in China, we warmly welcome you to buy high-grade super duplex steel for sale here from our factory. All our products are with high quality and competitive price.

alloy grade, alloy profile, alloy corrosion resistance