| 2507/S32750 Stainless Steel Coil Manufacturing Process |
Hot Rolled (HR) / Cold Rolled (CR) |
| 2507/S32750 Stainless Steel Coil Grades |
201 / 304 / 304L/ 2507/S32750 / 309S / 420 / 316 / 316L / 316Ti / 317L / 321 / 321H / 347 / 347H / 904L etc. |
| UNS No. - UNS S2507/S32750, UNS S31008, UNS S31600, UNS S31603, UNS S31603, UNS S31600, UNS S31703, UNS S32100, UNS S34700, UNS S34709, UNS S8904 |
| EN No. 1.4845, 1.4401, 1.4404, 1.4571, 1.4438, 1.4541, 1.4550, 1.4551, 1.4539 |
| 2507/S32750 Stainless Steel Coil Thickness |
0.6 MM TO 16 MM THICKNESS |
| 2507/S32750 Stainless Steel Coil Width |
1250 MM / 1500 MM / 2000 MM / 04 Feet / 05 Feet and Custom Cut Width as Per Requirement |
| 2507/S32750 Stainless Steel Coil Length |
2400 MM / 2420 MM / 6000 MM / 08 Feet / 10 Feet / Coil Cut and Custom Cut Length as Per Requirement |
| 2507/S32750 Stainless Steel Coil Surface Finish |
2B, 2D, BA, MATT, MATT PVC, No.4, No.5, SB, HR, No.8, Mirror, Hairline, Brush, Textured, Oil base wet Polished, Both sides Polished available. |
| 2507/S32750 Stainless Steel Coil Coating |
PVC coating Normal / Laser, Film: 100 micrometer, Color: black/white. |
| 2507/S32750 Stainless Steel Coil Other Testing |
NACE MR0175, Ultrasoung TEST, IGC TEST, Intergranular Corrrosion Test as per ASTM A262 Practice E, Charpy Impact Test, Macro, Grain Size, Hardness, etc. |
| 2507/S32750 Stainless Steel CoilValue Added Services |
Gas Cutting / CNC Plasma Cutting / Profiling / Rolling / Bending / Sheet Metal Fabrication / Drill / Punch / Machining / Sand Blasting / Shot Blasting / Heat Treatment |
| 2507/S32750 Stainless Steel Coil Packaging |
Loose / Carrate / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps |
| 2507/S32750 Stainless Steel Coil Shipment & Transportation |
By Road - Truck / Train Partial Load, Full Load, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 45 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes |
| 2507/S32750 Stainless Steel Coil Material Test Certificate |
Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS, Bureau of Indian Standards BIS Approved ETC |
| Manufacturer |
POSCO, Aperam, Jindal Stainless, DKC Korea, Thyssenkrup, Baosteel, TISCO,Arcelor Mittal, VDM,Nippon Metal, Qingshan,Delong. |
| Shipping Port |
Shanghai/Ningbo port/Tianjin/Qindao |
Global leader in stainless steel coil fabrication services
Daxun is a premier full-service provider of 2507 Duplex Steel Coils in China, offering a diverse range of coil thicknesses from 0.5mm to 3.16mm. Our 2507 alloy duplex steel plates are a cost-effective alternative to high-end alloys like 904L or 6% molybdenum super austenitic stainless steel. Alloy 2507 (UNS S32750) is engineered for rigorous applications demanding exceptional strength and corrosion resistance, perfect for sectors such as chemical processing, petrochemical, and maritime equipment. This steel exhibits remarkable resistance to chloride stress corrosion cracking, superb thermal conductivity, and a minimal coefficient of thermal expansion. The elevated chromium, molybdenum, and nitrogen content ensures excellent resistance to pitting, crevice corrosion, and general corrosion.
Daxun Stainless Steel offers complete traceability for each stainless steel coil through our advanced ERP system, covering type, specification, and origin to combat industry counterfeiting. We leverage cutting-edge technology for precision processing and customization, setting industry standards in quality. Our comprehensive service model includes pre-sale professional material selection and processing solutions, rigorous monitoring during sales, and a reliable post-sale service guarantee through product life cycle management.
Quality, delivery, inspection
- Daxun conducts a series of stringent quality assurance tests including flattening tests, pitting and resistance tests, mechanical tests, hardness tests, material positive identification, and expansion tests. These rigorous checks ensure our materials meet the highest standards for their intended applications.
- During production, we meticulously measure product diameter, thickness, and surface quality. Our standard delivery timeframe is 7-15 days, with special size products requiring up to 20 days.
Our delivery times strictly adhere to the contract.
- Support customer third-party agencies to go to the factory for inspection
- Support free samples to customers for testing
- Support on-site or video factory inspection
Ordering Information
Purchase orders should detail quantity, grade, type or category, API5L reference, thickness, width, length, and any special requirements pertaining to chemical composition, mechanical properties, heat treatment, additional testing, manufacturing process, surface coating, or end finish. Contact Daxun today, and we will respond to your email promptly.
Daxun's journey into the stainless steel industry began in 2003. With two decades of thriving growth, we have firmly established ourselves as leaders in China's stainless steel materials and processing sector.
For over 20 years, Daxun has been a trusted name in the global market. In 2022, our export revenue surpassed US$100 million, cementing our place among the top stainless steel trade and processing firms in China. We have set up three comprehensive export service bases nationwide. By collaborating with engineering firms, steel mills, and international trading companies, we deliver unmatched services to the global market. Our commitment to excellence drives us to continuously enhance our service capabilities and expand our global footprint.
Daxun International offers the convenience of a stainless steel chain supermarket, maintaining long-term partnerships with leading steel mills worldwide. We boast 60,000 tons of standard stainless steel and 20,000 tons of specialty metals such as duplex steel, nickel-based alloys, and heat-resistant steel. Our stainless steel materials are synonymous with unrivaled quality and authenticity. Each variety, specification, and delivery weight adheres strictly to industry standards.
Daxun is equipped with state-of-the-art steel processing equipment and a professional physical and chemical testing center. Our comprehensive processing lines include cutting, grinding, forming, beveling, welding, heat treatment, machining, and spraying, ensuring top-notch precision and quality in every product.
Our services span over 30 industries, encompassing automobiles, home appliances, elevators, new energy, vacuum semiconductors, food and beverage/bio-fermentation, petrochemicals, and energy equipment. Partnering with steel mills, research institutions, and other entities, we offer integrated solutions from project design and material development to processing and manufacturing process optimization.
25072507 Stainless Steel Coil Chemical Composition
| Grade |
Super Duplex 2507 |
| UNS Designation |
S32750 |
| Carbon (C) Max. |
0.03 |
| Manganese (Mn) Max. |
1.2 |
| Phosphorous (P) Max. |
0.035 |
| *** (S) Max. |
0.02 |
| Silicon (Si) Max. |
0.8 |
| Chromium (Cr) |
24.0-26.0 |
| Nickel (Ni) |
6.0-8.0 |
| Molybdenum (Mo) |
3.0-5.0 |
| Nitrogen (N) |
0.24-0.32 |
| Iron (Fe) |
Bal. |
| Copper (Cu) |
0.5 |
| Other Elements |
- |
2507 Stainless Steel Coil Mechanical Properties
| Physical Properties of Super Duplex 2507 Alloys in the Annealed Condition at -20°F to +100°F |
| |
|
|
Tensile Strength |
Yield Strength |
|
|
|
|
|
|
| Alloy |
UNS Designation |
Spec. |
psi |
MPa |
ksi |
psi |
MPa |
ksi |
Elongation in 2 in. (min.) % |
Grain Size Req. |
Max. Hardness |
Modulus of Elasticity (x106 psi) |
Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6) |
Thermal Conductivity (BTU-in/ ft2-h-°F) |
| Super Duplex 2507 |
S32950 |
A789, A790 |
100,000 |
690 |
100 |
70,000 |
485 |
70 |
20 |
- |
30.5 Rc |
- |
- |
- |
| Super Duplex 2507 |
S32750 |
A789, A790 |
116,000 |
800 |
116 |
80,000 |
550 |
80 |
15 |
- |
32 Rc |
27.5 |
7.2 |
98 |
2507 Stainless Steel Coil Physical Properties
| Density, lb/in3 |
0.28 |
| Modulus of Elasticity, psi |
29.0x 106 |
| Coefficient of Thermal Expansion, 68-212˚F, /˚F |
7.5 x 10-6 |
| Thermal Conductivity, Btu/ft hr ˚F |
8 |
| Specific Heat, Btu/lb ˚F |
0.12 |
| Electrical Resistivity, Microhm-in |
31.5 |
What Is Duplex 2507 Stainless Steel?
Duplex 2507 stainless steel is a high-performance super duplex alloy renowned for its remarkable low carbon content (up to 0.03%), significant chromium (~25%), nickel (~7%), and molybdenum (~4%) levels. This steel is engineered to meet the rigorous demands of applications necessitating superior strength and exceptional corrosion resistance. It is ideally suited for chemical process equipment, the petrochemical industry, and seawater applications. Remarkable for its resistance to chloride-induced stress corrosion cracking, its elevated chromium, molybdenum, and nitrogen content ensures outstanding resistance to pitting, crevice, and general corrosion.
How Is Duplex 2507 Stainless Steel Made?
- Duplex 2507 stainless steel production follows the same sophisticated procedures as other advanced high-alloy steels. Initially, scrap steel is melted in an electric arc furnace; desired alloys are then meticulously added. The molten steel is transferred to an AOD (argon oxygen decarburization) converter, where critical processes occur, such as decarburization, sulfur refinement, and the removal of dissolved gases.
- During the AOD process, nitrogen is strategically incorporated into the steel. Subsequently, the steel advances to the ladle furnace for fine-tuning of inclusions.
- Once preliminary procedures are complete, the molten steel undergoes casting to form either large solitary ingots or continuously produced blooms. These solid steel forms are reheated, then forged or rolled to the specified thickness. A heat treatment process called solution annealing, followed by rapid water quenching, ensures a uniform internal structure.
- Fabrication of Duplex 2507 pipe materials can be accomplished via hot or cold forming techniques. For hot forming, the temperature should range between 1024 °C and 1232 °C. Post hot forming, solution annealing at 1052-1125 °C, followed by a swift water quench, is necessary. Cold forming methods, such as bending, deep drawing, extruding, and pressing, must be accompanied by subsequent heat treatment, incorporating solution annealing and quenching.
How Does Duplex 2507 Stainless Steel Differ From Duplex Steel?
- Duplex 2507 stainless steel belongs to the elite category of super duplex stainless steels. Characterized by a balanced microstructure of ferrite and austenite, duplex stainless steels offer a unique blend of superior corrosion resistance and robust mechanical strength. Different grades of duplex stainless steel vary in their corrosion resistance capabilities. While all grades exhibit high resistance to localized corrosion, including pitting, crevice corrosion, and stress corrosion cracking, the degree of resistance is grade-dependent. Categorized by their PREN (Pitting Resistance Equivalent Number), super duplex stainless steels boast a PREN range of 38 to 45, signifying their top-tier corrosion resistance.
What Are the Uses of Duplex 2507 Stainless Steel?
Some common applications of Duplex 2507 stainless steel include:
- Desalination.
- Oil and gas industry equipment, including offshore platforms, pipelines, and well casings.
- Chemical processing equipment, especially for handling corrosive chemicals.
- Pulp and paper industry, particularly bleaching process equipment.
- Petrochemical industry applications, including PVC strippers.
- Water desalination plants.
- Power industry equipment, such as flue gas desulfurization (FGD) systems.
- Marine components, including ship propellers and shafts.
- Pollution control equipment such as scrubbers.
- Fittings are essential components designed to connect and control the fluid flow within pipelines and systems. This vast category encompasses a variety of elements such as elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples, among others.
What Are the Key Advantages of Using Duplex 2507 Stainless Steel?
The significant advantages of using Duplex 2507 stainless steel are:
- Boasting a PREN of up to 43, Duplex 2507 stainless steel showcases remarkable resistance to pitting corrosion, far surpassing grades like 254SMO. Additionally, it excels in preventing other forms of corrosion, such as Stress Corrosion Cracking (SCC), crevice corrosion, and general corrosion. These attributes collectively render Duplex 2507 a versatile and reliable choice for applications in demanding environments.
- 2507 stainless steel offers double the yield strength of 300 series stainless steel. This superior strength allows for the use of thinner steel sections, thereby reducing material costs while maintaining the same load-bearing capacity.
- With double the yield and tensile strength compared to standard stainless steel, 2507 exhibits significantly enhanced wear resistance.
Standards
- ASTM/ASME ...…. A240 - UNS S32750
EURONORM...... 1.4410 - X2 Cr Ni MoN 25.7.4
AFNOR........... Z3 CN 25.06 Az
Q1: What products can you offer?
A: We provide a comprehensive range of steel types, including 310S, 316L, 304, 304L, 201, 904L, 316H, 316, and 316L 300 series stainless steels.
Additionally, we offer 400 series and duplex stainless steels such as 2205, 2304, 2101, and 2507, as well as high-nickel alloys like 904L, 800H, and 600H.
Q2. Can you manufacture products according to my drawings?
Yes, we can create products tailored to your drawings, ensuring they meet your exact requirements.
Q3. How do you manage quality control in your factory?
Quality is our top priority. We place great emphasis on maintaining stringent quality control measures from the start to the final product.
Q4. Can I request changes to the packaging and transportation methods?
Yes, we can accommodate changes to packaging and transportation according to your specifications.
However, you will be responsible for any additional costs and price differences incurred during this period.
Q5. How does your factory manage quality control?
Quality is our foremost priority. We consistently prioritize rigorous quality control throughout the entire process.
Q6. What is the delivery time frame?
A: Standard delivery is 7 to 20 working days post payment confirmation.
In urgent situations, we can expedite production to meet your needs ahead of schedule.
Q7. What are your payment terms?
A: 100% T/T in advance, Western Union for small orders.
B: 30% T/T upfront and 70% balance prior to shipment.
C: 100% Irrevocable LC at sight for large orders.
Q8: Can you produce DDQ (Deep Drawing Quality) materials?
A: Absolutely. Our materials are suitable for applications such as stainless steel pots, sinks, and bowls. Inform us of your specific use case, and we will modify the mechanical properties to meet your requirements.
Q9: How can I obtain a sample?
A: We are pleased to offer FREE samples for your evaluation and testing. For smaller requests, we can cover the courier cost, depending on the specifics.
Q10: To which countries have you exported?
A: To date, we have proudly exported our premium stainless steel materials to a diverse range of countries including Vietnam, Thailand, Turkey, Russia, Morocco, South Korea, India, Pakistan, the UAE, Ukraine, and more.
Q11: What is the best way to visit your company?
A: The most convenient way to visit us is by flying into Guangzhou Baiyun International Airport, where we will personally pick you up.
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