| 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 2507 Duplex Steel Coil Supplier in China, boasting coil thicknesses from 0.5mm to 3.16mm. The 2507 alloy duplex steel plate offers a cost-effective alternative to 904L or 6% molybdenum super austenitic stainless steels. Alloy 2507 (UNS S32750) is a super duplex stainless steel containing 25% chromium, 4% molybdenum, and 7% nickel, engineered for the toughest applications demanding superior strength and corrosion resistance. Ideal for chemical processing, petrochemical, and seawater equipment, this steel excels in resisting chloride stress corrosion cracking. Its high thermal conductivity and low coefficient of thermal expansion, coupled with elevated chromium, molybdenum, and nitrogen levels, ensure exceptional resistance to pitting, crevice, and general corrosion.
Daxun Stainless Steel ensures complete traceability for each stainless steel coil via an advanced ERP system, detailing type, specification, and origin. Strongly advocating industry anti-counterfeiting, Daxun leverages cutting-edge technology for processing and customization, setting high precision and quality as industry benchmarks. Our service model spans the entire product lifecycle, offering expert material selection and processing solutions pre-sale, rigorous monitoring during sales, and reliable post-sale service guarantees.
Quality, delivery, inspection
- Daxun conducts extensive quality assurance tests, including flattening, pitting resistance, mechanical, hardness, material positive identification, and expansion tests. These comprehensive assessments ensure the material's suitability for its intended applications.
- Throughout the production process, we meticulously measure the diameter, thickness, and surface of each product. Our standard delivery time is 7-15 days, with a possible extension to 20 days for special size products.
Our delivery time strictly adheres to the contract terms.
- Customers are welcome to engage third-party agencies for factory inspections.
- We offer free samples to customers for testing purposes.
- We support both on-site and video factory inspections.
Ordering Information
Purchase orders should detail the quantity, grade, type or category, API5L reference, thickness, width, length, and any relevant attachments or additional requirements regarding chemical composition, mechanical properties, heat treatment, extra testing, manufacturing process, surface coating, or end finish. Contact Daxun now for a prompt email response.
Daxun's stainless steel journey commenced in 2003. Over two decades of dynamic growth, Jiangsu Daxun Alloy Co., Ltd. has soared to the pinnacle of China's stainless steel industry, setting benchmarks in materials and processing excellence.
With over two decades in the international market, Daxun's 2022 export revenue eclipsed US$100 million, positioning it among China's elite stainless steel trade and processing entities. By establishing three strategic export service bases in China, Daxun partners with engineering firms, steel mills, and global trading companies to cater to international markets, continually enhancing service delivery and market penetration.
Daxun International offers an unparalleled stainless steel chain supermarket service, maintaining robust partnerships with numerous esteemed steel mills worldwide. Boasting an inventory of 60,000 tons of standard stainless steel and 20,000 tons of specialized metals such as duplex steel, nickel-based alloys, and heat-resistant steel, Daxun International guarantees impeccable quality and authenticity. Our diverse range, precise specifications, and stringent delivery standards ensure exemplary performance.
Daxun is equipped with cutting-edge steel processing machinery and a state-of-the-art physical and chemical testing center. Our extensive processing capabilities encompass cutting, grinding, forming, beveling, welding, heat treatment, machining, and spraying, ensuring comprehensive and precise fabrication services.
Our services span over 30 industries, including automotive, home appliances, elevators, new energy, vacuum semiconductors, food and beverage/bio-fermentation, petrochemicals, and energy equipment. Collaborating with steel mills and research institutions, we offer an integrated service model from project design and material development to optimized processing and manufacturing.
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 premium super duplex steel with exceptionally low carbon content (up to 0.03%), and a robust alloy composition of chromium (~25%), nickel (~7%), and molybdenum (~4%). Engineered to meet the rigorous demands of applications necessitating superior strength and unmatched corrosion resistance, Duplex 2507 is ideal for use in chemical process equipment, the petrochemical industry, and seawater systems. Its formidable resistance to chloride-induced stress corrosion cracking, coupled with high levels of chromium, molybdenum, and nitrogen, ensures exceptional protection against pitting, crevice corrosion, and general corrosion.
How Is Duplex 2507 Stainless Steel Made?
- Duplex 2507 stainless steel is crafted through advanced processes similar to those used for other high-alloy steels. The journey begins in an electric arc furnace where scrap steel is melted and enhanced with specific alloys. Once liquefied, the steel is transferred to an AOD (argon oxygen decarburization) converter, where crucial steps such as decarburization, sulfur refinement, and the expulsion of dissolved gases take place.
- During the AOD process, nitrogen is typically added to the molten steel. The enhanced steel is then moved to the ladle furnace, where adjustments to inclusions are meticulously made.
- Following these initial stages, the molten steel transitions to the casting phase, producing either solitary ingots (large metal blocks) or continuously cast blooms. These solid steel forms are further refined through reheating and forging or rolling to the desired thickness. To ensure a consistent internal structure, a solution annealing heat treatment is performed, followed by a rapid water quenching process.
- Duplex 2507 pipe materials can be manufactured using both hot and cold forming techniques. For hot forming, the temperature range should be between 1024 °C and 1232 °C. Post hot forming, a solution annealing process at a minimum temperature of 1052-1125 °C is essential, followed by a swift water quench. Cold forming methods, such as bending, deep drawing, extrusion, and pressing, must be followed by a heat treatment, including solution annealing and quenching.
How Does Duplex 2507 Stainless Steel Differ From Duplex Steel?
- Duplex 2507 stainless steel is classified as a super duplex stainless steel, a unique category of stainless steels that feature a microstructure containing both ferrite and austenite in nearly equal measures. This structure amalgamates the advantageous properties of both phases, delivering high corrosion resistance and superior mechanical strength. However, different grades of duplex steel offer varying levels of corrosion resistance. Despite their overall resilience against localized corrosion such as pitting, crevice corrosion, and stress corrosion cracking, the degree of resistance is contingent on the grade and alloy composition. Duplex stainless steels are categorized into four types based on their PREN (Pitting Resistance Equivalent Number) range, with super duplex stainless steel exhibiting a PREN number between 38 and 45.
What Are the Uses of Duplex 2507 Stainless Steel?
Common applications of Duplex 2507 stainless steel span diverse industries, including:
- Desalination.
- Oil and gas industry equipment, encompassing offshore platforms, pipelines, and well casings.
- Chemical processing equipment, particularly for handling highly corrosive chemicals.
- Pulp and paper industry, especially in bleaching process equipment.
- Petrochemical industry applications, such as PVC strippers.
- Water desalination plants.
- Power industry equipment, including flue gas desulfurization (FGD) systems.
- Marine components, covering ship propellers and shafts.
- Pollution control equipment, like scrubbers.
- Fittings are indispensable components for seamlessly connecting and precisely controlling the flow of fluids in pipelines and systems. These include essential elements such as elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples, ensuring optimal performance and reliability.
What Are the Advantages of Using Duplex 2507 Stainless Steel?
The outstanding advantages of using Duplex 2507 stainless steel include:
- Duplex 2507 stainless steel boasts superior resistance to pitting corrosion, with a PREN of up to 43, surpassing grades like 254SMO. It also exhibits exceptional resistance to other forms of corrosion, including Stress Corrosion Cracking (SCC), crevice corrosion, and general corrosion. These comprehensive corrosion-resistant properties position Duplex 2507 as a versatile and dependable choice for a myriad of demanding applications in harsh environments.
- Duplex 2507 offers double the yield strength of 300 series stainless steel. This remarkable strength advantage allows for the design of thinner steel sections, resulting in significant material cost savings for equipment operating under similar load conditions.
- With double the yield and tensile strength of standard stainless steel, Duplex 2507 significantly enhances wear resistance, ensuring long-lasting durability.
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 offer a wide range of general steel types, including 310S, 316L, 304, 304L, 201, 904L, 316H, 316, 316L 300, and more.
Additionally, we provide 400 series stainless steels and duplex stainless steels such as 2205, 2304, 2101, 2507, and high-nickel alloys like 904L, 800H, and 600H.
Q2. Can you produce the products according to my own drawings?
Yes, we can manufacture products tailored to your drawings, ensuring they meet your utmost satisfaction.
Q3. How does your factory do regarding quality control?
Quality is our top priority. We place immense importance on quality control, meticulously overseeing it from the beginning to the end of the production process.
Q4. Can I request to change the form of packaging and transportation?
Yes, we can modify the packaging and transportation methods according to your specific request,
but you will need to cover any additional costs and price differences incurred during this period.
Q5. How does your factory do regarding quality control?
Quality is paramount. We are committed to stringent quality control measures throughout the entire production process.
Q6. How long is the delivery time?
A: 7~20 working days after confirming payment.
For urgent orders, we will expedite the process to meet your deadlines.
Q7. What is your Payment?
A: 100% T/T in advance, Western Union (for small orders).
B: 30% T/T with the balance of 70% before shipment.
C: 100% Irrevocable LC at sight (for large orders).
Q8: Can you make DDQ (Deep Drawing Quality)?
A: Yes, we can. Our material is suitable for stainless steel pots, sinks, bowls, and more. Share your specific usage requirements, and we will adjust the mechanical properties accordingly to meet your needs.
Q9: How to get a sample?
A: We are pleased to offer FREE samples for your assessment and testing needs. For smaller sample pieces, we are happy to cover the courier costs, subject to certain conditions.
Q10: To which countries have you exported your products?
A: To date, we have proudly exported our high-quality stainless steel materials to various countries, including Vietnam, Thailand, Turkey, Russia, Morocco, South Korea, India, Pakistan, the UAE, Ukraine, and many more.
Q11: How can I visit your company?
A: You can visit us by flying to Guangzhou Baiyun International Airport, where we will be delighted to pick you up and ensure a comfortable journey to our company.
Audited Supplier 
){kind=link}
){kind=link}