| 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 |
A Global Leader in Stainless Steel Coil Fabrication Services
Daxun is a premier 2507 Duplex Steel Coil Supplier in China, offering an extensive range of coil thicknesses from 0.5mm to 3.16mm. Our 2507 alloy duplex steel plate is a cost-effective alternative to 904L or 6% molybdenum super austenitic stainless steel. Alloy 2507 (UNS S32750) is a high-performance super duplex stainless steel featuring 25% chromium, 4% molybdenum, and 7% nickel. Engineered for demanding applications requiring exceptional strength and corrosion resistance, it is ideal for chemical processing, petrochemical, and seawater equipment. This steel exhibits outstanding resistance to chloride stress corrosion cracking, high thermal conductivity, and a low coefficient of thermal expansion. The elevated levels of chromium, molybdenum, and nitrogen ensure robust resistance to pitting, crevice corrosion, and general corrosion.
At Daxun Stainless Steel, we achieve full traceability of each stainless steel coil via our advanced ERP system, tracking type, specification, and origin. We strongly advocate and encourage industry anti-counterfeiting measures. Leveraging state-of-the-art technology for processing and customization, we set the industry benchmark for high precision and superior quality. Our comprehensive service includes product life cycle management, expert material selection and processing solutions before sales, stringent monitoring during sales, and reliable service guarantees after sales.
Quality, Delivery, Inspection
- Daxun conducts thorough quality assurance tests to ensure material suitability for required applications. These tests include flattening, pitting and resistance, mechanical, hardness, material positive identification, expansion, and more. Each test meticulously verifies that the material meets stringent standards.
- Throughout the production process, we meticulously measure the diameter, thickness, and surface of each product. Our standard delivery time is 7-15 days. For special size products, the delivery time may extend to 20 days.
We strictly adhere to contract terms for delivery time.
- We welcome customer third-party agencies for factory inspections.
- We offer free samples to customers for testing.
- We support both on-site and video factory inspections.
Ordering Information
Purchase orders should specify quantity, grade, type or category, API5L reference, thickness, width, length, and any additional requirements related to chemical composition, mechanical properties, heat treatment, extra testing, manufacturing process, surface coating, or end finish. Contact Daxun today, and we will respond to your email promptly.
Since 2003, Daxun has been a trailblazer in the stainless steel industry. Over the past two decades, we have transformed and grown exponentially, becoming a leading name in China's stainless steel materials and processing sector.
With a robust presence in the global market for over 20 years, Daxun surpassed an export revenue of US$100 million in 2022, cementing its position among China's elite stainless steel trade and processing companies. We have strategically established three export service bases in China and forged strong partnerships with engineering firms, steel mills, and international trading companies. Our relentless pursuit of excellence drives us to continually enhance our service capabilities and expand our footprint in overseas markets.
Daxun International offers comprehensive stainless steel chain supermarket services through enduring collaborations with renowned steel mills worldwide. We boast an impressive inventory of 60,000 tons of general stainless steel and 20,000 tons of specialty metals such as duplex steel, nickel-based alloys, and heat-resistant steel. Our stainless steel materials adhere to the highest standards of quality and authenticity, ensuring that varieties, specifications, and delivery weights meet stringent criteria.
Equipped with state-of-the-art steel processing machinery and a dedicated physical and chemical testing center, Daxun offers a wide array of processing services, including cutting, grinding, forming, beveling, welding, heat treatment, machining, and spraying.
Our services span more than 30 industries, such as automotive, home appliances, elevators, new energy, vacuum semiconductors, food and beverage/bio-fermentation, petrochemicals, and energy equipment sectors. Collaborating with steel mills and research institutions, we provide comprehensive 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 steel renowned for its exceptional strength and superior corrosion resistance. This material boasts a low carbon content (up to 0.03%), along with significant amounts of chromium (~25%), nickel (~7%), and molybdenum (~4%). Engineered for demanding applications, Duplex 2507 is ideal for use in chemical process equipment, the petrochemical industry, and seawater environments. Its robust resistance to chloride-induced stress corrosion cracking is unparalleled. Thanks to its high chromium, molybdenum, and nitrogen content, this steel excels against pitting, crevice corrosion, and general corrosion.
How Is Duplex 2507 Stainless Steel Made?
- Manufacturing Duplex 2507 stainless steel follows procedures similar to those of other high-alloy steels. The process begins in an electric arc furnace where scrap steel is melted and alloy elements are introduced. The molten steel is then transferred to an AOD (argon oxygen decarburization) converter. During this critical phase, processes such as decarburization, sulfur refinement, and the removal of dissolved gases take place.
- In the AOD process, nitrogen is typically added to the steel. The molten steel then moves to a ladle furnace for inclusion adjustment.
- Following these initial steps, the steel is cast into either solitary ingots or continuously produced blooms. These solidified forms are further processed through reheating and forging or rolling to achieve the required thickness. To ensure a uniform internal structure, the material undergoes solution annealing, followed by rapid water quenching.
- Duplex 2507 pipe materials can be shaped using either hot or cold forming techniques. For hot forming, temperatures should range between 1024 °C and 1232 °C. Post hot forming, a solution annealing process at 1052-1125 °C, followed by quick water quenching, is essential. Cold forming methods-such as bending, deep drawing, extruding, and pressing-also require subsequent 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, characterized by a microstructure containing roughly equal portions of ferrite and austenite. This balanced composition delivers high mechanical strength and outstanding corrosion resistance. Different grades of duplex steels offer varying levels of localized corrosion resistance, including pitting, crevice corrosion, and stress corrosion cracking. Duplex stainless steels are categorized into four types based on their PREN (Pitting Resistance Equivalent Number) range, with super duplex stainless steel boasting a PREN number between 38 and 45.
What Are the Uses of Duplex 2507 Stainless Steel?
Common applications of Duplex 2507 stainless steel include:
- Desalination facilities.
- Oil and gas industry equipment, such as offshore platforms, pipelines, and well casings.
- Chemical processing equipment designed for corrosive chemicals.
- Pulp and paper industry machinery, especially for bleaching processes.
- Petrochemical industry devices, like PVC strippers.
- Water desalination plants.
- Power industry gear, including flue gas desulfurization (FGD) systems.
- Marine components, like ship propellers and shafts.
- Pollution control equipment, such as scrubbers.
- Fittings are vital components for seamlessly connecting and efficiently controlling the flow of fluids in pipelines and systems. This encompasses a wide range of elements such as elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples, among others.
What Are the Advantages of Using Duplex 2507 Stainless Steel?
The advantages of using Duplex 2507 stainless steel are substantial and multifaceted:
- Duplex 2507 stainless steel is renowned for its exceptional resistance to pitting corrosion, boasting a PREN of up to 43. This superior corrosion resistance outperforms other stainless steel grades like 254SMO. Additionally, Duplex 2507 demonstrates remarkable resistance to various forms of corrosion, including Stress Corrosion Cracking (SCC), crevice corrosion, and general corrosion. These qualities make Duplex 2507 an adaptable and reliable choice for diverse applications in harsh environments.
- Duplex 2507 offers twice the yield strength of 300 series stainless steel. This significant strength advantage allows for the use of thinner steel sections, resulting in lower material costs for equipment operating under identical load conditions.
- With double the yield and tensile strength compared to standard stainless steel, Duplex 2507 provides 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 general steel types including 310S, 316L, 304, 304L, 201, 904L, 316H, 316, 316L 300, and
400 series. Additionally, we offer duplex stainless steel variants such as 2205, 2304, 2101, 2507, and high-nickel alloys like 904L, 800H, 600H.
Q2. Can you produce the products according to my own drawings?
Yes, we can manufacture products tailored to your drawings to ensure the highest level of satisfaction.
Q3. How does your factory handle quality control?
Quality is our utmost priority. We meticulously control quality from the beginning to the end of the production process.
Q4. Can I request changes to the packaging and transportation form?
Yes, we can modify the packaging and transportation form according to your request,
but you will need to cover any additional costs and potential price differences incurred during this period.
Q5. How does your factory ensure quality control?
Quality is our top priority. We rigorously control quality from start to finish.
Q6. What is the delivery time?
A: Delivery time ranges from 7 to 20 working days after payment confirmation.
If the order is urgent, we will expedite the production process to meet your requirements.
Q7. What are your payment terms?
A: 100% T/T in advance, Western Union (For small orders)
B: 30% T/T in advance and 70% balance before shipment
C: 100% Irrevocable LC at sight (For large orders)
Q8: Can you produce DDQ (Deep Drawing Quality) material?
A: Yes, we can. Our materials are suitable for producing stainless steel pots, sinks, bowls, etc. Just inform us of your specific usage, and we will adjust the mechanical properties to meet your requirements.
Q9: How can I obtain a sample?
A: We are delighted to offer FREE samples for your evaluation and testing. For small pieces, we are even able to cover the courier costs, depending on the specifics of your request.
Q10: Which countries have you exported to?
A: To date, we have successfully exported our high-quality stainless steel materials to numerous countries, including Vietnam, Thailand, Turkey, Russia, Morocco, Korea, India, Pakistan, the UAE, Ukraine, and many more.
Q11: How can I visit your company?
A: Simply take a flight to Guangzhou Baiyun International Airport, and we will arrange for you to be picked up and brought directly to our company.
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