| 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 your comprehensive 2507 Duplex Steel Coil Supplier in China, offering coil thicknesses from 0.5mm to 3.16mm. Our 2507 alloy duplex steel plate presents a cost-effective alternative to 904L or high-grade 6% molybdenum super austenitic stainless steel. Alloy 2507 (UNS S32750) is an exceptional super duplex stainless steel, boasting 25% chromium, 4% molybdenum, and 7% nickel. Designed for rigorous applications, it offers remarkable strength and corrosion resistance, ideal for chemical processing, petrochemical, and marine environments. Its superior resistance to chloride stress corrosion cracking, coupled with high thermal conductivity and low thermal expansion, makes it a highly efficient choice. The substantial chromium, molybdenum, and nitrogen content ensures outstanding resistance to pitting, crevice corrosion, and general corrosion.
Daxun Stainless Steel ensures comprehensive traceability of each stainless steel coil via our ERP system, meticulously tracking type, specification, and origin. We champion and encourage industry-wide anti-counterfeiting measures. Leveraging cutting-edge technology for precise processing and customization, our high standards set the industry benchmark. Our unparalleled service includes product life cycle management, expert material selection, and processing solutions pre-sale, stringent monitoring during sales, and robust post-sale service guarantees.
Quality, Delivery, Inspection
- Daxun conducts exhaustive quality assurance tests, including flattening, pitting, resistance, mechanical, hardness, material positive identification, and expansion tests. These rigorous tests certify the material's suitability for its intended applications.
- Throughout production, we meticulously measure the diameter, thickness, and surface of each product. Our standard delivery time spans 7-15 days, with exceptions for special size products extending delivery to 20 days.
Our delivery schedule is strictly aligned with the contract.
- We welcome third-party agency inspections at our factory.
- We offer free samples for customer testing.
- We facilitate both on-site and video factory inspections.
Ordering Information
Purchase orders should specify quantity, grade, type, API5L reference, thickness, width, length, and any additional requirements concerning chemical composition, mechanical properties, heat treatment, extra testing, manufacturing process, surface coating, or end finish. Contact Daxun now for a prompt response to your email inquiries.
Daxun's stainless steel journey commenced in 2003. Over two decades of dynamic growth, Daxun has positioned itself at the cutting edge of China's stainless steel industry, excelling in materials and processing.
Daxun has a rich history of over 20 years in international business. By 2022, our export revenue soared past US$100 million, ranking us among China's elite stainless steel trade and processing enterprises. We proudly operate three robust export service bases in China, partnering with engineering firms, steel mills, and global trading entities to serve international markets. Our unwavering commitment to enhancing service capabilities ensures we remain a leader in expanding our global footprint.
Daxun International offers comprehensive stainless steel chain supermarket services, maintaining long-standing partnerships with numerous esteemed steel mills worldwide. Boasting an inventory of 60,000 tons of conventional stainless steel and 20,000 tons of specialized alloys, including duplex steel, nickel-based alloys, and heat-resistant steel, we guarantee the highest quality and authenticity of our materials. Every variety, specification, and delivery weight adheres strictly to industry standards.
Daxun is equipped with state-of-the-art steel processing machinery, a specialized physical and chemical testing center, and versatile processing lines for cutting, grinding, forming, beveling, welding, heat treatment, machining, and spraying, ensuring precision and excellence in every task.
Our services span over 30 industries such as automotive, home appliances, elevators, new energy, vacuum semiconductors, food & beverage/bio-fermentation, petrochemicals, and energy equipment. Collaborating with steel mills, research institutes, and other esteemed bodies, 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 steel, distinguished by its low carbon content (up to 0.03%), high chromium (~25%), nickel (~7%), and molybdenum (~4%) composition. This specialized alloy is engineered to meet the rigorous demands of applications requiring exceptional strength and unparalleled corrosion resistance. Ideal for chemical process equipment, the petrochemical industry, and seawater applications, Duplex 2507 is highly resistant to chloride-induced stress corrosion cracking. The steel's high chromium, molybdenum, and nitrogen content provide superior defense against pitting, crevice, and general corrosion, making it a top choice for critical industrial uses.
How Is Duplex 2507 Stainless Steel Made?
- The production of Duplex 2507 stainless steel mirrors that of other contemporary high-alloy steels. The process begins in an electric arc furnace, melting scrap steel and incorporating the necessary alloying elements. The molten steel is then transferred to an AOD (argon oxygen decarburization) converter, where crucial steps such as decarburization, sulfur refinement, and the removal of dissolved gases are carried out.
- During the AOD process, nitrogen is typically added to the steel. The molten material is then directed to a ladle furnace for further inclusion adjustments.
- Subsequent to these initial stages, the steel is cast into either individual ingots or continuously cast blooms. These solid forms undergo reheating and are then forged or rolled to achieve the desired thickness. To ensure a uniform internal structure, a solution annealing heat treatment is conducted, followed by a water quenching step.
- Duplex 2507 pipe materials can be manufactured via hot or cold forming methods. For hot forming, the operational temperature range is between 1024 °C and 1232 °C. Post hot forming, a solution annealing process should be executed at a minimum temperature of 1052-1125 °C, followed by rapid water quenching. Cold forming techniques like bending, deep drawing, extruding, and pressing also necessitate a subsequent heat treatment involving solution annealing and quenching.
How Does Duplex 2507 Stainless Steel Differ From Duplex Steel?
- Duplex 2507 stainless steel falls under the category of super duplex stainless steels, which feature a balanced microstructure of ferrite and austenite phases. This unique composition imparts both high corrosion resistance and robust mechanical strength. While all duplex stainless steels exhibit good resistance to localized corrosion such as pitting, crevice corrosion, and stress corrosion cracking, the specific resistance levels vary with different grades. Duplex stainless steels are classified into four categories based on their PREN (Pitting Resistance Equivalent Number) range. Super duplex stainless steels, such as Duplex 2507, boast a PREN between 38 and 45, marking them as exceptionally resistant to pitting and crevice corrosion.
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 indispensable components for seamlessly connecting and regulating the flow of fluids in pipelines and systems. This comprehensive category includes essential items such as elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples, among others.
What Are the Compelling Advantages of Using Duplex 2507 Stainless Steel?
The unparalleled advantages of utilizing Duplex 2507 stainless steel are as follows:
- Duplex 2507 stainless steel exhibits exceptional resistance to pitting corrosion, boasting a PREN value of up to 43. This superior resistance surpasses that of other stainless steel grades, such as 254SMO. In addition to pitting corrosion, Duplex 2507 is highly resistant to stress corrosion cracking (SCC), crevice corrosion, and general corrosion. These comprehensive corrosion-resistant properties make Duplex 2507 an adaptable and reliable choice for a wide spectrum of applications in harsh and demanding environments.
- Duplex 2507 offers an impressive advantage, providing twice the yield strength of 300 series stainless steels. This significant strength allows for the use of thinner steel sections, resulting in reduced material costs while maintaining the same load levels for equipment.
- Duplex 2507 boasts double the yield and tensile strength compared to standard stainless steel, offering markedly better 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 offer a diverse range of general steel types including 310S, 316L, 304, 304L, 201, 904L, 316H, 316, and 316L 300 series.
Additionally, we provide 400 series stainless steel 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 produce the products according to my own drawings?
Yes, we can manufacture products according to your specific drawings, ensuring they meet your highest satisfaction.
Q3. How does your factory ensure quality control?
Quality is our top priority. We consistently place great emphasis on quality control from the initial stages to the final product.
Q4. Can I request changes in packaging and transportation?
Yes, we can adapt the packaging and transportation forms to meet your requirements,
but any additional costs incurred during this process must be borne by you.
Q5. How does your factory ensure quality control?
Quality is our top priority. We consistently place great emphasis on quality control from the initial stages to the final product.
Q6. What is your delivery time frame?
A: Typically, 7-20 working days after payment confirmation.
For urgent orders, we expedite the process to meet your deadlines.
Q7. What are your payment terms?
A: 100% T/T in advance, Western Union (For Small Orders).
B: 30% T/T upfront, with the remaining 70% due before shipment.
C: 100% Irrevocable LC at sight (For Large Orders).
Q8: Can you produce DDQ (Deep Drawing Quality) materials?
A: Yes, we can. Our materials are suitable for stainless steel pots, sinks, bowls, etc. Provide us with your specific applications, and we will tailor 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 sample requests, we are happy to cover the courier cost, depending on the situation.
Q10: To which countries have you exported?
A: To date, we have proudly exported our premium stainless steel materials to a diverse array of countries, including Vietnam, Thailand, Turkey, Russia, Morocco, Korea, India, Pakistan, UAE, Ukraine, and many more.
Q11: What is the process for visiting your company?
A: Simply book a flight to Guangzhou Baiyun International Airport, and we will gladly arrange to pick you up upon arrival.
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