| 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 2507 Duplex Steel Coil Supplier in China, offering an impressive range of coil thicknesses from 0.5mm to 3.16mm. Our 2507 alloy duplex steel plates serve as a cost-effective alternative to 904L or 6% molybdenum super austenitic stainless steel. Alloy 2507 (UNS S32750) stands out as a super duplex stainless steel containing 25% chromium, 4% molybdenum, and 7% nickel. Designed for the most demanding applications, it delivers exceptional strength and corrosion resistance, making it ideal for chemical processing, petrochemical, and seawater equipment. This steel excels in resisting chloride stress corrosion cracking, boasts high thermal conductivity, and features a low coefficient of thermal expansion. Its elevated levels of chromium, molybdenum, and nitrogen ensure robust resistance against pitting, crevice, and general corrosion.
At Daxun Stainless Steel, we ensure the full traceability of each stainless steel coil through our advanced ERP system, encompassing type, specification, and origin. Committed to industry anti-counterfeiting measures, we combine cutting-edge technology with precision processing and customization, setting the benchmark for quality. Our comprehensive service approach includes tailored material selection and processing solutions before purchase, stringent monitoring during sales, and reliable after-sales support, ensuring a seamless and worry-free customer experience.
Quality, Delivery, and Inspection
- Daxun conducts thorough quality assurance tests to guarantee material suitability for any application. Our testing regimen includes flattening tests, pitting and resistance tests, mechanical tests, hardness tests, material positive identification, and expansion tests. These rigorous tests ensure the highest standards of quality and performance.
- Throughout the production process, we meticulously measure the product's diameter, thickness, and surface attributes. Our standard delivery time ranges from 7 to 15 days. For special size products, delivery may extend to 20 days.
We strictly adhere to contractually agreed delivery times.
- We support third-party agency inspections at our factory.
- We offer free samples to customers for testing.
- We facilitate on-site or video factory inspections.
Ordering Information
When placing purchase orders, please include the quantity, grade, type or category, API5L reference, thickness, width, length, and any additional requirements related to chemical composition, mechanical properties, heat treatment, testing, manufacturing process, surface coating, or end finish. Contact Daxun today; we are committed to responding to your email promptly.
Since its inception in 2003, Daxun's stainless steel business has flourished. With two decades of dynamic growth, our stainless steel materials and processing services have consistently led the Chinese industry in innovation and quality.
For over 20 years, Daxun has excelled in the international market. In 2022, we achieved a milestone with export revenues surpassing US$100 million, making us a leader in China's stainless steel trade and processing sector. We have established three robust export service bases in China, collaborating with engineering firms, steel mills, and global trading companies to enhance our service capabilities and expand our international presence.
Daxun International offers comprehensive stainless steel chain supermarket services, maintaining long-term partnerships with numerous renowned steel mills worldwide. With an inventory of 60,000 tons of standard stainless steel and 20,000 tons of specialized metals like duplex steel, nickel-based alloys, and heat-resistant steel, we guarantee the highest quality standards. Our products strictly conform to all specifications and delivery requirements.
Daxun is equipped with state-of-the-art steel processing machinery, a cutting-edge physical and chemical testing center, and advanced processing lines, including cutting, grinding, forming, beveling, welding, heat treatment, machining, and spraying. Our comprehensive facilities ensure precision and excellence in every product.
We serve a diverse array of over 30 industries, such as automotive, home appliances, elevators, new energy, vacuum semiconductors, food and beverage/bio-fermentation, petrochemicals, and energy equipment. By collaborating with steel mills and research institutions, we offer integrated services from project design and material development to optimized processing and manufacturing solutions.
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 an elite super duplex alloy with a low carbon content (up to 0.03%), around 25% chromium, 7% nickel, and 4% molybdenum. Engineered to meet the rigorous demands of applications that require both immense strength and superior corrosion resistance, Duplex 2507 is ideal for chemical process equipment, the petrochemical sector, and marine applications. Its remarkable resistance to chloride-induced stress corrosion cracking, coupled with its high chromium, molybdenum, and nitrogen content, ensures it offers outstanding protection against pitting, crevice, and general corrosion.
How Is Duplex 2507 Stainless Steel Made?
- The manufacturing of Duplex 2507 stainless steel aligns with the methods used for modern high-alloy steels. The process begins in an electric arc furnace, where scrap steel is melted and the desired alloys are added. The molten steel is then transferred to an AOD (argon oxygen decarburization) converter for critical processes like decarburization, sulfur refinement, and the removal of dissolved gases.
- During the AOD process, nitrogen is typically infused into the steel. The steel is subsequently directed to a ladle furnace for inclusion adjustments.
- Post these preliminary steps, the molten steel is moved to the casting operation, producing either single ingots (large metal blocks) or continuous blooms. These solid steel forms are then reheated and meticulously forged or rolled to the required thickness. A heat treatment called solution annealing is applied to ensure a consistent internal structure, which is then followed by a water quenching process.
- Fabrication of Duplex 2507 pipe materials can be executed using hot or cold forming techniques. For hot forming, the temperature range should be between 1024 °C and 1232 °C, followed by a solution annealing process at 1052-1125 °C minimum, and then a rapid water quench. Cold forming encompasses bending, deep drawing, extruding, and pressing, necessitating subsequent heat treatment with solution annealing and quenching.
How Does Duplex 2507 Stainless Steel Differ From Duplex Steel?
- Duplex 2507 stainless steel is classified as super duplex stainless steel. Duplex stainless steels are unique for their microstructure, which equally balances ferrite and austenite. This dual-phase structure imbues Duplex stainless steel with exceptional corrosion resistance and strong mechanical properties. However, corrosion resistance levels vary across different duplex steel grades. While all grades exhibit good resistance to localized corrosion such as pitting, crevice corrosion, and stress corrosion cracking, the exact resistance depends on the specific grade and alloy mix. Duplex stainless steels are categorized into four groups based on their PREN (Pitting Resistance Equivalent Number). Super duplex stainless steels boast a PREN number of 38 to 45, underscoring their superior performance.
What Are the Uses of Duplex 2507 Stainless Steel?
Common applications of Duplex 2507 stainless steel encompass:
- Desalination.
- Equipment for the oil and gas industry, including offshore platforms, pipelines, and well casings.
- Chemical processing apparatus, particularly for managing corrosive substances.
- Pulp and paper industry, especially in bleaching process machinery.
- Petrochemical industry components, such as PVC strippers.
- Water desalination facilities.
- Power industry devices like flue gas desulfurization (FGD) systems.
- Marine hardware, including ship propellers and shafts.
- Pollution control devices, including scrubbers.
- Fittings are essential components for seamlessly connecting and controlling fluid flow within pipelines and systems. This category encompasses a variety of crucial 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 include:
- Duplex 2507 stainless steel stands out with its extraordinary resistance to pitting corrosion, boasting a PREN of up to 43. This superior corrosion resistance surpasses that of other stainless steel grades like 254SMO. Additionally, Duplex 2507 excels in combating various forms of corrosion, including Stress Corrosion Cracking (SCC), crevice corrosion, and general corrosion. These combined corrosion-resistant qualities make Duplex 2507 an adaptable and reliable choice for a wide range of demanding applications in harsh environments.
- Duplex 2507 offers double the yield strength of 300 series stainless steel. This substantial strength advantage enables the use of thinner steel sections, resulting in lower material costs for equipment operating under identical load conditions.
- Duplex 2507 boasts double the yield and tensile strength of standard stainless steel. This remarkable strength contributes to 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 offer a broad range of steel types, including general steels like 310S, 316L, 304, 304L, 201, 904L, 316H, and 316. Additionally, we provide 400 series and duplex stainless steels such as 2205, 2304, 2101, 2507, and high-nickel alloys like 904L, 800H, and 600H.
400 series, and duplex stainless steel like 2205, 2304,2101,2507,etc. 904L, 800H, 600H high-nickel alloy.
Q2. Can you produce the products according to my own drawings?
Yes, we can manufacture products based on your drawings to ensure they meet your highest satisfaction.
Q3. How does your factory do regarding quality control?
Quality is our top priority. We place great emphasis on maintaining rigorous quality control from the beginning to the end of the manufacturing process.
Q4. Can I request to change the form of packaging and transportation?
Yes, we can accommodate changes to packaging and transportation based on your specific requirements,
but you will need to cover any additional costs and price differences that may arise during this period.
Q5. How does your factory do regarding quality control?
Quality is our top priority. We place great emphasis on maintaining rigorous quality control from the beginning to the end of the manufacturing process.
Q6. How long is the delivery time?
A: Delivery takes 7 to 20 working days after payment confirmation.
If the order is urgent, we will expedite the process in our workshop to meet your timeline.
Q7. What is your Payment?
A: 100% T/T in advance or Western Union for small orders.
B: 30% T/T upfront and the remaining 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 materials are suitable for producing stainless steel pots, sinks, bowls, and more. Simply inform us of your requirements, and we will adjust the mechanical properties to meet your specific needs.
Q9: How to get a sample?
A: We are delighted to offer FREE samples to facilitate your checking and testing requirements. For small piece requests, we are happy to cover the courier cost, subject to certain conditions.
Q10: To which countries have you exported?
A: To date, we have successfully exported our stainless steel materials to various countries including Vietnam, Thailand, Turkey, Russia, Morocco, Korea, India, Pakistan, UAE, Ukraine, and many more.
Q11: How can one visit your company?
A: You can fly to Guangzhou Baiyun International Airport, where we will be pleased to pick you up and bring you to our company.
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