| 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 premier 2507 Duplex Steel Coil Supplier in China, providing coil thicknesses ranging from 0.5mm to 3.16mm. Our 2507 alloy duplex steel plate offers a cost-effective alternative to 904L or 6% molybdenum super austenitic stainless steel. Alloy 2507 (UNS S32750) is a super duplex stainless steel composed of 25% chromium, 4% molybdenum, and 7% nickel, designed for rigorous applications necessitating exceptional strength and corrosion resistance. 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 superior resistance to pitting, crevice corrosion, and general corrosion.
At Daxun Stainless Steel, we ensure complete traceability of each stainless steel coil through our ERP system, encompassing type, specification, and origin, and we are staunch advocates of industry anti-counterfeiting measures. Leveraging cutting-edge technology for processing and customization, we set the industry benchmark with our high precision and unparalleled quality. Our comprehensive service framework includes product lifecycle management, expert material selection, and processing solutions before sales, stringent monitoring during sales, and reliable post-sale service guarantees.
Quality, Delivery, Inspection
- Daxun implements an extensive array of quality assurance tests. These encompass flattening tests, pitting and resistance tests, mechanical tests, hardness tests, material positive identification, and expansion tests, ensuring that every material meets the specific requirements for its intended application.
- Throughout the production process, we meticulously measure the diameter, thickness, and surface of each product. Our standard delivery timeframe is 7-15 days; however, for special size products, this may extend to 20 days.
Our delivery schedule strictly adheres to the contractual terms.
- We welcome customer third-party agencies to inspect our factory.
- We offer free samples for customer testing.
- We support on-site or video factory inspections.
Ordering Information
Purchase orders should specify quantity, grade, type or category, API5L reference, thickness, width, length, and any pertinent attachments or additional requirements related to chemical composition, mechanical properties, heat treatment, additional testing, manufacturing process, surface coating, or end finish. Contact Daxun now, and we will respond to your email promptly.
Daxun's journey in the stainless steel industry began in 2003. Over the past two decades, our rapid development has positioned us as leaders in China's stainless steel materials and processing sector.
With over 20 years of experience in the global market, Daxun's export revenue surpassed US$100 million in 2022, placing us among China's elite in stainless steel trade and processing. We proudly operate three export service bases within China and collaborate with engineering firms, steel mills, and international trading companies to fortify our presence in overseas markets. Our commitment to excellence drives us to continuously enhance our service capabilities.
Daxun International offers comprehensive stainless steel chain supermarket services, maintaining long-standing partnerships with renowned steel mills globally. We stock 60,000 tons of standard stainless steel and 20,000 tons of specialized metals like duplex steel, nickel-based alloys, and heat-resistant steel. Our stainless steel materials are synonymous with reliability and authenticity, adhering to stringent specifications, varieties, and delivery weights.
Daxun boasts an array of advanced steel processing equipment, a state-of-the-art physical and chemical testing center, and diverse processing lines, 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. By collaborating with steel mills and research institutes, we provide holistic services from project design and material development to processing and manufacturing 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 top-tier, super duplex material renowned for its exceptional low carbon content (up to 0.03%), combined with chromium (~25%), nickel (~7%), and molybdenum (~4%). Engineered to meet the stringent demands of applications that require outstanding strength and high corrosion resistance, Duplex 2507 is ideally suited for chemical process equipment, the petrochemical industry, and seawater systems. Its superior resistance to chloride-induced stress corrosion cracking, coupled with high levels of chromium, molybdenum, and nitrogen, ensures excellent defense against pitting, crevice, and general corrosion.
How Is Duplex 2507 Stainless Steel Made?
- The production of Duplex 2507 stainless steel mirrors that of other advanced high-alloy steels. The process begins with melting scrap steel in an electric arc furnace and adding the necessary alloys. The molten steel is then transferred to an AOD (argon oxygen decarburization) converter, where critical steps like decarburization, sulfur refinement, and the removal of dissolved gases take place.
- During the AOD process, nitrogen is incorporated into the steel. The material is subsequently moved to the ladle furnace, where inclusions are precisely modified.
- Following these initial stages, the molten steel proceeds to the casting phase, producing either individual ingots (large metal blocks) or continuously cast blooms. These solid steel forms are further processed through reheating and forging or rolling to the required thickness. To ensure a uniform internal structure, a solution annealing heat treatment is performed, followed by rapid water quenching.
- Fabrication of Duplex 2507 pipe materials can be achieved through both hot and cold forming techniques. For hot forming, the ideal temperature range is between 1024°C and 1232°C. Post hot forming, a solution annealing process at 1052-1125°C is recommended, followed by swift water quenching. Cold forming processes, such as bending, deep drawing, extruding, and pressing, necessitate subsequent heat treatment, including solution annealing and quenching.
How Does Duplex 2507 Stainless Steel Differ From Duplex Steel?
- Duplex 2507 stainless steel stands out as a super duplex stainless steel, featuring a balanced microstructure of ferrite and austenite. This dual-phase composition combines the best attributes of both phases, offering unparalleled corrosion resistance and mechanical strength. While various duplex steel grades present different levels of corrosion resistance, Duplex 2507 excels in pitting, crevice, and stress corrosion cracking resistance. Duplex stainless steels are categorized into four groups based on their PREN (Pitting Resistance Equivalent Number) range, with super duplex stainless steel like Duplex 2507 boasting a PREN between 38 and 45.
What Are the Uses of Duplex 2507 Stainless Steel?
Duplex 2507 stainless steel finds its applications in several demanding industries:
- Desalination.
- Oil and gas industry equipment, including offshore platforms, pipelines, and well casings.
- Chemical processing equipment, particularly for handling corrosive chemicals.
- Pulp and paper industry, especially 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 the essential building blocks for ensuring seamless fluid connectivity and control within pipelines and systems. Our selection encompasses a variety of components, including 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 boasts exceptional resistance to pitting corrosion, with a PREN of up to 43, superior to grades like 254SMO. It also offers robust defense against other corrosion forms such as Stress Corrosion Cracking (SCC), crevice corrosion, and general corrosion. This remarkable corrosion resistance makes Duplex 2507 an adaptable and reliable choice for numerous applications in challenging environments.
- With Duplex 2507, you benefit from double the yield strength of 300-class stainless steel. This enhanced strength translates to thinner steel sections and significant material cost savings for equipment operating under equivalent load conditions.
- Duplex 2507's yield and tensile strength are double that of standard stainless steel, leading to superior 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 can offer general steel types like 310S, 316L, 304, 304L, 201, 904L, 316H, and 316. Additionally, we provide 300 and 400 series stainless steel, including duplex grades such as 2205, 2304, 2101, 2507, 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 to your exact specifications, ensuring they meet your highest satisfaction.
Q3. How does your factory do regarding quality control?
Quality is our top priority. We consistently uphold stringent quality control measures from start to finish.
Q4. Can I request to change the form of packaging and transportation?
Yes, we can modify the packaging and transportation methods to suit your requirements.
However, you will be responsible for any additional costs incurred during this period, including the spreads.
Q5. How does your factory do regarding quality control?
Quality is our top priority. We consistently uphold stringent quality control measures from start to finish.
Q6. How long is the delivery time?
A: Standard delivery time ranges from 7 to 20 working days post payment confirmation.
If the order is urgent, we will expedite the production process to meet your deadline.
Q7. What is your Payment?
A: 100% T/T advance, 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 stainless steel pots, sinks, bowls, and more. Inform us of your specific usage, and we will tailor the mechanical properties to meet your requirements.
Q9: How to get a sample?
A: We are pleased to offer FREE samples for your evaluation and testing. If you need a small piece, we can cover the courier cost, subject to certain conditions.
Q10: Which countries have you exported to?
A: To date, we have successfully shipped our premium stainless steel materials to a diverse range of countries including Vietnam, Thailand, Turkey, Russia, Morocco, South Korea, India, Pakistan, UAE, Ukraine, and many more.
Q11: How can I visit your company?
A: You can fly to Guangzhou Baiyun International Airport, and we will arrange for a pick-up service to bring you to our company.
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