| 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 full-service 2507 Duplex Steel Coil Supplier in China, offering coil thicknesses ranging from 0.5mm to 3.16mm. 2507 alloy duplex steel plate is a cost-effective alternative to more expensive alloys like 904L or 6% molybdenum super austenitic stainless steel. Alloy 2507 (UNS S32750) is a superior duplex stainless steel with an impressive composition of 25% chromium, 4% molybdenum, and 7% nickel. It is designed for demanding applications requiring exceptional strength and corrosion resistance, such as chemical processing, petrochemical, and seawater equipment. This steel offers remarkable resistance to chloride stress corrosion cracking, boasts high thermal conductivity, and a low coefficient of thermal expansion. The high levels of chromium, molybdenum, and nitrogen ensure excellent resistance to pitting, crevice corrosion, and overall corrosion.
Daxun Stainless Steel ensures the full traceability of each stainless steel coil through an advanced ERP system, detailing type, specification, and origin, while strongly advocating and implementing anti-counterfeiting measures within the industry. Leveraging cutting-edge technology for processing and customization, Daxun sets the industry benchmark with high precision and superior quality. Our service philosophy encompasses comprehensive product life cycle management, offering expert material selection and processing solutions before sales, stringent monitoring during sales, and reliable service guarantees after sales.
Quality, Delivery, Inspection
- Daxun conducts rigorous quality assurance tests to guarantee material suitability for required applications. These tests include flattening, pitting and resistance, mechanical, hardness, material positive identification, and expansion tests. Each test is meticulously carried out to ensure the highest standards are met.
- During production, we meticulously measure the diameter, thickness, and surface of each product. Our standard delivery time is 7-15 days, extending to 20 days for special size products. This ensures timely delivery without compromising on quality.
Our delivery time strictly adheres to the contractual agreement.
- We support customer third-party agencies for on-site factory inspections.
- We offer free samples to customers for testing and evaluation.
- We support on-site or video factory inspections to assure product quality.
Ordering Information
Purchase orders should specify quantity, grade, type or category, API5L reference, thickness, width, length, and any applicable 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 illustrious journey in the stainless steel industry commenced in 2003. Over two decades of dynamic growth have solidified its standing as a leader in the Chinese market, consistently staying at the forefront of innovation and quality.
For over 20 years, Daxun has been expanding its overseas footprint. By 2022, our export revenue exceeded a remarkable US$100 million, placing us among China's elite stainless steel trade and processing firms. We have strategically established three export service bases in China and built strong partnerships with engineering firms, steel mills, and international trading companies to serve global markets. Our commitment to service excellence drives us to continually enhance our capabilities and expand our international presence.
Daxun International offers comprehensive stainless steel chain supermarket services, maintaining long-term alliances with dozens of renowned steel mills worldwide. We boast an impressive inventory of 60,000 tons of standard stainless steel and 20,000 tons of specialized metals, including duplex steel, nickel-based alloys, and heat-resistant steel. Quality is our hallmark, with all materials strictly adhering to global standards in variety, specification, and delivery weight.
Equipped with advanced steel processing equipment, a state-of-the-art physical and chemical testing center, and dedicated processing lines for cutting, grinding, forming, beveling, welding, heat treatment, machining, and spraying, Daxun stands as a beacon of steel processing excellence.
Our services span over 30 diverse industries, including automotive, home appliances, elevators, new energy, vacuum semiconductors, food and beverage/bio-fermentation, petrochemicals, and energy equipment. In collaboration with steel mills, research institutes, and other esteemed organizations, we deliver end-to-end 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 superior grade of super duplex steel characterized by its low carbon content (up to 0.03%) and high chromium (~25%), nickel (~7%), and molybdenum (~4%) levels. Engineered for applications that demand exceptional strength and corrosion resistance, Duplex 2507 is ideal for chemical process equipment, petrochemical industries, and seawater systems. Its remarkable resilience to chloride-induced stress corrosion cracking, combined with high chromium, molybdenum, and nitrogen content, ensures outstanding resistance to pitting, crevice, and general corrosion.
How Is Duplex 2507 Stainless Steel Made?
- Duplex 2507 stainless steel is produced using advanced methods similar to those for other high-alloy steels. The process begins in an electric arc furnace where scrap steel is melted and alloyed. The molten steel is then refined in an AOD (argon oxygen decarburization) converter, undergoing critical processes such as decarburization, sulfur refinement, and gas elimination.
- During the AOD process, nitrogen is typically added to the steel. The refined steel progresses to the ladle furnace for final adjustment of the inclusions.
- After these initial steps, molten steel is cast into ingots or continuously produced blooms. These solid blooms or ingots are reheated and forged or rolled to precise thickness. To ensure a homogeneous internal structure, a heat treatment known as solution annealing is applied, followed by rapid water quenching.
- Duplex 2507 pipe materials can be fabricated through hot or cold forming processes. For hot forming, the material is heated between 1024 °C and 1232 °C, followed by solution annealing at 1052-1125 °C and a rapid water quench. Cold forming processes like bending, deep drawing, extruding, and pressing also require 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 feature a microstructure with equal parts ferrite and austenite, blending the advantageous properties of both. This unique combination offers high corrosion resistance and superior mechanical strength. However, different grades of duplex steel have varying levels of corrosion resistance. While they generally resist localized corrosion such as pitting, crevice corrosion, and stress corrosion cracking, the degree of resistance is dependent on the specific grade and alloy composition. Duplex stainless steels are categorized into four groups based on their PREN (Pitting Resistance Equivalent Number) range. Super duplex stainless steels have a PREN ranging from 38 to 45.
What Are the Uses of Duplex 2507 Stainless Steel?
Common applications of Duplex 2507 stainless steel include:
- Desalination.
- Oil and gas industry equipment, including offshore platforms, pipelines, and well casings.
- Chemical processing equipment, particularly for managing corrosive chemicals.
- Pulp and paper industry, especially bleaching process equipment.
- Petrochemical industry applications, such as PVC strippers.
- Water desalination plants.
- Power industry equipment, including flue gas desulfurization (FGD) systems.
- Marine components, like ship propellers and shafts.
- Pollution control equipment, such as scrubbers.
- Fittings are indispensable components used to connect and regulate the flow of fluids in pipelines and various systems. This includes a wide array of essential items 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 boasts exceptional resistance to pitting corrosion, with a PREN value up to 43, surpassing other stainless steel grades like 254SMO. Additionally, it exhibits remarkable resistance to stress corrosion cracking (SCC), crevice corrosion, and general corrosion. These comprehensive corrosion-resistant characteristics make Duplex 2507 an exceptionally versatile and reliable choice for demanding applications in harsh environments.
- Duplex 2507 delivers double the yield strength compared to 300 series stainless steel. This significant strength advantage allows for the use of thinner steel sections, resulting in reduced material costs for equipment operating under the same load conditions.
- With double the yield and tensile strength of standard stainless steel, Duplex 2507 offers vastly improved 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 variety of steel types including 310S, 316L, 304, 304L, 201, 904L, 316H, and 316. Additionally, we provide 300 and 400 series, duplex stainless steels like 2205, 2304, 2101, 2507, and high-nickel alloys such as 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 according to your drawings, ensuring they meet your highest satisfaction.
Q3. How does your factory do regarding quality control?
Quality is our top priority. We place significant emphasis on 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 modify the packaging and transportation form according to your requests.
However, you will need to cover any additional costs and the price differences incurred during this period.
Q5. How does your factory do regarding quality control?
Quality is our top priority. We place significant emphasis on quality control from the beginning to the end of the manufacturing process.
Q6. How long is the delivery time?
A: 7~20 working days from the confirmation of payment.
If the order is urgent, we can expedite the production 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 upfront with the balance 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, etc. Simply inform us of your specific usage, and we will adjust the mechanical properties to meet your requirements.
Q9: How to get a sample?
A: We are pleased to offer FREE samples for your inspection and testing. If you require a small piece, we may even cover the courier cost, depending on the circumstances.
Q10: To which countries have you exported?
A: To date, we have successfully exported our premium stainless steel materials to a diverse array of countries, including Vietnam, Thailand, Turkey, Russia, Morocco, Korea, India, Pakistan, UAE, Ukraine, and more.
Q11: How can I visit your company?
A: Simply take a flight to Guangzhou Baiyun International Airport, and we will gladly arrange for your pick-up from there.
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