| 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 supplier of 2507 Duplex Steel Coil in China, offering thicknesses from 0.5mm to 3.16mm. The 2507 alloy duplex steel plate is a cost-effective alternative to 904L or 6% molybdenum super austenitic stainless steel. Alloy 2507 (UNS S32750) boasts a composition of 25% chromium, 4% molybdenum, and 7% nickel, making it ideal for demanding applications that require superior strength and corrosion resistance, such as chemical processing, petrochemical, and seawater equipment. This steel exhibits exceptional resistance to chloride stress corrosion cracking, high thermal conductivity, and a low coefficient of thermal expansion. Its high chromium, molybdenum, and nitrogen content ensure excellent resistance to pitting, crevice corrosion, and general corrosion.
Daxun Stainless Steel ensures complete traceability of each stainless steel coil through an advanced ERP system, documenting type, specification, and origin. We advocate and encourage anti-counterfeiting within the industry. Leveraging cutting-edge technology for precision processing and customization, Daxun sets the industry benchmark for quality. In terms of service, we champion product life cycle management, offering expert material selection and processing solutions pre-sale, rigorous monitoring during sales, and dependable service guarantees post-sale.
Quality, Delivery, Inspection
- Daxun conducts comprehensive quality assurance tests, including flattening, pitting resistance, mechanical, hardness, positive material identification, and expansion tests. These rigorous evaluations ensure that the material meets all application requirements.
- Throughout production, we meticulously measure the product's diameter, thickness, and surface finish. Our standard delivery time is 7-15 days, extending up to 20 days for special size products.
Our delivery schedule is strictly adhered to as per the contract.
- We welcome inspections by third-party agencies at our factory.
- We offer free samples to customers for testing purposes.
- We support on-site or video factory inspections for our clients.
Ordering Information
Purchase orders should detail the quantity, grade, type or category, API5L reference, thickness, width, length, and any additional requirements regarding chemical composition, mechanical properties, heat treatment, additional testing, manufacturing process, surface coating, or end finish. Contact Daxun now, and we will respond to your inquiry promptly.
Daxun's journey in the stainless steel industry commenced in 2003. Over two decades of dynamic growth have positioned our stainless steel materials and processing business at the pinnacle of China's industry.
With over 20 years of experience in international markets, Daxun's export revenue in 2022 surpassed an impressive US$100 million. This achievement places us among the elite stainless steel trade and processing companies in China. We have strategically established three export service bases across the country and collaborate with leading engineering companies, steel mills, and global trading entities. Our persistent efforts to enhance service capabilities enable us to cater to an expanding overseas market effectively.
Daxun International offers an extensive range of stainless steel chain supermarket services, maintaining long-term partnerships with numerous renowned steel mills worldwide. Our inventory includes 60,000 tons of standard stainless steel and 20,000 tons of specialized metals such as duplex steel, nickel-based alloys, and heat-resistant steel. Quality is paramount; our stainless steel materials are guaranteed to be authentic and meet exacting standards in variety, specifications, and delivery weights.
Daxun boasts a suite of advanced steel processing equipment, complemented by a state-of-the-art physical and chemical testing center. Our processing lines are equipped to handle cutting, grinding, forming, beveling, welding, heat treatment, machining, and spraying, ensuring comprehensive steel processing solutions.
Our services span over 30 industries, including automotive, home appliances, elevators, new energy, vacuum semiconductors, food and beverage/bio-fermentation, petrochemicals, and energy equipment. Partnering with steel mills and research institutions, we offer integrated project services from design and material development to process optimization in manufacturing.
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 exceptional super duplex alloy with an admirably low carbon content (up to 0.03%), complemented by chromium (~25%), nickel (~7%), and molybdenum (~4%). Its design fulfills the demanding requirements for robust strength and unparalleled corrosion resistance, making it ideal for applications in chemical process equipment, the petrochemical industry, and marine environments. Notable for its formidable resistance to chloride-induced stress corrosion cracking, this steel's high chromium, molybdenum, and nitrogen content ensures superior protection against pitting, crevice, and general corrosion.
How Is Duplex 2507 Stainless Steel Made?
- The production of Duplex 2507 stainless steel mirrors the methodologies used for other contemporary high-alloy steels. The process commences in an electric arc furnace where scrap steel is melted alongside the addition of specific alloys. The molten steel is then transferred to an AOD (argon oxygen decarburization) converter, where critical processes such as decarburization, sulfur refinement, and the elimination of dissolved gases are meticulously executed.
- During the AOD process, nitrogen is typically introduced to the steel. Post this stage, the steel progresses to the ladle furnace for precise inclusion adjustments.
- Subsequent to these initial procedures, the molten steel advances to the casting phase, where it is crafted into either solitary ingots or continuously produced blooms. These solid steel forms undergo further refinement through reheating, followed by forging or rolling to achieve the desired thickness. To ensure a uniform internal structure, the steel undergoes solution annealing, a heat treatment followed by rapid water quenching.
- Duplex 2507 pipe materials can be skillfully fabricated via hot or cold forming techniques. For hot forming, the optimal temperature range is between 1024 °C and 1232 °C. After hot forming, a solution annealing process at a minimum of 1052-1125 °C should be executed, succeeded by swift water quenching. Cold forming procedures-encompassing bending, deep drawing, extruding, and pressing-necessitate subsequent heat treatment, which involves solution annealing and quenching to solidify the steel's properties.
How Does Duplex 2507 Stainless Steel Differ From Duplex Steel?
- Duplex 2507 stainless steel stands out as a super duplex variant within the broader category of duplex stainless steels, characterized by a balanced microstructure containing both ferrite and austenite. This dual-phase composition bestows it with exceptional corrosion resistance and extraordinary mechanical strength. While all duplex grades exhibit commendable resistance to pitting, crevice corrosion, and stress corrosion cracking, the precise level of resistance varies by grade. Duplex steels are classified into four segments based on their PREN (Pitting Resistance Equivalent Number) range, with super duplex stainless steels boasting a PREN between 38 and 45.
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 represent the backbone of any fluid management system, ensuring seamless connections and precise control of fluid flow within pipelines and systems. This category encompasses a broad array of components including elbows, tees, stub-ends, returns, caps, crosses, reducers, pipe nipples, and more.
What are the Advantages of Utilizing Duplex 2507 Stainless Steel?
The remarkable benefits of employing Duplex 2507 stainless steel are:
- Duplex 2507 exhibits an exceptional resistance to pitting corrosion, boasting a PREN of up to 43, making it superior to stainless steel grades like 254SMO. Additionally, it is highly resistant to various types of corrosion such as Stress Corrosion Cracking (SCC), crevice corrosion, and general corrosion. These robust properties collectively position Duplex 2507 as a versatile and reliable choice for a wide spectrum of applications in demanding environments.
- Duplex 2507 delivers double the yield strength compared to 300 series stainless steels. This significant strength advantage allows for the use of thinner steel sections, resulting in reduced material costs for equipment designed to operate under identical load conditions.
- With double the yield and tensile strengths of standard stainless steel, Duplex 2507 offers 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 can supply a broad variety of steel grades including 310S, 316L, 304, 304L, 201, 904L, 316H, 316, 316L, and 300 series.
Additionally, we offer 400 series and duplex stainless steels such as 2205, 2304, 2101, 2507, and high-nickel alloys including 904L, 800H, 600H.
Q2. Can you produce the products according to my own drawings?
Yes, we can manufacture products based on your drawings to meet your utmost satisfaction.
Q3. How does your factory handle quality control?
Quality is our top priority. We maintain stringent quality control measures from the initial stages to final production.
Q4. Can I request to change the form of packaging and transportation?
Yes, we can adjust the packaging and transportation methods as per your requests,
but you will need to cover any additional costs incurred during this process.
Q5. How does your factory handle quality control?
Quality is our top priority. We maintain stringent quality control measures from the initial stages to final production.
Q6. How long is the delivery time?
A: Typically, 7 to 20 working days after payment confirmation.
If the order is urgent, we will expedite the manufacturing process to meet your deadline.
Q7. What are your Payment Terms?
A: 100% T/T in advance or 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 manufacture DDQ (Deep Drawing Quality) materials?
A: Yes, we specialize in DDQ materials suitable for applications such as stainless steel pots, sinks, and bowls. Share your specific requirements with us, and we will tailor the mechanical properties to meet your needs.
Q9: How can I obtain a sample?
A: We are delighted to offer FREE samples for your inspection and testing. If you require a small piece, we can cover the courier cost, depending on the specifics.
Q10: Which countries have you exported to?
A: To date, we have proudly exported our premium stainless steel materials to a diverse range of countries including Vietnam, Thailand, Turkey, Russia, Morocco, South 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 gladly arrange for you to be picked up from there.
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