| 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 your premier 2507 Duplex Steel Coil Supplier in China, offering comprehensive solutions with coil thicknesses ranging from 0.5mm to 3.16mm. Our Alloy 2507 (UNS S32750) is a super duplex stainless steel composed of 25% chromium, 4% molybdenum, and 7% nickel, delivering unparalleled strength and exceptional corrosion resistance. Ideal for rigorous applications in chemical processing, petrochemical, and seawater equipment, this alloy is significantly more cost-effective than 904L or 6% molybdenum super austenitic stainless steel. Notably resistant to chloride stress corrosion cracking, it boasts high thermal conductivity and a low coefficient of thermal expansion. The high concentrations of chromium, molybdenum, and nitrogen ensure superior resistance to pitting, crevice corrosion, and general corrosion.
At Daxun Stainless Steel, we ensure full traceability of each stainless steel coil through our ERP system, detailing type, specification, and origin, while championing industry anti-counterfeiting initiatives. Our reliance on cutting-edge technology for processing and customization sets industry benchmarks for precision and quality. We excel in product life cycle management, offering professional material selection and processing solutions before sales, stringent monitoring during sales, and comprehensive service guarantees after sales.
Quality, Delivery, Inspection
- Daxun conducts a suite of rigorous quality assurance tests, including flattening, pitting and resistance, mechanical, hardness, material positive identification, and expansion tests. These meticulous evaluations ensure our materials meet the highest standards for your specific applications.
- During production, we meticulously measure the diameter, thickness, and surface quality of our products. Our standard delivery time is 7-15 days, extending to 20 days for special size products.
Our delivery time strictly adheres to the contract terms.
- We support third-party inspections at our factory to ensure quality assurance.
- We offer free samples to customers for testing purposes.
- We provide options for on-site or video factory inspections to meet your needs.
Ordering Information
To place an order, please include quantity, grade, type or category, API5L reference, thickness, width, length, and any applicable attachments or additional requirements relating 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 stainless steel journey started in 2003. Over two decades of rapid advancement, our stainless steel materials and processing business have maintained a leading position in China's industry.
For over 20 years, Daxun has excelled in overseas markets. In 2022, our export revenue surpassed US$100 million, placing us among the top stainless steel trade and processing companies in China. We've established three export service bases, collaborated with engineering companies, steel mills, and international trading firms to serve global markets. Our continuous improvements in service capabilities reflect our commitment to expanding our international reach.
Daxun International offers comprehensive stainless steel chain supermarket services and maintains long-term partnerships with 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, our materials are of indisputable quality and authenticity. We ensure that varieties, specifications, and delivery weights meet stringent standards.
Daxun boasts advanced steel processing equipment, a state-of-the-art physical and chemical testing center, and a variety of processing lines including cutting, grinding, forming, beveling, welding, heat treatment, machining, and spraying.
We serve over 30 industries such as automobiles, 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 entities, we offer integrated services 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 duplex steel, characterized by its remarkably low carbon content (up to 0.03%), and enriched with chromium (~25%), nickel (~7%), and molybdenum (~4%). Engineered to meet stringent requirements, Duplex 2507 excels in applications demanding exceptional strength and unparalleled corrosion resistance. These include chemical processing equipment, petrochemical industry infrastructure, and seawater handling systems. Notably, this steel showcases extraordinary resistance to chloride-induced stress corrosion cracking. The high levels of chromium, molybdenum, and nitrogen further arm it with superb resistance to pitting, crevice, and general corrosion, making it an ideal choice for challenging environments.
How Is Duplex 2507 Stainless Steel Made?
- The production of Duplex 2507 stainless steel involves sophisticated manufacturing techniques akin to those used for other advanced high-alloy steels. The process begins in an electric arc furnace, where scrap steel is melted down and alloying elements are meticulously added. The molten steel then progresses to an AOD (argon oxygen decarburization) converter. Here, crucial processes such as decarburization, sulfur refinement, and the removal of dissolved gases take place, ensuring the steel's high quality.
- During the AOD process, nitrogen is typically introduced to enhance the steel's properties. The steel is then transferred to a ladle furnace, where the inclusion content is fine-tuned to meet precise standards.
- Following these initial stages, the molten steel is cast into either solitary ingots (large metal blocks) or continuously produced blooms. These solid forms undergo further refinement through reheating, followed by forging or rolling to achieve the required thickness. To ensure a uniform internal structure, the steel undergoes a heat treatment known as solution annealing, which is capped off with a rapid water quenching step.
- Fabrication of Duplex 2507 pipe materials can be performed through either hot or cold forming processes. For hot forming, the temperature should be precisely maintained between 1024 °C and 1232 °C. After hot forming, a critical solution annealing process is conducted at a minimum temperature of 1052-1125 °C, followed by an expedited water quench. In cold forming processes like bending, deep drawing, extruding, and pressing, a subsequent heat treatment involving solution annealing and quenching is necessary to maintain optimal material properties.
How Does Duplex 2507 Stainless Steel Differ From Duplex Steel?
- Duplex 2507 stainless steel stands out as a super duplex stainless steel, which is a subset of duplex stainless steels. These steels are known for their unique microstructure, comprising both ferrite and austenite in almost equal parts. This dual-phase structure bestows duplex stainless steels with exceptional corrosion resistance and robust mechanical strength. While all duplex steels offer impressive localized corrosion resistance-such as pitting and crevice corrosion-the exact degree varies by grade and alloy composition. Duplex stainless steels are categorized into four types based on their PREN (Pitting Resistance Equivalent Number). Super duplex stainless steels, like Duplex 2507, boast PREN values ranging from 38 to 45, reflecting their superior resistance to harsh conditions.
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 designed to seamlessly connect and control fluid flow within pipelines and systems. These include a variety of fittings 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 numerous benefits of employing Duplex 2507 stainless steel are as follows:
- Duplex 2507 stainless steel boasts superior resistance to pitting corrosion, with a PREN of up to 43, surpassing grades like 254SMO. It also excels in resisting other forms of corrosion including Stress Corrosion Cracking (SCC), crevice corrosion, and general corrosion. These combined attributes render Duplex 2507 an exceptionally versatile and reliable choice for a myriad of demanding applications in harsh environments.
- The 2507 grade offers double the yield strength compared to 300 series stainless steel. This pronounced strength advantage permits the use of thinner steel sections, translating to reduced material costs for equipment operating under equivalent load conditions.
- This steel exhibits double the yield and tensile strength of standard stainless steel, significantly enhancing its 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 an extensive range of steel types including 310S, 316L, 304, 304L, 201, 904L, 316H, 316, and 316L in the 300 series.
Additionally, we provide 400 series, duplex stainless steels such as 2205, 2304, 2101, 2507, and high-nickel alloys like 904L, 800H, and 600H.
Q2. Can you produce the products according to my own drawings?
Absolutely, we can manufacture products tailored to your drawings to ensure your utmost satisfaction.
Q3. How does your factory manage quality control?
Quality is our top priority. We maintain rigorous quality control measures throughout the entire production process.
Q4. Can I request changes in packaging and transportation?
Yes, we can modify packaging and transportation to meet your specifications,
however, any additional costs and differences incurred during this period will be the customer's responsibility.
Q5. How does your factory handle quality control?
Quality is paramount. We emphasize stringent quality control from start to finish.
Q6. What is the delivery time?
A: Delivery is 7~20 working days post payment confirmation.
For urgent orders, we expedite the process to ensure timely completion.
Q7. What are your payment terms?
A: 100% T/T in advance, Western Union (for small orders)
B: 30% T/T upfront and 70% balance prior to shipment
C: 100% Irrevocable LC at sight (for large orders)
Q8: Can you provide DDQ (Deep Drawing Quality)?
A: Yes, we can. Our materials are suitable for producing stainless steel pots, sinks, bowls, etc. Inform us of your specific usage, and we will adjust 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 smaller pieces, we may even cover the courier costs, depending on the circumstances.
Q10: To which countries have you exported your products?
A: So far, Jiangsu Daxun Alloy Co., Ltd. has successfully exported our premium stainless steel materials to a diverse array of nations, including Vietnam, Thailand, Turkey, Russia, Morocco, South Korea, India, Pakistan, the UAE, Ukraine, and many more.
Q11: What is the best way to visit your company?
A: Simply fly to Guangzhou Baiyun International Airport, and we will personally arrange to pick you up for a warm welcome at Jiangsu Daxun Alloy Co., Ltd.
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