| 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 full-service supplier of 2507 Duplex Steel Coils in China, offering coil thicknesses from 0.5mm to 3.16mm. Our 2507 alloy duplex steel plates are an economical alternative to 904L or 6% molybdenum super austenitic stainless steel. Alloy 2507 (UNS S32750) is a super duplex stainless steel containing 25% chromium, 4% molybdenum, and 7% nickel, engineered for high-stress applications demanding superior strength and corrosion resistance. Ideal for chemical processing, petrochemical, and seawater equipment, this steel is highly resistant to chloride stress corrosion cracking, offering high thermal conductivity and a low coefficient of thermal expansion. The elevated levels of chromium, molybdenum, and nitrogen guarantee excellent resistance to pitting, crevice, and general corrosion.
At Daxun Stainless Steel, we ensure complete traceability of each stainless steel coil through our ERP system, capturing details like type, specification, and origin, while advocating for and supporting the industry's anti-counterfeiting measures. Leveraging advanced technology for precision processing and customization, our high-quality standards set the industry benchmark. Our service encompasses the entire product lifecycle, offering professional material selection and processing solutions pre-sale, stringent monitoring during sales, and reliable after-sales service guarantees.
Quality, Delivery, Inspection
- Daxun performs rigorous quality assurance tests, including flattening, pitting resistance, mechanical, hardness, material positive identification, and expansion tests. These stringent evaluations ensure our materials meet all application requirements.
- Throughout the production process, we meticulously measure the product's diameter, thickness, and surface quality. Our standard delivery time is 7-15 days, with an extension to 20 days for special size products.
We strictly adhere to our contractual delivery timelines.
- We welcome third-party agencies to inspect our factory.
- We provide free samples for customer testing.
- We support on-site or video factory inspections.
Ordering Information
When placing purchase orders, please specify 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. Reach out to Daxun now for an immediate email response.
Since its inception in 2003, Daxun's stainless steel division has experienced two decades of remarkable growth. Today, Jiangsu Daxun Alloy Co., Ltd. stands as a leader in China's stainless steel industry, pioneering advancements and setting benchmarks in material and processing quality.
With over 20 years of experience in the international market, Daxun has established itself as a dominant force in stainless steel trade and processing. By 2022, our export revenue soared past US$100 million, positioning us among the top exporters in the industry. Strategically located, our three export service bases in China collaborate seamlessly with engineering firms, steel mills, and global trading companies to deliver exceptional service and expand our global footprint.
Daxun International offers an unparalleled stainless steel chain supermarket experience, forged through long-standing partnerships with renowned steel mills worldwide. We boast an impressive inventory of 60,000 tons of standard stainless steel, complemented by 20,000 tons of niche metals including duplex steel, nickel-based alloys, and heat-resistant steel. Our stainless steel materials are renowned for their impeccable quality and adherence to stringent standards.
Equipped with a robust array of steel processing machinery and a state-of-the-art physical and chemical testing center, Daxun excels in diverse processing capabilities such as cutting, grinding, forming, beveling, welding, heat treatment, machining, and spraying. Our comprehensive facilities ensure precision and quality in every product.
Spanning over 30 industries, Daxun's services cater to sectors including automotive, home appliances, elevators, new energy, vacuum semiconductors, food and beverage/bio-fermentation, petrochemicals, and energy equipment. Our collaboration with steel mills, research institutes, and other professional entities enables us to provide holistic solutions from project design and material development to optimizing processing and manufacturing processes.
2507Stainless 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 stands as a super duplex marvel, boasting low carbon content (up to 0.03%) and enriched with chromium (~25%), nickel (~7%), and molybdenum (~4%). This steel is meticulously engineered to meet the stringent demands of applications that require unparalleled strength and corrosion resistance. It excels in environments such as chemical processing, the petrochemical sector, and marine applications, where chloride-induced stress corrosion cracking is a critical concern. Thanks to its high chromium, molybdenum, and nitrogen content, Duplex 2507 offers exceptional protection against pitting, crevice, and general corrosion.
How Is Duplex 2507 Stainless Steel Made?
- The manufacturing process of Duplex 2507 stainless steel mirrors that of other high-alloy steels, initiated in an electric arc furnace where scrap steel is melted with the addition of desired alloys. The molten steel is then transferred to an AOD (argon oxygen decarburization) converter, where essential processes such as decarburization, sulfur refinement, and gas removal are performed.
- During the AOD process, nitrogen is typically introduced to the steel. The steel then moves to the ladle furnace for inclusion adjustment.
- After these preliminary stages, the molten steel progresses to the casting operation, which can yield either individual ingots or continuously produced blooms. These solid steel forms are further refined through reheating, forging, or rolling to achieve the specified thickness. To ensure a uniform internal structure, solution annealing heat treatment is applied, followed by a water quench.
- Fabrication of Duplex 2507 pipe materials can be done through hot or cold forming processes. Hot forming necessitates temperatures between 1024 °C and 1232 °C, with subsequent solution annealing at 1052-1125 °C, followed by rapid water quenching. Cold forming, encompassing techniques like bending, deep drawing, extruding, and pressing, requires post-heat treatment involving solution annealing and quenching.
How Does Duplex 2507 Stainless Steel Differ From Duplex Steel?
- Duplex 2507 stainless steel is classified as a super duplex stainless steel, characterized by a microstructure that integrates both ferrite and austenite in nearly equal proportions. This blend imparts high corrosion resistance and robust mechanical strength. Nonetheless, duplex steel grades vary in their corrosion resistance. While they all offer good defense against localized corrosion such as pitting, crevice corrosion, and stress corrosion cracking, the resistance level is contingent on the specific grade and alloy composition. Duplex stainless steels are categorized into four groups based on their PREN (Pitting Resistance Equivalent Number) range, with super duplex stainless steel featuring a PREN of 38 to 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 are indispensable components for seamlessly connecting and expertly controlling the flow of fluids in pipelines and systems. This vital category includes elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples, among other essential fittings.
What Are the Advantages of Using Duplex 2507 Stainless Steel?
The compelling advantages of using Duplex 2507 stainless steel include:
- Duplex 2507 stainless steel exhibits exceptional resistance to pitting corrosion, boasting a PREN of up to 43. This ensures superior corrosion resistance over stainless steel grades like 254SMO. Moreover, Duplex 2507 excels in resisting other forms of corrosion, such as Stress Corrosion Cracking (SCC), crevice corrosion, and general corrosion. These outstanding corrosion-resistant properties make Duplex 2507 a versatile and reliable choice for various applications, particularly in harsh environments.
- Duplex 2507 offers double the yield strength compared to 300 class stainless steel. This significant strength advantage allows for the use of thinner steel sections, thereby reducing material costs for equipment operating under similar load conditions.
- With its doubled yield and tensile strength compared to standard stainless steel, Duplex 2507 provides 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 wide range of general steel types including 310S, 316L, 304, 304L, 201, 904L, 316H, 316, and 300 series stainless steel.
Additionally, we provide 400 series and duplex stainless steel such as 2205, 2304, 2101, 2507, along with high-nickel alloys like 904L, 800H, and 600H.
Q2. Can you produce the products according to my own drawings?
Yes, we are fully capable of producing products based on your drawings, ensuring the highest level of satisfaction tailored to your specific needs.
Q3. How does your factory do regarding quality control?
Quality is our utmost priority. We adhere to rigorous quality control measures from the initial stages to the final product, ensuring excellence throughout the production process.
Q4. Can I request to change the form of packaging and transportation?
Yes, we can accommodate requests to modify the packaging and transportation methods according to your specifications.
Please note that any additional costs incurred during this period and any price differences will be borne by you.
Q5. How does your factory do regarding quality control?
Quality is our utmost priority. We adhere to rigorous quality control measures from the initial stages to the final product, ensuring excellence throughout the production process.
Q6. How long is the delivery time?
A: Our standard delivery time is 7~20 working days after confirming the payment.
For urgent orders, we expedite the process to meet your timeline and ensure timely delivery.
Q7. What is your Payment?
A: 100% T/T in advance, Western Union (For Small Orders)
B: 30% T/T deposit and 70% balance before shipment
C: 100% Irrevocable LC at sight (For Large Orders)
Q8: Can you make DDQ (Deep Drawing Quality)?
A: Yes, we specialize in producing materials suitable for DDQ applications such as stainless steel pots, sinks, and bowls. Please specify your usage requirements, and we will adjust the mechanical properties to meet your needs.
Q9: How to get a sample?
A: We're delighted to offer FREE samples for your evaluation and testing. Should you need a small piece, we are happy to cover the courier cost, subject to certain conditions.
Q10: Which countries have you exported to?
A: To date, we have proudly exported our premium stainless steel material 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: Simply take a flight to Guangzhou Baiyun International Airport, and we will be there to welcome and escort you to our facilities.
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