| 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 full-service 2507 Duplex Steel Coil Supplier in China, providing an extensive range of coil thicknesses from 0.5mm to 3.16mm. Our 2507 alloy duplex steel plate presents a cost-effective alternative to 904L or 6% molybdenum super austenitic stainless steel. Alloy 2507 (UNS S32750), a super duplex stainless steel, boasts an impressive composition of 25% chromium, 4% molybdenum, and 7% nickel. It is crafted for the most demanding applications that require exceptional strength and corrosion resistance, making it ideal for chemical processing, petrochemical, and seawater equipment. Notably, this steel exhibits remarkable 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 overall general corrosion.
Daxun Stainless Steel ensures comprehensive traceability for each stainless steel coil via our advanced ERP system. This includes type, specification, and origin, advocating and supporting stringent industry anti-counterfeiting measures. Leveraging cutting-edge technology for processing and customization, Daxun Stainless Steel sets the industry benchmark for high precision and quality. Our service excellence extends through the entire product lifecycle, from offering expert material selection and processing solutions pre-sale, through rigorous monitoring during sales, to providing unwavering service guarantees post-sale.
Quality, Delivery, Inspection
- Daxun conducts an array of rigorous quality assurance tests, including flattening tests, pitting and resistance tests, mechanical tests, hardness tests, material positive identification, and expansion tests. These comprehensive tests ensure that our materials meet and exceed the stringent requirements for their intended applications.
- During the production process, we meticulously measure the diameter, thickness, and surface quality of our products. Our standard delivery timeframe ranges from 7-15 days. For special size products, delivery may extend up to 20 days.
Our Delivery Time Strictly Adheres to Contract Agreements
- We Support Customer Third-Party Agency Inspections at Our Factory
- We Offer Free Samples to Customers for Testing Purposes
- We Support On-Site or Video Factory Inspections
Ordering Information
When placing purchase orders, please include details such as quantity, grade, type or category, API5L reference, thickness, width, length, and any additional requirements related to chemical composition, mechanical properties, heat treatment, additional testing, manufacturing processes, surface coating, or end finishes. Contact Daxun now, and we will respond to your email promptly.
Daxun's foray into the stainless steel business began in 2003. Over two decades of rapid growth have seen our materials and processing business consistently lead China's industry, setting benchmarks in quality and innovation.
For over 20 years, Daxun has been a prominent player in the international market. In 2022 alone, our export revenue surpassed a remarkable US$100 million, placing us among the elite stainless steel trade and processing companies in China. Through our trio of strategically located export service bases across China, we have forged strong alliances with engineering firms, steel mills, and international trading giants to serve and expand in overseas markets. Our commitment to enhancing service capabilities and market expansion remains steadfast.
Daxun International offers comprehensive stainless steel supermarket services, backed by long-standing relationships with top global steel mills. We boast an impressive inventory, including 60,000 tons of standard stainless steel and 20,000 tons of specialty metals such as duplex steel, nickel-based alloys, and heat-resistant steel. Our materials are synonymous with reliability and authenticity, adhering strictly to the highest standards in variety, specifications, and delivery weights.
Daxun is equipped with state-of-the-art steel processing equipment and a world-class physical and chemical testing center. Our extensive processing lines include cutting, grinding, forming, beveling, welding, heat treatment, machining, and spraying, ensuring precision and quality in every product.
Our services span over 30 industries, including automotive, home appliances, elevators, new energy, vacuum semiconductors, food and beverage/bio-fermentation, petrochemicals, and energy equipment. Through collaborations with steel mills, research institutes, and other entities, we deliver integrated solutions from project design and material development to process optimization in manufacturing.
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 is a superior grade of super duplex steel featuring low carbon content (up to 0.03%) and enriched with chromium (~25%), nickel (~7%), and molybdenum (~4%). Engineered to meet the rigorous demands of applications requiring exceptional strength and unmatched corrosion resistance, Duplex 2507 serves pivotal roles in chemical processing equipment, the petrochemical industry, and seawater equipment. Renowned for its outstanding 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?
- Duplex 2507 stainless steel is crafted using advanced techniques similar to those applied to other high-performance alloys. Initially, scrap steel is melted in an electric arc furnace, where the desired alloying elements are incorporated. The molten steel is then transferred to an AOD (argon oxygen decarburization) converter, a critical step where key processes such as decarburization, sulfur refinement, and gas elimination take place.
- During the AOD process, nitrogen is typically added to elevate the steel's properties. The molten steel then proceeds to a ladle furnace to fine-tune the inclusion levels.
- Post preliminary steps, the steel is directed to the casting phase, capable of producing either solitary ingots or continuously cast blooms. These solid steel forms undergo reheating followed by forging or rolling to achieve the required thickness. To ensure a uniform internal structure, the material undergoes solution annealing and is subsequently quenched in water.
- Duplex 2507 pipe materials can be shaped through hot or cold forming processes. During hot forming, the temperature range should be maintained between 1024 °C and 1232 °C. Post hot forming, the material requires solution annealing at a minimum temperature of 1052-1125 °C, followed by rapid water quenching. Cold forming techniques such as bending, deep drawing, extruding, and pressing necessitate a subsequent heat treatment involving solution annealing and quenching.
How Does Duplex 2507 Stainless Steel Differ From Duplex Steel?
- Duplex 2507 stainless steel stands out as a super duplex category, characterized by a microstructure that equally integrates ferrite and austenite phases. This unique composition amalgamates the best qualities of both phases, yielding high corrosion resistance and robust mechanical strength. The corrosion resistance of duplex steels, including localized corrosion like pitting and crevice corrosion, varies by grade and alloy composition. Classified into four categories based on their PREN (Pitting Resistance Equivalent Number) range, super duplex stainless steels boast a PREN between 38 and 45, signifying superior resistance levels.
What Are the Uses of Duplex 2507 Stainless Steel?
Common applications of Duplex 2507 stainless steel include:
- Desalination.
- Oil and gas industry equipment, such as offshore platforms, pipelines, and well casings.
- Chemical processing equipment, especially those handling highly corrosive chemicals.
- Pulp and paper industry, notably in bleaching process equipment.
- Petrochemical industry applications, including PVC strippers.
- Water desalination plants.
- Power industry equipment, particularly flue gas desulfurization (FGD) systems.
- Marine components, such as ship propellers and shafts.
- Pollution control equipment like scrubbers.
- Fittings serve as essential components for seamlessly connecting and regulating the flow of fluids within pipelines and various systems. These fittings include a comprehensive range such as elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples, among others.
What Are the Advantages of Utilizing Duplex 2507 Stainless Steel?
The advantages of utilizing Duplex 2507 stainless steel encompass:
- Boasting a PREN of up to 43, Duplex 2507 stainless steel exhibits exceptional resistance to pitting corrosion, surpassing grades like 254SMO. Furthermore, it demonstrates high resilience against other forms of corrosion, including Stress Corrosion Cracking (SCC), crevice corrosion, and general corrosion. This suite of corrosion-resistant attributes makes Duplex 2507 a versatile and reliable choice for a myriad of applications in challenging environments.
- Duplex 2507 delivers twice the yield strength of 300 series stainless steel. This notable strength advantage enables the use of thinner steel sections, resulting in reduced material costs while maintaining the same load-bearing capacity.
- Possessing double the yield and tensile strength compared to standard stainless steel, Duplex 2507 ensures 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 offer you a diverse range of general steel types including 310S, 316L, 304, 304L, 201, 904L, 316H, 316, 316L, and the 300 series.
Additionally, we supply the 400 series and duplex stainless steels such as 2205, 2304, 2101, 2507, and high-nickel alloy varieties like 904L, 800H, 600H.
Q2. Can you produce the products according to my own drawings?
Yes, we can manufacture products precisely according to your drawings to ensure complete satisfaction.
Q3. How does your factory ensure quality control?
Quality is our utmost priority. We consistently prioritize stringent quality control measures from the initial stages through to completion.
Q4. Can I request to change the form of packaging and transportation?
Yes, we can modify the packaging and transportation methods to meet your specific requests,
however, you will need to cover any additional costs and discrepancies incurred during this period.
Q5. How does your factory do regarding quality control?
Quality is our utmost priority. We consistently prioritize stringent quality control measures from the initial stages through to completion.
Q6. How long is the delivery time?
A: The delivery time ranges from 7 to 20 working days after payment confirmation.
If the order is urgent, we will expedite production in our workshop to meet your needs ahead of schedule.
Q7. What are your payment terms?
A: 100% T/T advance, Western Union (For Small Orders)
B: 30% T/T deposit and balance of 70% before shipment
C: 100% Irrevocable LC at sight (For Large Orders)
Q8: Can you provide DDQ (Deep Drawing Quality)?
A: Yes, we can. Our material is suitable for applications such as stainless steel pots, sinks, and bowls. Specify your 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. If you require just a small piece, we can cover the courier cost, depending on the circumstances.
Q10: Which countries have you exported to?
A: To date, we have successfully exported our stainless steel materials to an impressive list of countries, including Vietnam, Thailand, Turkey, Russia, Morocco, 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 more than happy to pick you up upon your arrival.
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