Super Duplex 2507

Q: 1. What is 2507 stainless steel?

2507 stainless steel, also known as Super Duplex stainless steel, is a high-performance alloy known for its excellent corrosion resistance, high strength, and durability. It is particularly suitable for demanding applications in harsh environments.

Q: 2. What are the main properties of 2507 stainless steel?

2507 stainless steel offers exceptional resistance to pitting and crevice corrosion, high mechanical strength, and excellent resistance to stress corrosion cracking. Its balanced duplex structure provides both high tensile strength and excellent impact toughness.

Q: 3. What industries commonly use 2507 stainless steel?

2507 stainless steel is widely used in industries such as oil and gas, chemical processing, marine, and petrochemical. It is ideal for applications that require high resistance to corrosive environments and high mechanical strength.

Q: 4. Can 2507 stainless steel be welded?

Yes, 2507 stainless steel can be welded using conventional welding methods. However, it is recommended to use low heat input and interpass temperature to avoid the formation of detrimental intermetallic phases. Post-weld heat treatment may also be necessary to restore the material’s properties.

Q: 5. How does 2507 stainless steel compare to other stainless steels?

2507 stainless steel offers superior corrosion resistance and strength compared to standard austenitic and ferritic stainless steels. Its duplex microstructure gives it a combination of the best properties of both types, making it a highly versatile and reliable material for extreme conditions.

Q: 6. What are the typical applications of 2507 stainless steel?

Typical applications include pressure vessels, heat exchangers, chemical tanks, subsea equipment, and components for the oil and gas industry. Its high resistance to chloride-induced stress corrosion cracking makes it particularly suitable for use in seawater and brine environments.

Q: 7. What are the mechanical properties of 2507 stainless steel?

2507 stainless steel exhibits high tensile strength, yield strength, and excellent impact toughness. It has a minimum tensile strength of 800 MPa and a yield strength of 550 MPa, making it suitable for high-stress applications.

Q: 8. How is 2507 stainless steel maintained?

Maintenance of 2507 stainless steel involves regular cleaning to remove any contaminants that could lead to surface corrosion. Inspections should be conducted periodically to ensure the integrity of the material in critical applications, especially in highly corrosive environments.

Q: 9. Are there any limitations to using 2507 stainless steel?

While 2507 stainless steel offers many advantages, it is not immune to certain forms of corrosion, such as hydrogen-induced cracking. Careful consideration must be given to material selection and fabrication processes to avoid these issues. Additionally, its high strength can make machining more challenging compared to other stainless steels.

Q: 10. Where can I purchase 2507 stainless steel?

2507 stainless steel can be purchased from reputable suppliers specializing in high-performance alloys. At GHT Steel, we offer high-quality 2507 stainless steel products that meet industry standards and specific customer requirements. Contact us for more information or to request a quote.

2507 stainless steel, also known as duplex 2507, super duplex 2507, or UNS S32750, is a ferritic-austenitic (duplex) stainless steel. This material combines many of the beneficial properties of both ferritic and austenitic stainless steels. Due to its high chromium and molybdenum content, 2507 stainless steel exhibits exceptional resistance to pitting, crevice corrosion, and general corrosion, particularly in chloride-containing environments.

The duplex microstructure of 2507 stainless steel ensures excellent resistance to stress corrosion cracking, making it highly durable in demanding conditions. Additionally, 2507 stainless steel boasts high mechanical strength, making it suitable for a wide range of industrial applications that require both durability and corrosion resistance.

Name	Super Duplex 2507
Forms	Stainless Steel Coil, Stainless Steel Sheet, Stainless Steel Plate, Stainless Steel Strip
Standard	ASTM, GB, SUS, etc
Mill Origin	LISCO, Baosteel, etc.
Thickness	0.22-30.0mm, or customized according to customer requirements.
Width	20-1540mm, or customized according to customer requirements.
Weight Per Coil	5/10/20MT or customized according to customer requirements.
Edge	Slit Edge/ Mill Edge
Finish	2B, No.1, 1D, 2D, anneal and pickling, mill finish, mirror, etc.
Delivery Time	Stock goods 7-15 days, Future goods within 25 days
Package Detail	Standard Sea-Worthy Packing
Sample	Free for 201 stainless steel sample

2507 stainless steel is renowned for its exceptional corrosion resistance, attributed to its high chromium and molybdenum content:

- General Corrosion: The high chromium and molybdenum content in 2507 stainless steel provide it with strong resistance to overall corrosion from organic acids like formic and acetic acid. It also exhibits excellent resistance to inorganic acids, particularly those containing chlorides. Compared to 904L, 2507 offers superior resistance to diluted sulfuric acid mixed with chloride ions. While 316L is unsuitable for hydrochloric acid environments due to the risk of localized and general corrosion, 2507 can withstand diluted hydrochloric acid with strong resistance to pitting and crevice corrosion.
- Intergranular Corrosion: The low carbon content of 2507 significantly reduces the risk of carbide precipitation during heat treatment, resulting in excellent resistance to intergranular corrosion associated with carbide precipitation.
- Stress Corrosion Cracking: The duplex structure of 2507 provides high resistance to stress corrosion cracking. Its overall corrosion resistance and strength are superior to 2205 duplex stainless steel. In chloride environments, stainless steel is more susceptible to crevice corrosion, which is nearly unavoidable in construction. However, 2507 has a strong resistance to crevice corrosion. Its critical pitting temperature in sulfuric acid containing 2000 ppm chloride ions is 0.1 mm/year, and in hydrochloric acid, it is also 0.1 mm/year.

2507 Corrosion Resistance

2507 Mechanical Properties

2507 stainless steel boasts outstanding mechanical properties, making it ideal for various structural and mechanical components:

Strength and Impact Resistance: 2507 features high compressive strength and impact resistance, along with a low thermal expansion coefficient and high thermal conductivity, making it suitable for many structural parts and mechanical components. The material’s impact strength is notable, but it should not be exposed to temperatures above 570°F for extended periods, as this may reduce its toughness. The tensile strength is σb ≥ 730 MPa, and the elongation is δ ≥ 20%.
Welding Consumables: For optimal performance and to ensure corrosion resistance during welding, it is recommended to use matching welding consumables. Suitable options include ER2594 welding wire and E2594 welding rod, which align with the chemical composition of 2507 and provide excellent welding performance and long-lasting corrosion protection.

Oil and natural gas industry equipment
Offshore platforms, heat exchangers, underwater equipment, firefighting equipment
Chemical processing industry, vessels and pipelines
Desalination, high-pressure RO equipment, and submarine pipelines
Energy industry such as power plant FGD (flue gas desulfurization) systems, industrial washing systems, absorption towers
Mechanical components (high strength, corrosion resistance, wear-resistant components)

2507 Stainless Steel Application

2507 Stainless Steel Tags

UNS S32750, 1.4410, 25-7-4, SAF 2507, Grade 2507, Type 2507, SS 2507, Inox 2507, Acero 2507, Inox 2507

2507 Stainless Steel Technical Datasheet

2507 Material Standards Comparison Sheet

Grade	ASTM A240/ASME SA240	EURONORM	AFNOR	DIN/EN
2507	UNS S32750	X2 Cr Ni MoN 25.7.4	Z3 CN 25.06 Az	1.4410

2507 Material Chemical Compositions Datasheet

Grade	C	Mn	Ni	Si	Cr	Mo	N
2507	≤0.03	≤2.0	4.5～6.5	≤1.0	21.0～24.0	2.5～3.5	0.08～0.20

2507 Mechanical Properties Datasheet

Grade	Yield Strength	Tensile Strength	Hardness(HB)	Elongation(%)
2507	>550 Mpa	>795 Mpa	<310	≥15

Why Buy Super Duplex 2507 from GHT

Ever been in a bind due to an urgent need for substantial quantities of stainless steel coils, only to find your supplier’s inventory lacking? Such situations can disrupt your workflow and plans.

Our Advantage: With us, that scenario is a thing of the past. Our inventory is consistently stocked to the brim, ensuring rapid fulfillment of even the largest orders, seamlessly aligning with your business timeline.

The quest for stainless steel coils with precise specifications can often lead to dead ends. Finding a supplier who understands and meets these unique requirements is crucial.

Our Advantage: Our inventory is a testament to diversity, encompassing a variety of materials, thicknesses, and widths. We pride ourselves on being able to meet your specific project needs with pinpoint accuracy.

You might have encountered situations where custom processing is needed, but finding the right supplier to meet your specific demands can be a challenge.

Our Advantage: Our robust processing capabilities are designed to cater to all your customization needs. Be it dimension adjustments, stainless steel finish surface treatments, or other specific requirements, we offer professional one-stop services.

Accurate shearing is crucial for the use of stainless steel coils, but not all suppliers can offer such precision services.

Our Advantage: Our shearing services are both professional and efficient, ensuring precise cuts as per your requirements, guaranteeing that the products meet your exact specifications.

When searching for stainless steel coil suppliers, pricing is often a key consideration. You might have had to compromise on your ideal supplier due to high costs.

Our Advantage: Through effective cost control and optimized procurement processes, we ensure competitive pricing. This means choosing us not only gets you high-quality products but also services that offer great value for money.

Finding Material S32750?

Send us a message to discuss your duplex 2507 needs. We always reply within 24 hours.

How We Pack 2507 Stainless Steel Sheet & Coil

In GHT, all of our stainless steel coils are packaged as per international standard to prevent any possible damage or loss. By default, for quantity less than 1 whole compete coil (our MOQ is 5 tons), we will use woven plastic bag to cover SS coils and then fix them upon wooden pallet for further protection. We can also package the SS coils as per your special requirement, though this can incur extra cost.

In GHT, all of our stainless steel sheets are packaged as per international standard to prevent any possible damage or loss. By default, we will use brown paper to cover SS sheets and then bundle them together onto wooden pallets. At times, upon some customers’ requests, we will also apply reinforced package with extra metal straps fixed on the four corners, though this can incur extra cost. For enhanced customer experience, we also accept customized package as per your requests.