Duplex 2507 / UNS S32750 / W.Nr. 1.4410
Duplex Steel 2507
Looking for a super strong and corrosion-resistant stainless steel? Look no further than Super Duplex 2507! This alloy is made with 25% chromium, 4% molybdenum, and 7% nickel, giving it excellent resistance to both pitting and crevice corrosion. Plus, its unique duplex structure provides extra protection against stress corrosion cracking.
Just keep in mind that Duplex 2507 is best used for applications below 600°F (316°C). Using it at higher temperatures can weaken its toughness and corrosion resistance.
And the best part? Duplex 2507 is also super versatile, offering fantastic mechanical properties. You can often use lighter gauges of this material to achieve the same strength as thicker nickel alloys, saving you time and money in the fabrication process.
Industries and Applications
Super Duplex Steel 2507 (also known as Duplex Stainless Steel 2507 or Duplex Steel 2507), is a high-performance duplex alloy that offers exceptional strength and corrosion resistance. With its unique combination of 25% chromium, 4% molybdenum, and 7% nickel, Super Duplex 2507 is a versatile material that has a wide range of industrial and commercial applications.
The oil and gas industry is one of the largest users of Super Duplex 2507, as it is ideal for use in offshore drilling rigs, pipelines, and storage tanks. The high resistance to corrosion and pitting makes it ideal for use in harsh, corrosive environments.
Super Duplex 2507 is also used in the chemical processing industry, where it is frequently used for heat exchangers, tanks, and piping systems. The material’s high resistance to stress corrosion cracking makes it ideal for use in chemical plants, where it is often exposed to harsh chemicals.
In the paper and pulp industry, Super Duplex 2507 is often used for pumps, valves, and other components that require strength and durability. It is also used in the pharmaceutical industry for its excellent resistance to corrosion and its non-toxic properties.
The marine industry also benefits from Super Duplex 2507, as it is used in the construction of ships, offshore platforms, and other marine structures. The material’s exceptional resistance to corrosion and pitting makes it ideal for use in saltwater environments.
Resistance to Corrosion
2507 Duplex Steel is well-known for its exceptional resistance to corrosion and pitting. With its unique composition of 25% chromium, 4% molybdenum, and 7% nickel, Super Duplex 2507 is a highly durable material that offers superior protection against harsh, corrosive environments.
One of the key factors contributing to Super Duplex 2507’s corrosion resistance is its duplex structure. This structure provides the material with enhanced resistance to chloride stress corrosion cracking, making it ideal for use in harsh chemical environments.
In addition, the high molybdenum and chromium content of Super Duplex 2507 gives it excellent resistance to pitting and crevice corrosion. This makes it an ideal choice for use in applications where it will be exposed to corrosive liquids, such as the chemical processing industry.
2507 duplex’s resistance to corrosion is further enhanced by its high resistance to stress corrosion cracking. This makes it an excellent choice for use in high-pressure, high-temperature environments, such as the oil and gas industry.
Fabrication and Heat Treatment
2507 Duplex is a highly versatile material that can be easily fabricated to meet the demands of a wide range of applications. With its high strength and toughness, Super Duplex 2507 is well-suited for use in demanding industrial and commercial environments.
When fabricating Super Duplex 2507, it is important to consider the material’s high thermal conductivity and tendency to work harden. These factors can make it challenging to form and shape the material, so it is important to use appropriate fabrication techniques and equipment.
Super Duplex 2507 can be easily machined using standard metalworking tools and techniques. However, due to its high hardness, care must be taken to ensure that the cutting edges are sharp and that cutting speeds are kept low.
Welding is another important aspect of Super Duplex 2507 fabrication. The material can be easily welded using standard welding techniques, but it is important to carefully control the welding process to prevent cracking. Preheating the material prior to welding can help to reduce the risk of cracking.
Heat treatment is another important aspect of Super Duplex 2507 fabrication. The material is highly heat-resistant, but extended exposure to elevated temperatures can reduce both its toughness and corrosion resistance. It is important to carefully control the heat treatment process to ensure that the material’s mechanical properties are not degraded.
Duplex 2507 – Applicable Specifications
| Form | ASTM | ASME | Other Standards |
|---|---|---|---|
Duplex 2507 Plate & Sheet |
A240 | SA240 | EN 10088-2, DIN 1.4410 |
Duplex 2507 Sheet |
A240 | SA240 | EN 10088-2, DIN 1.4410 |
Duplex 2507 Pipe & Tube |
A789, A790 | SA789, SA790 | EN 10216-5, EN 10357, DIN 1.4410 |
Duplex 2507 Fittings |
A815 | SA815 | EN 10253-4, DIN 1.4410 |
Duplex 2507 Forgings |
A182 | SA182 | EN 10222-5, DIN 1.4410 |
Duplex 2507 Bar & Wire |
A276, A479 | SA276, SA479 | EN 10088-3, DIN 1.4410 |
Super Duplex Steel 2507 is commonly known by trade names such as Alloy 32750, Zeron 100, and UNS S32750. These trade names are used to refer to the high-strength, corrosion-resistant properties of this duplex stainless steel, which make it an ideal choice for a variety of industrial and commercial applications.
Key Properties
(in annealed condition)
| Property | Alloy 2507 |
|---|---|
| Tensile Strength (ksi) | 128 (min) |
| Yield Strength (ksi) | 94 (min) |
| Elongation | 25% (min) |
| Hardness (HBW) | 290 (max) |
Chemical Composition (%)
| Element | Alloy 2507 |
|---|---|
| Carbon | 0.030 max |
| Manganese | 1.20 max |
| Phosphorus | 0.035 max |
| Sulfur | 0.020 max |
| Silicon | 1.00 max |
| Chromium | 24.0-26.0 |
| Nickel | 6.00-8.00 |
| Molybdenum | 3.00-5.00 |
| Nitrogen | 0.24-0.32 |
| Iron | Balance |
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