Duplex & Super Duplex
Duplex and Super Duplex alloys, standing as stalwart materials within the metallurgical realm, signify an amalgamation of enhanced strength, exceptional corrosion resistance, and high durability. At Montex Tubes Industries, we uphold these alloys as a cornerstone of our superior offerings.
Types of Duplex & Super Duplex: Duplex alloys are a fusion of ferritic and austenitic stainless steel, while Super Duplex alloys possess an elevated level of chromium, molybdenum, and nitrogen, offering heightened corrosion resistance.
Materials and Composition: Duplex and Super Duplex alloys comprise a blend of various elements such as chromium, nickel, molybdenum, and nitrogen, ensuring superior mechanical and corrosion-resistant properties.
Properties:
Corrosion Resistance: Renowned for their remarkable resistance to various corrosive environments, these alloys excel in challenging conditions, offering stability in harsh chemical and marine settings.
Strength and Toughness: Exhibiting a unique balance between strength and toughness, these alloys ensure high durability and resilience against extreme temperatures and pressures.
Pitting and Crevice Resistance: Both Duplex and Super Duplex alloys display exceptional resistance to pitting and crevice corrosion, making them ideal for critical applications.
Uniformity and Versatility: These alloys offer uniform properties throughout their structure, maintaining mechanical strength, thus proving highly versatile in multiple industries.
Shapes and Sizes: Available in various forms such as pipes, tubes, sheets, plates, bars, and fittings, catering to diverse dimensional requirements across an array of applications.
Technical Specifications: Specifications are tailored according to the specific alloy composition, offering distinct physical and mechanical properties.
Applications and Industries: Duplex and Super Duplex alloys find extensive applications in oil and gas, chemical processing, desalination, marine engineering, and more, emphasizing their versatility and reliability.
Standards Compliance: Adherence to industry standards like ASTM, ASME, and API ensures the high quality and performance of these alloys.
Our Commitment at Montex Tubes Industries: At Montex Tubes Industries, we pledge to deliver top-notch Duplex and Super Duplex solutions that comply with rigorous industry standards, ensuring reliability and performance.
Duplex Stainless Steel Composition
| Grade | EN No/UNS | Type | Approx Composition | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Cr | Ni | Mo | N | Mn | W | Cu | |||
| 2101 LDX | 1.4162/ S32101 | Lean | 21.5 | 1.5 | 0.3 | 0.22 | 5 | – | – |
| DX2202 | 1.4062/ S32202 | Lean | 23 | 2.5 | 0.3 | 0.2 | 1.5 | – | – |
| RDN 903 | 1.4482/ S32001 | Lean | 20 | 1.8 | 0.2 | 0.11 | 4.2 | – | – |
| 2304 | 1.4362/ | Lean | 23 | 4.8 | 0.3 | 0.10 | – | – | – |
| 2205 | 1.4462/ S31803/ S32205 | Standard | 22 | 5.7 | 3.1 | 0.17 | – | – | – |
| 2507 | 1.4410/ S32750 | Super | 25 | 7 | 4 | 0.27 | – | – | – |
| Zeron 100 | 1.4501/ S32760 | Super | 25 | 7 | 3.2 | 0.25 | – | 0.7 | 0.7 |
| Ferrinox 255/ Uranus 2507Cu | 1.4507/ S32520/ S32550 | Super | 25 | 6.5 | 3.5 | 0.25 | – | – | 1.5 |
Duplex Stainless Steel Equivalent
| Grade | EN No / UNS | Type | Typical PREN |
|---|---|---|---|
| 2101 LDX | 1.4162/ S32101 | Duplex | 26 |
| 2304 | 1.4362/ S32304 | Duplex | 26 |
| DX2202 | 1.4062/ S32202 | Duplex | 27 |
| Duplex 2205 | 1.4462/ S31803/ S32205 | Duplex | 35 |
| Zeron 100 | 1.4501/ S32760 | Duplex | 41 |
| Ferrinox 255/ Uranus 2507Cu | 1.4507/ S32520/ S32550 | Duplex | 41 |
| Super Duplex 2507 | 1.4410/ S32750 | Duplex | 43 |
| 6% Mo | 1.4547/ S31254 | Austenitic | 44 |
- All material sourced from Western European mills and meeting leading International standards
- ASTM A240, ASME SA240, BS EN 10028-7, BS EN 10088-2 and BS EN 10088-4
- EN 10088/2, EN 10088/4 and CE Marking
- NACE MR 0175/ISO 15156 Certification
- All our stock is certified to Norsok MDS D45 with 3.2 certs