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Duplex stainless steel plate, it is a stainless steel material with special microstructure. The main alloying elements of Duplex stainless steel include chromium (Cr), nickel (Ni), and may contain molybdenum (Mo), copper (Cu), niobium (Nb), titanium (Ti), nitrogen (N) and so on.
Super duplex steel plate has similar dual-phase structures, but super duplex offers a higher alloy content, greater yield and tensile strength, which translates to increased performance.
High strength: The yield strength of Duplex stainless steel can reach 400~550MPa, which is twice that of general stainless steel, so it can save material and reduce the manufacturing cost of equipment.
Good plasticity and toughness: Compared with ferritic stainless steel, Duplex stainless steel has better plasticity and toughness, no room temperature brittleness.
Excellent corrosion resistance: Duplex stainless steel has excellent resistance to pore corrosion, crevice corrosion, stress corrosion and corrosion fatigue performance, especially in the medium of the environment is more severe conditions, such as seawater containing high chloride ions, its corrosion resistance is significantly better than the general austenitic stainless steel.
Good welding performance: Duplex stainless steel welding performance is excellent, can be convenient for a variety of welding operations
| Name | UNS | En No. | C | Mn | Si | Cr | Ni | Mo | N | Cu | Other | PREN |
| 2101 | S32101 | 1.4162 | 0.04 | 4.0–6.0 | 1 | 21.0–22.0 | 1.35–1.70 | 0.1–0.8 | 0.20–0.25 | 0.1–0.8 | - | 25–27 |
| 2202 | S32202 | 1.4062 | 0.03 | 2 | 1 | 21.5–24.0 | 1.00–2.80 | 0.45 | 0.18–0.26 | - | - | 25–28 |
| 2304 | S32304 | 1.4362 | 0.03 | 2.5 | 1 | 21.5–24.5 | 3.0–5.5 | 0.05–0.6 | - | - | - | 25–28 |
| 2102 | S82011 | - | 0.03 | 2.0–3.0 | 1 | 20.5–23.5 | 1.0–2.0 | 0.1–1.0 | 0.15–0.27 | 0.50–0.60 | - | 25–27 |
| 2205 | S31803 | 1.4462 | 0.03 | 2 | 1 | 21.0–23.0 | 4.5–6.5 | 2.5–3.5 | 0.08–0.20 | - | - | 33–35 |
| 2205 | S32205 | 1.4462 | 0.03 | 2 | 1 | 22.0–23.0 | 4.5–6.5 | 3.0–3.5 | 0.14–0.20 | - | - | 35–36 |
| 255 | S32550 | S32760 | 0.04 | 1.5 | 1 | 24.0–27.0 | 4.5–6.5 | 2.9–3.9 | 0.10–0.25 | 1.5–2.5 | - | 38–41 |
| 2507 | S32750 | 1.441 | 0.03 | 1.2 | 0.8 | 24.0–26.0 | 6.0–8.0 | 3.0–5.0 | 0.24–0.32 | 0.5 | - | 40–43 |
| Z100 | S32760 | 1.4501 | 0.03 | 1 | 1 | 24.0–26.0 | 6.0–8.0 | 3.0–4.0 | 0.20–0.30 | 0.50–1.00 | W 0.5–1.0 | 40–43 |
| 2707 | S32707 | - | 0.03 | 1.5 | 0.5 | 26.0–29.0 | 5.5–9.5 | 4.0–5.0 | 0.30–0.50 | 1 | Co 0.5–2.0 | 49–50 |
| S33207 | - | 0.03 | 1.5 | 0.8 | 29.0–33.0 | 6.0–9.0 | 3.0–5.0 | 0.40–0.60 | 1 | 52–53 |
Steel plate and plate cut from coil can be used in a variety of industries and applications, as it is a very versatile and commonly used form of steel.
Duplex stainless steel can be used in the manufacture of submarine pipelines, oil and gas drilling platforms and other equipment with high corrosion resistance requirements.
It can be used for vessels and pipelines handling corrosive chemicals, as well as chemical equipment, reactors, distillation towers, etc.
it can be used in the manufacture of food processing equipment, food storage containers and other equipment with high hygiene requirements.
can be used for ships, offshore platforms and coastal facilities, as well as piping systems and heat exchangers in desalination systems
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