What material is X2CrNiMoN22-5-3 equivalent to?
Apr 03, 2026
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What is EN 10088 X2CrNiMoN22-5-3 material grade?
EN 10088 X2CrNiMoN22-5-3 (Material No. 1.4462) is a widely utilized duplex stainless steel (often referred to as Duplex 2205 or AISI 318LN) characterized by a mixed austenitic-ferritic microstructure, exceptionally high strength (approximately double that of 304/316 stainless steel), and superior corrosion resistance. It exhibits outstanding resistance to chloride-induced pitting, crevice corrosion, and stress corrosion cracking (SCC). This material can be fabricated into a variety of practical product forms, including plates, coils, tubes, bars, wires, and more.
X2CrNiMoN22-5-3 stainless steel equivalent materials
X2CrNiMoN22-5-3 is a duplex stainless steel, commonly known as 1.4462, with key equivalents including UNS S31803, UNS S32205, ASTM A182 F51, ASTM A240 2205, and AISI 318LN, all representing this high-strength, corrosion-resistant austenitic-ferritic grade used widely in demanding environments like shipbuilding and petrochemicals.
| EU EN |
USA - |
France AFNOR |
England BS |
Sweden SS |
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| X2CrNiMoN22-5-3 |
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What are the typical standards for X2CrNiMoN22-5-3?
EN 10088-3 (European Stainless Steel Standard)
ASTM A240/A240M (Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications)
UNS S32250 (Unified Numbering System)
X2CrNiMoN 22-5-3 Chemical Composition (%)
| Element | C | Si | Mn | P | S | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|---|
|
min |
- | - | - | - | - | 21 | 4.5 | 2.5 | 0.1 |
| max | 0.03 | 1 | 2 | 0.035 | 0.015 | 23 | 6.5 | 3.5 |
0.22 |
Physical Properties
| Elastic Modulus at Various Temperatures (°C) | Coefficient of Thermal Expansion Between 20°C and Various Temperatures | Thermal conductivity | Specific Heat Capacity | Resistivity | magnetic | |||||
| 20 | 100 | 200 | 300 | 100°C | 200°C | 300°C | 20°C | 20°C | 20°C | |
| GPa | 10-6K-1 | W/m.K | J/kg.K | Ω.mm2/m | ||||||
| 200 | 194 | 186 | 180 | 13 | 13.5 | 14 | 15 | 500 | 0.8 | 有 |
X2CrNiMoN22-5-3 Mechanical Properties
| condition | Heat Treatment or Condition | Tensile Strength σb MPa |
Yield Point σs MPa |
Elongation at Fracture (or Elongation) δ % |
Impact energy absorbed KV2 J |
|---|---|---|---|---|---|
| C：T ≤ 6 | +AT | 660~950 | T＜300 mm： (l: ≥465) T ≥ 300 mm： (t: ≥480) ① |
T ＜ 3mm: ≥20 T ≥ 3mm: ≥ 20 ②③ |
20℃： (l: ≥100;t: ≥60) -40℃： (t: ≥40) |
| H：T ≤ 12 | +AT | 660~950 | T＜300 mm： (l: ≥445) T ≥ 300 mm： (t: ≥460) ① |
T ＜ 3mm: ≥25 T ≥ 3mm: ≥ 25 ②③ |
20℃： (l: ≥100;t: ≥60) -40℃： (t: ≥40) |
| P：T ≤ 75 | +AT | 640~840 | T＜300 mm： (l: ≥445) T ≥ 300 mm： (t: ≥460) ① |
T ＜ 3mm: ≥25 T ≥ 3mm: ≥ 25 ②③ |
20℃： (l: ≥100;t: ≥60) -40℃： (t: ≥40) |
Minimum Yield Strength at Elevated Temperatures
| Material designation | Heat treatment condition |
Minimum 0.2% proof strength Rp0.2,MPa at a temperature (in°C) of: |
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| Name | Number | 100 | 150 | 200 | 250 | ||
| X2CrNiMoN22-5-3 | 1.4462 | +AT | 360 | 335 | 315 | 300 | |
Minimum Tensile Strength at Elevated Temperatures
| Material designation | Heat treatment condition |
Minimum tensile strength,MPa at a temperature (in°C) of: |
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| Name | Number | 100 | 150 | 200 | 250 | ||
| X2CrNiMoN22-5-3 | 1.4462 | +AT | 590 | 570 | 550 | 540 | |
EN 1.4462 Heat Treatment
| Material designation | Hot forming | Heat treatment symbol |
Solution anneailing ① |
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| Name | Number | Temperature ℃ |
Type of cooling |
Temperature ℃ ② |
Type of cooling |
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| X2CrNiMoN22-5-3 | 1.4462 | 1150 to 950 | air | +AT | 1060 ± 40 | water,air |
1.4462 Stainless Steel: Weldability
1.4462 stainless steel can be welded using a variety of common welding methods, such as ARC, TIG, and laser welding. Gas welding is not suitable.
1.4462 Stainless Steel: Forgeability
Duplex stainless steel 1.4462 exhibits moderate forgeability. Forging should be performed within a temperature range of 1200°C to 900°C, followed by rapid cooling.
1.4462 Stainless Steel: Corrosion Resistance
1.4462 duplex stainless steel demonstrates excellent corrosion resistance in organic acids, phosphoric acid, and chloride-containing media (with a PREN value ranging from 30.9 to 38.0). Due to its austenitic-ferritic microstructure, the material is highly resistant to stress corrosion cracking and intergranular corrosion. It retains its resistance to intergranular corrosion even after welding. At room temperature, this material is also resistant to seawater, steam, and nitric acid; however, pitting corrosion may occur in environments with high concentrations of salt (NaCl).
1.4462 Stainless Steel Supplier
As China's leading manufacturer of stainless steel products, Gnee has a history of nearly 20 years. We support customization, and our professional team provides you with 2205 duplex stainless steel solutions, in rich sizes & shapes, such as alloy 2205 duplex pipes & plates & rods & coils & pipe fitting & flangs, etc., no minimum order quantity, welcome to inquire!
| Product Category | Specifications & Details |
|---|---|
| Hot-Rolled Plates / Coils | Thickness: 1.5 mm – 300 mmWidth: 1500 mm – 3200 mm |
| Cold-Rolled Plates / Coils / Strips |
Thickness: 0.1 mm – 4.0 mm Common thicknesses: 0.5 mm, 0.8 mm, 1.0 mm, 2.0 mm Common widths: 1219 mm, 1250 mmSurface finishes: 2B, BA |
| Bars - Hot-Rolled Round Bars / Black Bars | Diameter: 6 mm – 400 mm |
| Bars - Cold-Drawn Bright Round Bars / Precision-Ground Bars | Diameter: 1.0 mm – 100 mm |
| Square Billets / Square Bars | Max. size: 300 mm × 400 mm |
| Welded Steel Tubes | Outer diameter: 10 mm – 1600 mm |
| Seamless Steel Tubes | Outer diameter: 6 mm – 508 mm |
If you require materials for a specific engineering project, GNEE provides a Mill Test Certificate (Quality Guarantee) bearing our official seal to verify the actual chemical composition.
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