EN 1.4662 (X2CrNiMnMoCuN24-4-3-2) Stainless Steel
EN 1.4662 stainless steel is a duplex stainless steel formulated for primary forming into wrought products. 1.4662 is the EN numeric designation for this material. X2CrNiMnMoCuN24-4-3-2 is the EN chemical designation.
It can have a moderately high tensile strength among the wrought duplex stainless steels in the database.
The properties of EN 1.4662 stainless steel include two common variations. This page shows summary ranges across both of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare EN 1.4662 stainless steel to: wrought duplex stainless steels (top), all iron alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Elastic (Young's, Tensile) Modulus
200 GPa 29 x 106 psi
Elongation at Break
28 %
Fatigue Strength
430 to 450 MPa 62 to 65 x 103 psi
Poisson's Ratio
0.27
Shear Modulus
79 GPa 12 x 106 psi
Shear Strength
520 to 540 MPa 76 to 78 x 103 psi
Tensile Strength: Ultimate (UTS)
810 to 830 MPa 120 x 103 psi
Tensile Strength: Yield (Proof)
580 to 620 MPa 84 to 89 x 103 psi
Thermal Properties
Latent Heat of Fusion
290 J/g
Maximum Temperature: Corrosion
440 °C 830 °F
Maximum Temperature: Mechanical
1090 °C 1990 °F
Melting Completion (Liquidus)
1430 °C 2600 °F
Melting Onset (Solidus)
1380 °C 2520 °F
Specific Heat Capacity
480 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
15 W/m-K 8.4 BTU/h-ft-°F
Thermal Expansion
13 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
2.2 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.5 % IACS
Otherwise Unclassified Properties
Base Metal Price
16 % relative
Density
7.7 g/cm3 480 lb/ft3
Embodied Carbon
3.2 kg CO2/kg material
Embodied Energy
45 MJ/kg 19 x 103 BTU/lb
Embodied Water
170 L/kg 20 gal/lb
Common Calculations
PREN (Pitting Resistance)
33
Resilience: Ultimate (Unit Rupture Work)
210 MJ/m3
Resilience: Unit (Modulus of Resilience)
840 to 940 kJ/m3
Stiffness to Weight: Axial
15 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
29 to 30 points
Strength to Weight: Bending
25 points
Thermal Diffusivity
3.9 mm2/s
Thermal Shock Resistance
22 points
Alloy Composition
Among wrought stainless steels, the composition of EN 1.4662 stainless steel is notable for containing comparatively high amounts of manganese (Mn) and chromium (Cr). Manganese is used to improve ductility at elevated temperatures. It also permits a higher nitrogen content than would otherwise be possible. Chromium is the defining alloying element of stainless steel. Higher chromium content imparts additional corrosion resistance.
| Fe | 62.6 to 70.2 | |
| Cr | 23 to 25 | |
| Ni | 3.0 to 4.5 | |
| Mn | 2.5 to 4.0 | |
| Mo | 1.0 to 2.0 | |
| Cu | 0.1 to 0.8 | |
| Si | 0 to 0.7 | |
| N | 0.2 to 0.3 | |
| P | 0 to 0.035 | |
| C | 0 to 0.030 | |
| S | 0 to 0.0050 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
Duplex Stainless Steels, Iris Alvarez-Armas and Suzanne Degallaix-Moreuil (editors), 2009
Duplex Stainless Steels: Microstructure, Properties and Applications, Robert N. Gunn (editor), 1997
EN 10088-2: Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes
EN 10088-1: Stainless steels - Part 1: List of stainless steels
Corrosion of Stainless Steels, A. John Sedriks, 1996
Advances in Stainless Steels, Baldev Raj et al. (editors), 2010