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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.

Iron (Fe) 62.6 to 70.2
Chromium (Cr) 23 to 25
Nickel (Ni) 3.0 to 4.5
Manganese (Mn) 2.5 to 4.0
Molybdenum (Mo) 1.0 to 2.0
Copper (Cu) 0.1 to 0.8
Silicon (Si) 0 to 0.7
Nitrogen (N) 0.2 to 0.3
Phosphorus (P) 0 to 0.035
Carbon (C) 0 to 0.030
Sulfur (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