EN 1.4652 (X1CrNiMoCuN24-22-8) Stainless Steel
EN 1.4652 stainless steel is a superaustenitic (highly alloyed) stainless steel formulated for primary forming into wrought products. Cited properties are appropriate for the solution annealed (AT) condition. 1.4652 is the EN numeric designation for this material. X1CrNiMoCuN24-22-8 is the EN chemical designation.
It has a fairly high electrical conductivity among wrought superaustenitic stainless steels. In addition, it has the lowest thermal conductivity and a very high tensile strength.
The graph bars on the material properties cards below compare EN 1.4652 stainless steel to: wrought superaustenitic 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
Brinell Hardness
270
Elastic (Young's, Tensile) Modulus
210 GPa 30 x 106 psi
Elongation at Break
45 %
Fatigue Strength
450 MPa 65 x 103 psi
Impact Strength: V-Notched Charpy
90 J 67 ft-lb
Poisson's Ratio
0.28
Shear Modulus
81 GPa 12 x 106 psi
Shear Strength
610 MPa 89 x 103 psi
Tensile Strength: Ultimate (UTS)
880 MPa 130 x 103 psi
Tensile Strength: Yield (Proof)
490 MPa 70 x 103 psi
Thermal Properties
Latent Heat of Fusion
310 J/g
Maximum Temperature: Corrosion
440 °C 830 °F
Maximum Temperature: Mechanical
1100 °C 2010 °F
Melting Completion (Liquidus)
1460 °C 2650 °F
Melting Onset (Solidus)
1410 °C 2560 °F
Specific Heat Capacity
460 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
9.8 W/m-K 5.7 BTU/h-ft-°F
Thermal Expansion
15 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
34 % relative
Density
8.0 g/cm3 500 lb/ft3
Embodied Carbon
6.4 kg CO2/kg material
Embodied Energy
87 MJ/kg 37 x 103 BTU/lb
Embodied Water
220 L/kg 26 gal/lb
Common Calculations
PREN (Pitting Resistance)
57
Resilience: Ultimate (Unit Rupture Work)
340 MJ/m3
Resilience: Unit (Modulus of Resilience)
570 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
30 points
Strength to Weight: Bending
25 points
Thermal Diffusivity
2.6 mm2/s
Thermal Shock Resistance
20 points
Alloy Composition
Among wrought stainless steels, the composition of EN 1.4652 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 | 38.3 to 46.3 | |
| Cr | 23 to 25 | |
| Ni | 21 to 23 | |
| Mo | 7.0 to 8.0 | |
| Mn | 2.0 to 4.0 | |
| N | 0.45 to 0.55 | |
| Cu | 0.3 to 0.6 | |
| Si | 0 to 0.5 | |
| P | 0 to 0.030 | |
| C | 0 to 0.020 | |
| S | 0 to 0.0050 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
EN 10088-2: Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes
EN 10088-3: Stainless steels - Part 3: Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes
EN 10088-1: Stainless steels - Part 1: List of stainless steels
Corrosion of Austenitic Stainless Steels: Mechanism, Mitigation and Monitoring, H. S. Khatak and B. Raj (editors), 2002
Austenitic Stainless Steels: Microstructure and Mechanical Properties, P. Marshall, 1984
Advances in Stainless Steels, Baldev Raj et al. (editors), 2010