EN 1.4468 (GX2CrNiMoN25-6-3) Cast Stainless Steel
EN 1.4468 stainless steel is a duplex stainless steel formulated for casting. Cited properties are appropriate for the solution annealed (AT) condition. 1.4468 is the EN numeric designation for this material. GX2CrNiMoN25-6-3 is the EN chemical designation.
The graph bars on the material properties cards below compare EN 1.4468 stainless steel to: cast 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 30 x 106 psi
Elongation at Break
25 %
Fatigue Strength
380 MPa 55 x 103 psi
Impact Strength: V-Notched Charpy
56 J 41 ft-lb
Poisson's Ratio
0.27
Shear Modulus
80 GPa 12 x 106 psi
Tensile Strength: Ultimate (UTS)
730 MPa 110 x 103 psi
Tensile Strength: Yield (Proof)
550 MPa 79 x 103 psi
Thermal Properties
Latent Heat of Fusion
300 J/g
Maximum Temperature: Corrosion
450 °C 840 °F
Maximum Temperature: Mechanical
1100 °C 2010 °F
Melting Completion (Liquidus)
1440 °C 2630 °F
Melting Onset (Solidus)
1400 °C 2540 °F
Specific Heat Capacity
480 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
17 W/m-K 9.8 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
19 % relative
Density
7.8 g/cm3 490 lb/ft3
Embodied Carbon
3.8 kg CO2/kg material
Embodied Energy
53 MJ/kg 23 x 103 BTU/lb
Embodied Water
180 L/kg 21 gal/lb
Common Calculations
PREN (Pitting Resistance)
38
Resilience: Ultimate (Unit Rupture Work)
170 MJ/m3
Resilience: Unit (Modulus of Resilience)
730 kJ/m3
Stiffness to Weight: Axial
15 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
26 points
Strength to Weight: Bending
23 points
Thermal Diffusivity
4.6 mm2/s
Thermal Shock Resistance
20 points
Alloy Composition
Among cast stainless steels, the composition of EN 1.4468 stainless steel is notable for containing a comparatively high amount of chromium (Cr) and including nitrogen (N). Chromium is the defining alloying element of stainless steel. Higher chromium content imparts additional corrosion resistance. Nitrogen has a substantial strengthening effect, but has a complex (frequently negative) relationship with corrosion resistance.
| Fe | 59.7 to 67.4 | |
| Cr | 24.5 to 26.5 | |
| Ni | 5.5 to 7.0 | |
| Mo | 2.5 to 3.5 | |
| Mn | 0 to 2.0 | |
| Si | 0 to 1.0 | |
| N | 0.12 to 0.25 | |
| P | 0 to 0.035 | |
| C | 0 to 0.030 | |
| S | 0 to 0.025 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
ISO 11972: Corrosion-resistant cast steels for general applications
EN 10283: Corrosion resistant steel castings
Duplex Stainless Steels, Iris Alvarez-Armas and Suzanne Degallaix-Moreuil (editors), 2009
Duplex Stainless Steels: Microstructure, Properties and Applications, Robert N. Gunn (editor), 1997
Corrosion of Stainless Steels, A. John Sedriks, 1996
Advances in Stainless Steels, Baldev Raj et al. (editors), 2010