EN 1.3960 (Gx2CrNiMoN18-140) Cast Stainless Steel
EN 1.3960 stainless steel is a duplex stainless steel formulated for casting. Cited properties are appropriate for the solution annealed (AT) condition. 1.3960 is the EN numeric designation for this material. Gx2CrNiMoN18-140 is the EN chemical designation.
It has a moderately high ductility among the cast duplex stainless steels in the database.
The graph bars on the material properties cards below compare EN 1.3960 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 29 x 106 psi
Elongation at Break
34 %
Fatigue Strength
220 MPa 32 x 103 psi
Impact Strength: V-Notched Charpy
90 J 66 ft-lb
Poisson's Ratio
0.28
Shear Modulus
78 GPa 11 x 106 psi
Tensile Strength: Ultimate (UTS)
590 MPa 86 x 103 psi
Tensile Strength: Yield (Proof)
270 MPa 40 x 103 psi
Thermal Properties
Latent Heat of Fusion
290 J/g
Maximum Temperature: Corrosion
410 °C 780 °F
Maximum Temperature: Mechanical
970 °C 1770 °F
Melting Completion (Liquidus)
1440 °C 2630 °F
Melting Onset (Solidus)
1400 °C 2550 °F
Specific Heat Capacity
470 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
15 W/m-K 8.4 BTU/h-ft-°F
Thermal Expansion
12 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
2.2 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.6 % IACS
Otherwise Unclassified Properties
Base Metal Price
21 % relative
Density
7.9 g/cm3 490 lb/ft3
Embodied Carbon
4.1 kg CO2/kg material
Embodied Energy
57 MJ/kg 24 x 103 BTU/lb
Embodied Water
160 L/kg 19 gal/lb
Common Calculations
PREN (Pitting Resistance)
30
Resilience: Ultimate (Unit Rupture Work)
170 MJ/m3
Resilience: Unit (Modulus of Resilience)
190 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
21 points
Strength to Weight: Bending
20 points
Thermal Diffusivity
3.9 mm2/s
Thermal Shock Resistance
17 points
Alloy Composition
Among cast stainless steels, the composition of EN 1.3960 stainless steel is notable for containing a comparatively high amount of nickel (Ni) and including nitrogen (N). Nickel is primarily used to achieve a specific microstructure. In addition, it has a beneficial effect on mechanical properties and certain types of corrosion. Nitrogen has a substantial strengthening effect, but has a complex (frequently negative) relationship with corrosion resistance.
| Fe | 60.2 to 67.9 | |
| Cr | 16.5 to 18.5 | |
| Ni | 13 to 15 | |
| Mo | 2.5 to 3.0 | |
| Mn | 0 to 2.0 | |
| Si | 0 to 1.0 | |
| N | 0.15 to 0.25 | |
| P | 0 to 0.035 | |
| C | 0 to 0.030 | |
| S | 0 to 0.020 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
ISO 19960: Cast steels and alloys with special physical properties
Duplex Stainless Steels, Iris Alvarez-Armas and Suzanne Degallaix-Moreuil (editors), 2009
Duplex Stainless Steels: Microstructure, Properties and Applications, Robert N. Gunn (editor), 1997
Advances in Stainless Steels, Baldev Raj et al. (editors), 2010