EN 1.3967 (GX2CrNiMnMoNNb21-16-5-3) Cast Stainless Steel
EN 1.3967 stainless steel is an austenitic stainless steel formulated for casting. Cited properties are appropriate for the solution annealed (AT) condition. 1.3967 is the EN numeric designation for this material. GX2CrNiMnMoNNb21-16-5-3 is the EN chemical designation.
It has a very high tensile strength among the cast austenitic stainless steels in the database.
The graph bars on the material properties cards below compare EN 1.3967 stainless steel to: cast austenitic 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
200
Elastic (Young's, Tensile) Modulus
200 GPa 29 x 106 psi
Elongation at Break
22 %
Fatigue Strength
240 MPa 34 x 103 psi
Impact Strength: V-Notched Charpy
74 J 55 ft-lb
Poisson's Ratio
0.28
Shear Modulus
79 GPa 11 x 106 psi
Tensile Strength: Ultimate (UTS)
690 MPa 99 x 103 psi
Tensile Strength: Yield (Proof)
350 MPa 51 x 103 psi
Thermal Properties
Latent Heat of Fusion
300 J/g
Maximum Temperature: Corrosion
440 °C 830 °F
Maximum Temperature: Mechanical
1070 °C 1950 °F
Melting Completion (Liquidus)
1430 °C 2600 °F
Melting Onset (Solidus)
1380 °C 2520 °F
Specific Heat Capacity
470 J/kg-K 0.11 BTU/lb-°F
Thermal Expansion
16 µm/m-K
Otherwise Unclassified Properties
Base Metal Price
25 % relative
Density
7.9 g/cm3 490 lb/ft3
Embodied Carbon
4.8 kg CO2/kg material
Embodied Energy
66 MJ/kg 28 x 103 BTU/lb
Embodied Water
180 L/kg 22 gal/lb
Common Calculations
PREN (Pitting Resistance)
36
Resilience: Ultimate (Unit Rupture Work)
130 MJ/m3
Resilience: Unit (Modulus of Resilience)
310 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
24 points
Strength to Weight: Bending
22 points
Thermal Shock Resistance
15 points
Alloy Composition
Among cast stainless steels, the composition of EN 1.3967 stainless steel is notable for containing a comparatively high amount of manganese (Mn) and including niobium (Nb). Manganese is used to improve ductility at elevated temperatures. It also permits a higher nitrogen content than would otherwise be possible. Niobium is primarily used to improve yield strength, particularly at elevated temperatures.
| Fe | 50.3 to 57.8 | |
| Cr | 20 to 21.5 | |
| Ni | 15 to 17 | |
| Mn | 4.0 to 6.0 | |
| Mo | 3.0 to 3.5 | |
| Si | 0 to 1.0 | |
| N | 0.2 to 0.35 | |
| Nb | 0 to 0.25 | |
| C | 0 to 0.030 | |
| P | 0 to 0.025 | |
| S | 0 to 0.010 |
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
Austenitic Stainless Steels: Microstructure and Mechanical Properties, P. Marshall, 1984
Advances in Stainless Steels, Baldev Raj et al. (editors), 2010