EN 1.4107 (GX8CrNi12-1) Cast Stainless Steel
EN 1.4107 stainless steel is a ferritic stainless steel formulated for casting. 1.4107 is the EN numeric designation for this material. GX8CrNi12-1 is the EN chemical designation. It can have the highest tensile strength and has the highest thermal conductivity among cast ferritic stainless steels.
The properties of EN 1.4107 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 1.4107 stainless steel to: cast ferritic 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
190 GPa 28 x 106 psi
Elongation at Break
18 to 21 %
Fatigue Strength
260 to 350 MPa 38 to 51 x 103 psi
Impact Strength: V-Notched Charpy
45 to 50 J 33 to 37 ft-lb
Poisson's Ratio
0.28
Shear Modulus
76 GPa 11 x 106 psi
Tensile Strength: Ultimate (UTS)
620 to 700 MPa 89 to 100 x 103 psi
Tensile Strength: Yield (Proof)
400 to 570 MPa 59 to 83 x 103 psi
Thermal Properties
Latent Heat of Fusion
270 J/g
Maximum Temperature: Corrosion
390 °C 730 °F
Maximum Temperature: Mechanical
740 °C 1360 °F
Melting Completion (Liquidus)
1450 °C 2640 °F
Melting Onset (Solidus)
1410 °C 2560 °F
Specific Heat Capacity
480 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
27 W/m-K 16 BTU/h-ft-°F
Thermal Expansion
10 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
2.9 % IACS
Electrical Conductivity: Equal Weight (Specific)
3.3 % IACS
Otherwise Unclassified Properties
Base Metal Price
7.5 % relative
Density
7.8 g/cm3 490 lb/ft3
Embodied Carbon
2.1 kg CO2/kg material
Embodied Energy
30 MJ/kg 13 x 103 BTU/lb
Embodied Water
100 L/kg 12 gal/lb
Common Calculations
PREN (Pitting Resistance)
13
Resilience: Ultimate (Unit Rupture Work)
110 to 120 MJ/m3
Resilience: Unit (Modulus of Resilience)
420 to 840 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
22 to 25 points
Strength to Weight: Bending
21 to 22 points
Thermal Diffusivity
7.2 mm2/s
Thermal Shock Resistance
22 to 25 points
Alloy Composition
Among cast stainless steels, the composition of EN 1.4107 stainless steel is notable for including vanadium (V) and copper (Cu). Vanadium has a strong hardening effect, but this effect is particularly sensitive to the type of tempering. Copper is primarily used to improve resistance to acids.
| Fe | 83.8 to 87.2 | |
| Cr | 11.5 to 12.5 | |
| Ni | 0.8 to 1.5 | |
| Mn | 0.5 to 0.8 | |
| Mo | 0 to 0.5 | |
| Si | 0 to 0.4 | |
| Cu | 0 to 0.3 | |
| C | 0 to 0.1 | |
| V | 0 to 0.080 | |
| P | 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 4991: Steel castings for pressure purposes
Advances in Stainless Steels, Baldev Raj et al. (editors), 2010