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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


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


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)


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.

Iron (Fe) 83.8 to 87.2
Chromium (Cr) 11.5 to 12.5
Nickel (Ni) 0.8 to 1.5
Manganese (Mn) 0.5 to 0.8
Molybdenum (Mo) 0 to 0.5
Silicon (Si) 0 to 0.4
Copper (Cu) 0 to 0.3
Carbon (C) 0 to 0.1
Vanadium (V) 0 to 0.080
Phosphorus (P) 0 to 0.030
Sulfur (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