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EN 1.4411 (GX4CrNiMo16-5-2) Cast Stainless Steel

EN 1.4411 stainless steel is a martensitic stainless steel formulated for casting. Cited properties are appropriate for the quenched and tempered condition. 1.4411 is the EN numeric designation for this material. GX4CrNiMo16-5-2 is the EN chemical designation.

It has a fairly high base cost among cast martensitic stainless steels. In addition, it has a moderately low electrical conductivity and a moderately low thermal conductivity.

The graph bars on the material properties cards below compare EN 1.4411 stainless steel to: cast martensitic 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

17 %

Fatigue Strength

370 MPa 53 x 103 psi

Impact Strength: V-Notched Charpy

68 J 50 ft-lb

Poisson's Ratio

0.28

Shear Modulus

78 GPa 11 x 106 psi

Tensile Strength: Ultimate (UTS)

870 MPa 130 x 103 psi

Tensile Strength: Yield (Proof)

600 MPa 88 x 103 psi

Thermal Properties

Latent Heat of Fusion

280 J/g

Maximum Temperature: Corrosion

410 °C 760 °F

Maximum Temperature: Mechanical

880 °C 1610 °F

Melting Completion (Liquidus)

1450 °C 2640 °F

Melting Onset (Solidus)

1410 °C 2560 °F

Specific Heat Capacity

470 J/kg-K 0.11 BTU/lb-°F

Thermal Conductivity

17 W/m-K 9.8 BTU/h-ft-°F

Thermal Expansion

11 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

13 % relative

Density

7.8 g/cm3 490 lb/ft3

Embodied Carbon

3.0 kg CO2/kg material

Embodied Energy

41 MJ/kg 17 x 103 BTU/lb

Embodied Water

130 L/kg 15 gal/lb

Common Calculations

PREN (Pitting Resistance)

22

Resilience: Ultimate (Unit Rupture Work)

130 MJ/m3

Resilience: Unit (Modulus of Resilience)

920 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

31 points

Strength to Weight: Bending

26 points

Thermal Diffusivity

4.6 mm2/s

Thermal Shock Resistance

28 points

Alloy Composition

Among cast stainless steels, the composition of EN 1.4411 stainless steel is notable for containing a comparatively high amount of molybdenum (Mo). Molybdenum is used to facilitate tempering. In addition, it offers modest bonuses to a wide range of material properties.

Iron (Fe) 73.1 to 79.5
Chromium (Cr) 15 to 17
Nickel (Ni) 4.0 to 6.0
Molybdenum (Mo) 1.5 to 2.0
Manganese (Mn) 0 to 1.0
Silicon (Si) 0 to 0.8
Carbon (C) 0 to 0.060
Phosphorus (P) 0 to 0.035
Sulfur (S) 0 to 0.025

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Similar Alloys

Further Reading

EN 10283: Corrosion resistant steel castings

Corrosion of Stainless Steels, A. John Sedriks, 1996

Advances in Stainless Steels, Baldev Raj et al. (editors), 2010