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EN 1.4877 (X6NiCrNbCe32-27) Stainless Steel

EN 1.4877 stainless steel is a duplex stainless steel formulated for primary forming into wrought products. Cited properties are appropriate for the solution annealed (AT) condition. 1.4877 is the EN numeric designation for this material. X6NiCrNbCe32-27 is the EN chemical designation.

It has a very low thermal conductivity among wrought duplex stainless steels. In addition, it has a very high base cost and a fairly low electrical conductivity.

The graph bars on the material properties cards below compare EN 1.4877 stainless steel to: wrought 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

Brinell Hardness

190

Elastic (Young's, Tensile) Modulus

200 GPa 29 x 106 psi

Elongation at Break

36 %

Fatigue Strength

170 MPa 24 x 103 psi

Poisson's Ratio

0.28

Shear Modulus

79 GPa 11 x 106 psi

Shear Strength

420 MPa 61 x 103 psi

Tensile Strength: Ultimate (UTS)

630 MPa 91 x 103 psi

Tensile Strength: Yield (Proof)

200 MPa 29 x 103 psi

Thermal Properties

Latent Heat of Fusion

310 J/g

Maximum Temperature: Corrosion

560 °C 1050 °F

Maximum Temperature: Mechanical

1150 °C 2100 °F

Melting Completion (Liquidus)

1400 °C 2560 °F

Melting Onset (Solidus)

1360 °C 2470 °F

Specific Heat Capacity

470 J/kg-K 0.11 BTU/lb-°F

Thermal Conductivity

12 W/m-K 6.9 BTU/h-ft-°F

Thermal Expansion

15 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

1.8 % IACS

Electrical Conductivity: Equal Weight (Specific)

2.0 % IACS

Otherwise Unclassified Properties

Base Metal Price

37 % relative

Density

8.0 g/cm3 500 lb/ft3

Embodied Carbon

6.2 kg CO2/kg material

Embodied Energy

89 MJ/kg 38 x 103 BTU/lb

Embodied Water

220 L/kg 27 gal/lb

Common Calculations

PREN (Pitting Resistance)

28

Resilience: Ultimate (Unit Rupture Work)

180 MJ/m3

Resilience: Unit (Modulus of Resilience)

100 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

24 points

Strength to Weight: Axial

22 points

Strength to Weight: Bending

20 points

Thermal Diffusivity

3.2 mm2/s

Thermal Shock Resistance

15 points

Alloy Composition

Among wrought stainless steels, the composition of EN 1.4877 stainless steel is notable for including cerium (Ce) and containing a comparatively high amount of chromium (Cr). Cerium is used to improve high temperature oxidation resistance. Chromium is the defining alloying element of stainless steel. Higher chromium content imparts additional corrosion resistance.

Iron (Fe) 36.4 to 42.3
Nickel (Ni) 31 to 33
Chromium (Cr) 26 to 28
Niobium (Nb) 0.6 to 1.0
Manganese (Mn) 0 to 1.0
Silicon (Si) 0 to 0.3
Cerium (Ce) 0.050 to 0.1
Carbon (C) 0.040 to 0.080
Nitrogen (N) 0 to 0.1
Aluminum (Al) 0 to 0.025
Phosphorus (P) 0 to 0.020
Sulfur (S) 0 to 0.010

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

Followup Questions

Similar Alloys

Further Reading

EN 10095: Heat resisting steels and nickel alloys

Duplex Stainless Steels, Iris Alvarez-Armas and Suzanne Degallaix-Moreuil (editors), 2009

Duplex Stainless Steels: Microstructure, Properties and Applications, Robert N. Gunn (editor), 1997

EN 10088-1: Stainless steels - Part 1: List of stainless steels

Corrosion of Stainless Steels, A. John Sedriks, 1996

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