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.
| Fe | 36.4 to 42.3 | |
| Ni | 31 to 33 | |
| Cr | 26 to 28 | |
| Nb | 0.6 to 1.0 | |
| Mn | 0 to 1.0 | |
| Si | 0 to 0.3 | |
| Ce | 0.050 to 0.1 | |
| C | 0.040 to 0.080 | |
| N | 0 to 0.1 | |
| Al | 0 to 0.025 | |
| P | 0 to 0.020 | |
| 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