EN 1.4104 (X14CrMoS17) Stainless Steel
EN 1.4104 stainless steel is a martensitic stainless steel formulated for primary forming into wrought products. 1.4104 is the EN numeric designation for this material. X14CrMoS17 is the EN chemical designation.
The properties of EN 1.4104 stainless steel include three common variations. This page shows summary ranges across all of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare EN 1.4104 stainless steel to: wrought 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 28 x 106 psi
Elongation at Break
11 to 23 %
Fatigue Strength
230 to 310 MPa 34 to 44 x 103 psi
Poisson's Ratio
0.28
Shear Modulus
77 GPa 11 x 106 psi
Shear Strength
400 to 450 MPa 58 to 65 x 103 psi
Tensile Strength: Ultimate (UTS)
630 to 750 MPa 91 to 110 x 103 psi
Tensile Strength: Yield (Proof)
350 to 560 MPa 50 to 81 x 103 psi
Thermal Properties
Latent Heat of Fusion
280 J/g
Maximum Temperature: Corrosion
410 °C 760 °F
Maximum Temperature: Mechanical
860 °C 1570 °F
Melting Completion (Liquidus)
1440 °C 2620 °F
Melting Onset (Solidus)
1390 °C 2540 °F
Specific Heat Capacity
480 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
25 W/m-K 14 BTU/h-ft-°F
Thermal Expansion
10 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
2.5 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.9 % IACS
Otherwise Unclassified Properties
Base Metal Price
8.5 % relative
Density
7.7 g/cm3 480 lb/ft3
Embodied Carbon
2.2 kg CO2/kg material
Embodied Energy
30 MJ/kg 13 x 103 BTU/lb
Embodied Water
120 L/kg 14 gal/lb
Common Calculations
PREN (Pitting Resistance)
18
Resilience: Ultimate (Unit Rupture Work)
77 to 120 MJ/m3
Resilience: Unit (Modulus of Resilience)
310 to 800 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
23 to 27 points
Strength to Weight: Bending
21 to 24 points
Thermal Diffusivity
6.7 mm2/s
Thermal Shock Resistance
22 to 27 points
Alloy Composition
Among wrought stainless steels, the composition of EN 1.4104 stainless steel is notable for containing a comparatively high amount of chromium (Cr). Chromium is the defining alloying element of stainless steel. Higher chromium content imparts additional corrosion resistance.
| Fe | 78.8 to 84.1 | |
| Cr | 15.5 to 17.5 | |
| Mn | 0 to 1.5 | |
| Si | 0 to 1.0 | |
| Mo | 0.2 to 0.6 | |
| S | 0.15 to 0.35 | |
| C | 0.1 to 0.17 | |
| P | 0 to 0.040 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
EN 10088-3: Stainless steels - Part 3: Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes
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