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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.

Iron (Fe) 78.8 to 84.1
Chromium (Cr) 15.5 to 17.5
Manganese (Mn) 0 to 1.5
Silicon (Si) 0 to 1.0
Molybdenum (Mo) 0.2 to 0.6
Sulfur (S) 0.15 to 0.35
Carbon (C) 0.1 to 0.17
Phosphorus (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