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EN 1.4630 (X2CrSiTi15) Stainless Steel

EN 1.4630 stainless steel is a ferritic stainless steel formulated for primary forming into wrought products. Cited properties are appropriate for the annealed condition. 1.4630 is the EN numeric designation for this material. X2CrSiTi15 is the EN chemical designation.

It has a moderately high thermal conductivity among the wrought ferritic stainless steels in the database.

The graph bars on the material properties cards below compare EN 1.4630 stainless steel to: wrought ferritic 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

190 GPa 28 x 106 psi

Elongation at Break

23 %

Fatigue Strength

170 MPa 24 x 103 psi

Poisson's Ratio

0.28

Shear Modulus

76 GPa 11 x 106 psi

Shear Strength

300 MPa 44 x 103 psi

Tensile Strength: Ultimate (UTS)

480 MPa 70 x 103 psi

Tensile Strength: Yield (Proof)

250 MPa 36 x 103 psi

Thermal Properties

Latent Heat of Fusion

290 J/g

Maximum Temperature: Corrosion

520 °C 970 °F

Maximum Temperature: Mechanical

800 °C 1470 °F

Melting Completion (Liquidus)

1440 °C 2620 °F

Melting Onset (Solidus)

1390 °C 2540 °F

Specific Heat Capacity

480 J/kg-K 0.12 BTU/lb-°F

Thermal Conductivity

28 W/m-K 16 BTU/h-ft-°F

Thermal Expansion

10 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

2.8 % IACS

Electrical Conductivity: Equal Weight (Specific)

3.3 % IACS

Otherwise Unclassified Properties

Base Metal Price

9.5 % relative

Density

7.7 g/cm3 480 lb/ft3

Embodied Carbon

2.5 kg CO2/kg material

Embodied Energy

36 MJ/kg 16 x 103 BTU/lb

Embodied Water

120 L/kg 14 gal/lb

Common Calculations

PREN (Pitting Resistance)

15

Resilience: Ultimate (Unit Rupture Work)

92 MJ/m3

Resilience: Unit (Modulus of Resilience)

160 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

17 points

Strength to Weight: Bending

18 points

Thermal Diffusivity

7.5 mm2/s

Thermal Shock Resistance

17 points

Alloy Composition

Among wrought stainless steels, the composition of EN 1.4630 stainless steel is notable for including aluminum (Al) and titanium (Ti). Aluminum is used to improve oxidation resistance. It can also enhance the effects of heat treatment. Titanium is used to broadly improve mechanical properties.

Iron (Fe) 77.1 to 86.7
Chromium (Cr) 13 to 16
Silicon (Si) 0.2 to 1.5
Aluminum (Al) 0 to 1.5
Manganese (Mn) 0 to 1.0
Titanium (Ti) 0.15 to 0.8
Nickel (Ni) 0 to 0.5
Molybdenum (Mo) 0 to 0.5
Niobium (Nb) 0 to 0.5
Copper (Cu) 0 to 0.5
Phosphorus (P) 0 to 0.050
Sulfur (S) 0 to 0.050
Carbon (C) 0 to 0.030

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

Followup Questions

Similar Alloys

Further Reading

EN 10088-2: Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes

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

Welding Metallurgy of Stainless Steels, Erich Folkhard et al., 2012

Properties and Selection: Irons, Steels and High Performance Alloys, ASM Handbook vol. 1, ASM International, 1993

Corrosion of Stainless Steels, A. John Sedriks, 1996

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