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EN 1.4612 (X1CrNiMoAlTi12-11-2) Stainless Steel

EN 1.4612 stainless steel is a precipitation-hardening stainless steel formulated for primary forming into wrought products. 1.4612 is the EN numeric designation for this material. X1CrNiMoAlTi12-11-2 is the EN chemical designation.

It can have a fairly high tensile strength among the wrought precipitation-hardening stainless steels in the database.

The properties of EN 1.4612 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 1.4612 stainless steel to: wrought precipitation-hardening 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

11 %

Fatigue Strength

860 to 950 MPa 120 to 140 x 103 psi

Impact Strength: V-Notched Charpy

11 to 22 J 8.3 to 17 ft-lb

Poisson's Ratio


Shear Modulus

76 GPa 11 x 106 psi

Shear Strength

1010 to 1110 MPa 150 to 160 x 103 psi

Tensile Strength: Ultimate (UTS)

1690 to 1850 MPa 250 to 270 x 103 psi

Tensile Strength: Yield (Proof)

1570 to 1730 MPa 230 to 250 x 103 psi

Thermal Properties

Latent Heat of Fusion

280 J/g

Maximum Temperature: Corrosion

450 °C 840 °F

Maximum Temperature: Mechanical

790 °C 1450 °F

Melting Completion (Liquidus)

1450 °C 2640 °F

Melting Onset (Solidus)

1400 °C 2560 °F

Specific Heat Capacity

480 J/kg-K 0.11 BTU/lb-°F

Thermal Expansion

11 µm/m-K

Otherwise Unclassified Properties

Base Metal Price

16 % relative


7.9 g/cm3 490 lb/ft3

Embodied Carbon

3.6 kg CO2/kg material

Embodied Energy

50 MJ/kg 21 x 103 BTU/lb

Embodied Water

140 L/kg 17 gal/lb

Common Calculations

PREN (Pitting Resistance)


Resilience: Ultimate (Unit Rupture Work)

190 to 210 MJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

60 to 65 points

Strength to Weight: Bending

40 to 43 points

Thermal Shock Resistance

58 to 63 points

Alloy Composition

Among wrought stainless steels, the composition of EN 1.4612 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)Fe 71.5 to 75.5
Chromium (Cr)Cr 11 to 12.5
Nickel (Ni)Ni 10.2 to 11.3
Molybdenum (Mo)Mo 1.8 to 2.3
Aluminum (Al)Al 1.4 to 1.8
Titanium (Ti)Ti 0.2 to 0.5
Manganese (Mn)Mn 0 to 0.1
Silicon (Si)Si 0 to 0.1
Carbon (C)C 0 to 0.015
Phosphorus (P)P 0 to 0.010
Nitrogen (N)N 0 to 0.010
Sulfur (S)S 0 to 0.0050

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

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

Corrosion of Stainless Steels, A. John Sedriks, 1996

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