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EN 1.4606 (X5NiCrTiMoVB25-15-2) Stainless Steel

EN 1.4606 stainless steel is a precipitation-hardening stainless steel formulated for primary forming into wrought products. 1.4606 is the EN numeric designation for this material. X5NiCrTiMoVB25-15-2 is the EN chemical designation.

It has a moderately high base cost among wrought precipitation-hardening stainless steels. In addition, it can have the lowest tensile strength and has a moderately high embodied energy.

The properties of EN 1.4606 stainless steel include two common variations. This page shows summary ranges across both of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare EN 1.4606 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

23 to 39 %

Fatigue Strength

240 to 420 MPa 35 to 61 x 103 psi

Poisson's Ratio

0.29

Shear Modulus

75 GPa 11 x 106 psi

Shear Strength

410 to 640 MPa 60 to 93 x 103 psi

Tensile Strength: Ultimate (UTS)

600 to 1020 MPa 87 to 150 x 103 psi

Tensile Strength: Yield (Proof)

280 to 630 MPa 41 to 91 x 103 psi

Thermal Properties

Latent Heat of Fusion

300 J/g

Maximum Temperature: Corrosion

770 °C 1430 °F

Maximum Temperature: Mechanical

910 °C 1680 °F

Melting Completion (Liquidus)

1430 °C 2600 °F

Melting Onset (Solidus)

1380 °C 2520 °F

Specific Heat Capacity

470 J/kg-K 0.11 BTU/lb-°F

Thermal Conductivity

14 W/m-K 8.1 BTU/h-ft-°F

Thermal Expansion

11 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

1.9 % IACS

Electrical Conductivity: Equal Weight (Specific)

2.2 % IACS

Otherwise Unclassified Properties

Base Metal Price

26 % relative

Density

7.9 g/cm3 500 lb/ft3

Embodied Carbon

6.0 kg CO2/kg material

Embodied Energy

87 MJ/kg 37 x 103 BTU/lb

Embodied Water

170 L/kg 20 gal/lb

Common Calculations

PREN (Pitting Resistance)

19

Resilience: Ultimate (Unit Rupture Work)

190 to 200 MJ/m3

Resilience: Unit (Modulus of Resilience)

200 to 1010 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

24 points

Strength to Weight: Axial

21 to 36 points

Strength to Weight: Bending

20 to 28 points

Thermal Diffusivity

3.7 mm2/s

Thermal Shock Resistance

21 to 35 points

Alloy Composition

Among wrought stainless steels, the composition of EN 1.4606 stainless steel is notable for including boron (B) and vanadium (V). Boron is used to improve hardenability. It has a substantial effect when added in even tiny amounts. It can also facilitate sintering. Vanadium has a strong hardening effect, but this effect is particularly sensitive to the type of tempering.

Iron (Fe) 49.2 to 59
Nickel (Ni) 24 to 27
Chromium (Cr) 13 to 16
Titanium (Ti) 1.9 to 2.3
Manganese (Mn) 1.0 to 2.0
Molybdenum (Mo) 1.0 to 1.5
Silicon (Si) 0 to 1.0
Vanadium (V) 0.1 to 0.5
Aluminum (Al) 0 to 0.35
Carbon (C) 0 to 0.080
Phosphorus (P) 0 to 0.025
Sulfur (S) 0 to 0.015
Boron (B) 0.0010 to 0.010

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

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