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.
| Fe | 49.2 to 59 | |
| Ni | 24 to 27 | |
| Cr | 13 to 16 | |
| Ti | 1.9 to 2.3 | |
| Mn | 1.0 to 2.0 | |
| Mo | 1.0 to 1.5 | |
| Si | 0 to 1.0 | |
| V | 0.1 to 0.5 | |
| Al | 0 to 0.35 | |
| C | 0 to 0.080 | |
| P | 0 to 0.025 | |
| S | 0 to 0.015 | |
| 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