EN 1.4424 (X2CrNiMoSi18-5-3) Stainless Steel

Duplex Stainless Steels

Material conditionhot worked

Overview Chemical Composition Mechanical Properties Physical Properties Other Properties

Property Overview

Density7.7g/cm³

Elastic Modulus200GPa

Tensile Strength800MPa

Yield Strength480MPa

Brinell Hardness230HB

Maximum Service Temperature960°C

Weight Calculator

Chemical Composition

0 to 0.030%

18 to 19%

4.5 to 5.2%

2.5 to 3.0%

1.2 to 2.0%

1.4 to 2.0%

0.050 to 0.1%

0 to 0.035%

0 to 0.015%

68.6 to 72.4%

Mechanical

Elastic (Young's, Tensile) Modulus

200 GPa

Elongation at Break

28 %

Fatigue Strength

350 MPa

Impact Strength: V-Notched Charpy

90 J

Poisson's Ratio

0.28

Shear Modulus

78 GPa

Shear Strength

520 MPa

Tensile Strength: Ultimate (UTS)

800 MPa

Tensile Strength: Yield (Proof)

480 MPa

Hardness

Brinell Hardness

230

Physical

Density

7.7 g/cm 3

Thermal

Latent Heat of Fusion

310 J/g

Maximum Temperature: Corrosion

420 °C

Maximum Temperature: Mechanical

960 °C

Melting Completion (Liquidus)

1430 °C

Melting Onset (Solidus)

1390 °C

Specific Heat Capacity

480 J/kg-K

Thermal Conductivity

13 W/m-K

Thermal Diffusivity

3.5 mm 2 /s

Thermal Expansion

12 µm/m-K

Thermal Shock Resistance

23 points

Electrical

Electrical Conductivity: Equal Volume

2.2 % IACS

Electrical Conductivity: Equal Weight (Specific)

2.5 % IACS

Calculated

PREN (Pitting Resistance)

Resilience: Ultimate (Unit Rupture Work)

190 MJ/m 3

Resilience: Unit (Modulus of Resilience)

580 kJ/m 3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

29 points

Strength to Weight: Bending

25 points

Environmental

Base Metal Price

15 % relative

Embodied Carbon

3.4 kg CO 2 /kg material

Embodied Energy

46 MJ/kg

Embodied Energy

46 MJ/kg 20 x 10 3 BTU/lb

Embodied Water

140 L/kg

Embodied Water

140 L/kg 17 gal/lb

Registered Designations & Aliases

1.44241.4424EN 1.4424 (X2CrNiMoSi18-5-3) Stainless SteelX2CrNiMoSi18-5-3X2CrNiMoSi18-5-3

Standards

EN 10088-1 EN 10088-1: 2005 Stainless steels. List of stainless steels

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

EN 10088-2 EN 10088-2: 2005 Stainless steels. Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes

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

EN 10088-3 EN 10088-3: 2005 Stainless steels. Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes

EN 10088-3 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 10088-4 EN 10088-4: 2009 Stainless steels. Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for construction purposes

EN 10088-5 EN 10088-5: 2009 Stainless steels. Technical delivery conditions for bars, rods, wire, sections and bright products of corrosion resisting steels for construction purposes

EN 10216-5 EN 10216-5: 2014 Seamless steel tubes for pressure purposes. Technical delivery conditions. Stainless steel tubes

EN 10297-2 EN 10297-2: 2005 Seamless circular steel tubes for mechanical and general engineering purposes. Stainless steel. Technical delivery conditions