Quenched and Tempered (+QT) 1.4419 Stainless Steel
EN 1.4419 +QT steel is EN 1.4419 stainless steel in the quenched and tempered condition. The graph bars on the material properties cards below compare EN 1.4419 +QT steel to: wrought martensitic 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
200 GPa 28 x 106 psi
Elongation at Break
11 %
Fatigue Strength
680 MPa 98 x 103 psi
Poisson's Ratio
0.28
Rockwell C Hardness
49
Shear Modulus
76 GPa 11 x 106 psi
Shear Strength
950 MPa 140 x 103 psi
Tensile Strength: Ultimate (UTS)
1590 MPa 230 x 103 psi
Tensile Strength: Yield (Proof)
1240 MPa 180 x 103 psi
Thermal Properties
Latent Heat of Fusion
280 J/g
Maximum Temperature: Corrosion
390 °C 730 °F
Maximum Temperature: Mechanical
790 °C 1450 °F
Melting Completion (Liquidus)
1440 °C 2630 °F
Melting Onset (Solidus)
1400 °C 2550 °F
Specific Heat Capacity
480 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
30 W/m-K 17 BTU/h-ft-°F
Thermal Expansion
11 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
2.8 % IACS
Electrical Conductivity: Equal Weight (Specific)
3.2 % IACS
Otherwise Unclassified Properties
Base Metal Price
8.0 % relative
Density
7.7 g/cm3 480 lb/ft3
Embodied Carbon
2.2 kg CO2/kg material
Embodied Energy
30 MJ/kg 13 x 103 BTU/lb
Embodied Water
110 L/kg 13 gal/lb
Common Calculations
PREN (Pitting Resistance)
16
Resilience: Ultimate (Unit Rupture Work)
170 MJ/m3
Resilience: Unit (Modulus of Resilience)
3920 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
57 points
Strength to Weight: Bending
39 points
Thermal Diffusivity
8.1 mm2/s
Thermal Shock Resistance
55 points
Alloy Composition
| Fe | 82 to 86 | |
| Cr | 13 to 14.5 | |
| Mo | 0.6 to 1.0 | |
| Mn | 0 to 1.0 | |
| Si | 0 to 1.0 | |
| C | 0.36 to 0.42 | |
| P | 0 to 0.040 | |
| S | 0 to 0.015 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
EN 10088-2: Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes
Welding Metallurgy and Weldability of Stainless Steels, John C. Lippold and Damian J. Kotecki, 2005
EN 10088-1: Stainless steels - Part 1: List of stainless steels
Corrosion of Stainless Steels, A. John Sedriks, 1996
Advances in Stainless Steels, Baldev Raj et al. (editors), 2010
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015