Quenched and Tempered (+QT1) 1.4525 Stainless Steel
EN 1.4525 +QT1 steel is EN 1.4525 stainless steel in the quenched and tempered condition. The graph bars on the material properties cards below compare EN 1.4525 +QT1 steel to: cast 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
190 GPa 28 x 106 psi
Elongation at Break
13 %
Fatigue Strength
480 MPa 69 x 103 psi
Impact Strength: V-Notched Charpy
23 J 17 ft-lb
Poisson's Ratio
0.28
Shear Modulus
76 GPa 11 x 106 psi
Tensile Strength: Ultimate (UTS)
1030 MPa 150 x 103 psi
Tensile Strength: Yield (Proof)
840 MPa 120 x 103 psi
Thermal Properties
Latent Heat of Fusion
280 J/g
Maximum Temperature: Corrosion
430 °C 810 °F
Maximum Temperature: Mechanical
860 °C 1580 °F
Melting Completion (Liquidus)
1430 °C 2600 °F
Melting Onset (Solidus)
1390 °C 2530 °F
Specific Heat Capacity
480 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
18 W/m-K 10 BTU/h-ft-°F
Thermal Expansion
11 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
2.2 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.6 % IACS
Otherwise Unclassified Properties
Base Metal Price
13 % relative
Density
7.8 g/cm3 490 lb/ft3
Embodied Carbon
2.8 kg CO2/kg material
Embodied Energy
39 MJ/kg 17 x 103 BTU/lb
Embodied Water
130 L/kg 16 gal/lb
Common Calculations
PREN (Pitting Resistance)
18
Resilience: Ultimate (Unit Rupture Work)
130 MJ/m3
Resilience: Unit (Modulus of Resilience)
1820 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
36 points
Strength to Weight: Bending
29 points
Thermal Diffusivity
4.7 mm2/s
Thermal Shock Resistance
34 points
Alloy Composition
| Fe | 70.4 to 79 | |
| Cr | 15 to 17 | |
| Ni | 3.5 to 5.5 | |
| Cu | 2.5 to 4.0 | |
| Mn | 0 to 1.0 | |
| Si | 0 to 0.8 | |
| Mo | 0 to 0.8 | |
| Nb | 0 to 0.35 | |
| C | 0 to 0.070 | |
| N | 0 to 0.050 | |
| P | 0 to 0.035 | |
| S | 0 to 0.025 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
EN 10283: Corrosion resistant steel castings
Corrosion of Stainless Steels, A. John Sedriks, 1996
Advances in Stainless Steels, Baldev Raj et al. (editors), 2010