Quenched and Tempered (+QT1) 1.4107 Stainless Steel
EN 1.4107 +QT1 steel is EN 1.4107 stainless steel in the quenched and tempered condition. The graph bars on the material properties cards below compare EN 1.4107 +QT1 steel to: cast ferritic 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
21 %
Fatigue Strength
260 MPa 38 x 103 psi
Impact Strength: V-Notched Charpy
50 J 37 ft-lb
Poisson's Ratio
0.28
Shear Modulus
76 GPa 11 x 106 psi
Tensile Strength: Ultimate (UTS)
620 MPa 89 x 103 psi
Tensile Strength: Yield (Proof)
400 MPa 59 x 103 psi
Thermal Properties
Latent Heat of Fusion
270 J/g
Maximum Temperature: Corrosion
390 °C 730 °F
Maximum Temperature: Mechanical
740 °C 1360 °F
Melting Completion (Liquidus)
1450 °C 2640 °F
Melting Onset (Solidus)
1410 °C 2560 °F
Specific Heat Capacity
480 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
27 W/m-K 16 BTU/h-ft-°F
Thermal Expansion
10 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
2.9 % IACS
Electrical Conductivity: Equal Weight (Specific)
3.3 % IACS
Otherwise Unclassified Properties
Base Metal Price
7.5 % relative
Density
7.8 g/cm3 490 lb/ft3
Embodied Carbon
2.1 kg CO2/kg material
Embodied Energy
30 MJ/kg 13 x 103 BTU/lb
Embodied Water
100 L/kg 12 gal/lb
Common Calculations
PREN (Pitting Resistance)
13
Resilience: Ultimate (Unit Rupture Work)
110 MJ/m3
Resilience: Unit (Modulus of Resilience)
420 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
22 points
Strength to Weight: Bending
21 points
Thermal Diffusivity
7.2 mm2/s
Thermal Shock Resistance
22 points
Alloy Composition
| Fe | 83.8 to 87.2 | |
| Cr | 11.5 to 12.5 | |
| Ni | 0.8 to 1.5 | |
| Mn | 0.5 to 0.8 | |
| Mo | 0 to 0.5 | |
| Si | 0 to 0.4 | |
| Cu | 0 to 0.3 | |
| C | 0 to 0.1 | |
| V | 0 to 0.080 | |
| P | 0 to 0.030 | |
| S | 0 to 0.020 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
ISO 4991: Steel castings for pressure purposes
Advances in Stainless Steels, Baldev Raj et al. (editors), 2010