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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

Iron (Fe)Fe 83.8 to 87.2
Chromium (Cr)Cr 11.5 to 12.5
Nickel (Ni)Ni 0.8 to 1.5
Manganese (Mn)Mn 0.5 to 0.8
Molybdenum (Mo)Mo 0 to 0.5
Silicon (Si)Si 0 to 0.4
Copper (Cu)Cu 0 to 0.3
Carbon (C)C 0 to 0.1
Vanadium (V)V 0 to 0.080
Phosphorus (P)P 0 to 0.030
Sulfur (S)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