MakeItFrom.com
Menu (ESC)

Quenched and Tempered (+QT1) 1.1118 Cast Steel

EN 1.1118 +QT1 steel is EN 1.1118 cast steel in the quenched and tempered condition. It has the highest strength and lowest ductility compared to the other variants of EN 1.1118 cast steel. The graph bars on the material properties cards below compare EN 1.1118 +QT1 steel to: cast carbon 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 27 x 106 psi

Elongation at Break

14 %

Fatigue Strength

400 MPa 58 x 103 psi

Poisson's Ratio

0.29

Shear Modulus

73 GPa 11 x 106 psi

Tensile Strength: Ultimate (UTS)

750 MPa 110 x 103 psi

Tensile Strength: Yield (Proof)

630 MPa 91 x 103 psi

Thermal Properties

Latent Heat of Fusion

250 J/g

Maximum Temperature: Mechanical

400 °C 750 °F

Melting Completion (Liquidus)

1460 °C 2650 °F

Melting Onset (Solidus)

1420 °C 2580 °F

Specific Heat Capacity

470 J/kg-K 0.11 BTU/lb-°F

Thermal Conductivity

51 W/m-K 30 BTU/h-ft-°F

Thermal Expansion

12 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

7.2 % IACS

Electrical Conductivity: Equal Weight (Specific)

8.3 % IACS

Otherwise Unclassified Properties

Base Metal Price

1.9 % relative

Density

7.8 g/cm3 490 lb/ft3

Embodied Carbon

1.4 kg CO2/kg material

Embodied Energy

19 MJ/kg 8.1 x 103 BTU/lb

Embodied Water

48 L/kg 5.7 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

97 MJ/m3

Resilience: Unit (Modulus of Resilience)

1050 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

24 points

Strength to Weight: Axial

27 points

Strength to Weight: Bending

23 points

Thermal Diffusivity

14 mm2/s

Thermal Shock Resistance

24 points

Alloy Composition

Iron (Fe)Fe 97.3 to 98.3
Manganese (Mn)Mn 1.5 to 1.8
Silicon (Si)Si 0 to 0.6
Carbon (C)C 0.2 to 0.25
Phosphorus (P)P 0 to 0.020
Sulfur (S)S 0 to 0.015

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Further Reading

EN 10293: Steel castings - Steel castings for general engineering uses

Carbon Steel Handbook, D. Gandy, 2007

ASM Specialty Handbook: Carbon and Alloy Steels, J. R. Davis (editor), 1996

Ferrous Materials: Steel and Cast Iron, Hans Berns and Werner Theisen, 2008

CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015

Steels: Processing, Structure, and Performance, 2nd ed., George Krauss, 2015