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Hardened (+H) 1.5510 Steel

EN 1.5510 +H steel is EN 1.5510 steel in the hardened (H) condition. It has the highest strength compared to the other variants of EN 1.5510 steel. The graph bars on the material properties cards below compare EN 1.5510 +H steel to: EN wrought alloy 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

Poisson's Ratio

0.29

Rockwell C Hardness

50

Shear Modulus

73 GPa 11 x 106 psi

Tensile Strength: Ultimate (UTS)

1600 MPa 230 x 103 psi

Thermal Properties

Latent Heat of Fusion

250 J/g

Maximum Temperature: Mechanical

400 °C 760 °F

Melting Completion (Liquidus)

1460 °C 2660 °F

Melting Onset (Solidus)

1420 °C 2590 °F

Specific Heat Capacity

470 J/kg-K 0.11 BTU/lb-°F

Thermal Conductivity

51 W/m-K 29 BTU/h-ft-°F

Thermal Expansion

13 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

7.1 % IACS

Electrical Conductivity: Equal Weight (Specific)

8.2 % 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 8.0 x 103 BTU/lb

Embodied Water

47 L/kg 5.6 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

46 to 260 MJ/m3

Resilience: Unit (Modulus of Resilience)

260 to 710 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

24 points

Strength to Weight: Axial

57 points

Strength to Weight: Bending

39 points

Thermal Diffusivity

14 mm2/s

Thermal Shock Resistance

47 points

Alloy Composition

Iron (Fe) 97.9 to 99.149
Manganese (Mn) 0.6 to 0.9
Carbon (C) 0.25 to 0.3
Silicon (Si) 0 to 0.3
Chromium (Cr) 0 to 0.3
Copper (Cu) 0 to 0.25
Phosphorus (P) 0 to 0.025
Sulfur (S) 0 to 0.025
Boron (B) 0.00080 to 0.0050

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

Followup Questions

Further Reading

Boron in Steel, S. K. Banerji and J. E. Morral (editors), 1980

EN 10263-4: Steel rod, bars and wire for cold heading and cold extrusion - Part 4: Technical delivery conditions for steels for quenching and tempering

Manufacture and Uses of Alloy Steels, Henry D. Hibbard, 2005

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

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