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Spheroidized (+AC) 1.8522 Steel

EN 1.8522 +AC steel is EN 1.8522 steel in the spheroidized condition. The graph bars on the material properties cards below compare EN 1.8522 +AC 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

Brinell Hardness

220

Elastic (Young's, Tensile) Modulus

190 GPa 28 x 106 psi

Poisson's Ratio

0.29

Shear Modulus

74 GPa 11 x 106 psi

Tensile Strength: Ultimate (UTS)

730 MPa 110 x 103 psi

Thermal Properties

Latent Heat of Fusion

260 J/g

Maximum Temperature: Mechanical

470 °C 890 °F

Melting Completion (Liquidus)

1460 °C 2670 °F

Melting Onset (Solidus)

1420 °C 2590 °F

Specific Heat Capacity

470 J/kg-K 0.11 BTU/lb-°F

Thermal Conductivity

39 W/m-K 22 BTU/h-ft-°F

Thermal Expansion

13 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

7.8 % IACS

Electrical Conductivity: Equal Weight (Specific)

8.9 % IACS

Otherwise Unclassified Properties

Base Metal Price

4.2 % relative

Density

7.8 g/cm3 490 lb/ft3

Embodied Carbon

2.2 kg CO2/kg material

Embodied Energy

31 MJ/kg 13 x 103 BTU/lb

Embodied Water

63 L/kg 7.5 gal/lb

Common Calculations

PREN (Pitting Resistance)

6.2

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

24 points

Strength to Weight: Axial

26 points

Strength to Weight: Bending

23 points

Thermal Diffusivity

11 mm2/s

Thermal Shock Resistance

21 points

Alloy Composition

Iron (Fe)Fe 93.7 to 96
Chromium (Cr)Cr 2.8 to 3.3
Molybdenum (Mo)Mo 0.7 to 1.2
Manganese (Mn)Mn 0.4 to 0.7
Carbon (C)C 0.29 to 0.36
Silicon (Si)Si 0 to 0.4
Vanadium (V)V 0.15 to 0.25
Nickel (Ni)Ni 0 to 0.3
Copper (Cu)Cu 0 to 0.1
Sulfur (S)S 0 to 0.035
Phosphorus (P)P 0 to 0.025

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

Followup Questions

How are the material properties defined?How do I compare this exact variant to another material?

Further Reading

ISO 683-5: Heat treatable steels, alloy steels and free-cutting steels - Part 5: Nitriding steels

ISO 683-17: Heat-treated steels, alloy steels and free-cutting steels - Part 17: Ball and roller bearing steels

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