Spheroidized and Cold Drawn (+AC+C) 1.3520 Steel
EN 1.3520 +AC+C steel is EN 1.3520 steel in the spheroidized and cold-drawn condition. The graph bars on the material properties cards below compare EN 1.3520 +AC+C 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 27 x 106 psi
Elongation at Break
11 %
Fatigue Strength
350 MPa 51 x 103 psi
Poisson's Ratio
0.29
Shear Modulus
72 GPa 10 x 106 psi
Shear Strength
440 MPa 64 x 103 psi
Tensile Strength: Ultimate (UTS)
730 MPa 110 x 103 psi
Tensile Strength: Yield (Proof)
570 MPa 82 x 103 psi
Thermal Properties
Latent Heat of Fusion
260 J/g
Maximum Temperature: Mechanical
430 °C 810 °F
Melting Completion (Liquidus)
1440 °C 2630 °F
Melting Onset (Solidus)
1400 °C 2550 °F
Specific Heat Capacity
480 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
43 W/m-K 25 BTU/h-ft-°F
Thermal Expansion
13 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
7.4 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.6 % IACS
Otherwise Unclassified Properties
Base Metal Price
2.6 % relative
Density
7.8 g/cm3 480 lb/ft3
Embodied Carbon
1.5 kg CO2/kg material
Embodied Energy
20 MJ/kg 8.8 x 103 BTU/lb
Embodied Water
54 L/kg 6.4 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
77 MJ/m3
Resilience: Unit (Modulus of Resilience)
860 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
26 points
Strength to Weight: Bending
23 points
Thermal Diffusivity
12 mm2/s
Thermal Shock Resistance
22 points
Alloy Composition
| Fe | 95.9 to 97.2 | |
| Cr | 1.4 to 1.7 | |
| Mn | 1.0 to 1.2 | |
| C | 0.93 to 1.1 | |
| Si | 0.45 to 0.75 | |
| Cu | 0 to 0.3 | |
| Mo | 0 to 0.1 | |
| Al | 0 to 0.050 | |
| S | 0 to 0.030 | |
| P | 0 to 0.025 | |
| O | 0 to 0.0015 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
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