Hot Rolled 1144 Carbon Steel
Hot rolled SAE-AISI 1144 is SAE-AISI 1144 steel in the hot worked condition. The graph bars on the material properties cards below compare hot rolled SAE-AISI 1144 to: wrought resulfurized 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
Brinell Hardness
220
Elastic (Young's, Tensile) Modulus
190 GPa 27 x 106 psi
Elongation at Break
17 %
Fatigue Strength
280 MPa 41 x 103 psi
Poisson's Ratio
0.29
Reduction in Area
40 %
Shear Modulus
72 GPa 10 x 106 psi
Shear Strength
460 MPa 67 x 103 psi
Tensile Strength: Ultimate (UTS)
750 MPa 110 x 103 psi
Tensile Strength: Yield (Proof)
420 MPa 61 x 103 psi
Thermal Properties
Latent Heat of Fusion
250 J/g
Maximum Temperature: Mechanical
400 °C 750 °F
Melting Completion (Liquidus)
1450 °C 2650 °F
Melting Onset (Solidus)
1410 °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
13 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
7.2 % 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 5.7 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
110 MJ/m3
Resilience: Unit (Modulus of Resilience)
480 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
22 points
Alloy Composition
| Fe | 97.5 to 98 | |
| Mn | 1.4 to 1.7 | |
| C | 0.4 to 0.48 | |
| S | 0.24 to 0.33 | |
| P | 0 to 0.040 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
ASTM A29: Standard Specification for Steel Bars, Carbon and Alloy, Hot-Wrought, General Requirements for
Microstructure of Steels and Cast Irons, Madeleine Durand-Charre, 2004
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
Steels: Processing, Structure, and Performance, 2nd ed., George Krauss, 2015