SAE-AISI 1044 Steel vs. SAE-AISI 1144 Steel
Both SAE-AISI 1044 steel and SAE-AISI 1144 steel are iron alloys. They have a very high 99% of their average alloy composition in common.
For each property being compared, the top bar is SAE-AISI 1044 steel and the bottom bar is SAE-AISI 1144 steel.
Metric UnitsUS Customary Units
Mechanical Properties
Brinell Hardness | 180 | |
220 to 230 |
Elastic (Young's, Tensile) Modulus, GPa | 190 | |
190 |
Elongation at Break, % | 18 | |
11 to 17 |
Fatigue Strength, MPa | 230 | |
280 to 430 |
Poisson's Ratio | 0.29 | |
0.29 |
Reduction in Area, % | 46 | |
34 to 40 |
Shear Modulus, GPa | 72 | |
72 |
Shear Strength, MPa | 380 | |
460 to 510 |
Tensile Strength: Ultimate (UTS), MPa | 620 | |
750 to 840 |
Tensile Strength: Yield (Proof), MPa | 340 | |
420 to 690 |
Thermal Properties
Latent Heat of Fusion, J/g | 250 | |
250 |
Maximum Temperature: Mechanical, °C | 400 | |
400 |
Melting Completion (Liquidus), °C | 1460 | |
1450 |
Melting Onset (Solidus), °C | 1420 | |
1410 |
Specific Heat Capacity, J/kg-K | 470 | |
470 |
Thermal Conductivity, W/m-K | 51 | |
51 |
Thermal Expansion, µm/m-K | 12 | |
13 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 7.0 | |
7.2 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 8.0 | |
8.2 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 1.8 | |
1.9 |
Density, g/cm3 | 7.8 | |
7.8 |
Embodied Carbon, kg CO2/kg material | 1.4 | |
1.4 |
Embodied Energy, MJ/kg | 18 | |
19 |
Embodied Water, L/kg | 45 | |
47 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 94 | |
91 to 110 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 320 | |
480 to 1290 |
Stiffness to Weight: Axial, points | 13 | |
13 |
Stiffness to Weight: Bending, points | 24 | |
24 |
Strength to Weight: Axial, points | 22 | |
27 to 30 |
Strength to Weight: Bending, points | 21 | |
23 to 25 |
Thermal Diffusivity, mm2/s | 14 | |
14 |
Thermal Shock Resistance, points | 20 | |
22 to 24 |
Alloy Composition
Carbon (C), % | 0.43 to 0.5 | |
0.4 to 0.48 |
Iron (Fe), % | 98.8 to 99.27 | |
97.5 to 98 |
Manganese (Mn), % | 0.3 to 0.6 | |
1.4 to 1.7 |
Phosphorus (P), % | 0 to 0.040 | |
0 to 0.040 |
Sulfur (S), % | 0 to 0.050 | |
0.24 to 0.33 |