EN 1.4742 Stainless Steel vs. SAE-AISI 1144 Steel
Both EN 1.4742 stainless steel and SAE-AISI 1144 steel are iron alloys. They have 80% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is EN 1.4742 stainless 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 | 200 | |
190 |
Elongation at Break, % | 17 | |
11 to 17 |
Fatigue Strength, MPa | 180 | |
280 to 430 |
Poisson's Ratio | 0.28 | |
0.29 |
Shear Modulus, GPa | 77 | |
72 |
Shear Strength, MPa | 370 | |
460 to 510 |
Tensile Strength: Ultimate (UTS), MPa | 600 | |
750 to 840 |
Tensile Strength: Yield (Proof), MPa | 300 | |
420 to 690 |
Thermal Properties
Latent Heat of Fusion, J/g | 290 | |
250 |
Maximum Temperature: Mechanical, °C | 1000 | |
400 |
Melting Completion (Liquidus), °C | 1420 | |
1450 |
Melting Onset (Solidus), °C | 1380 | |
1410 |
Specific Heat Capacity, J/kg-K | 490 | |
470 |
Thermal Conductivity, W/m-K | 19 | |
51 |
Thermal Expansion, µm/m-K | 11 | |
13 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 1.9 | |
7.2 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 2.2 | |
8.2 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 9.0 | |
1.9 |
Density, g/cm3 | 7.6 | |
7.8 |
Embodied Carbon, kg CO2/kg material | 2.2 | |
1.4 |
Embodied Energy, MJ/kg | 32 | |
19 |
Embodied Water, L/kg | 130 | |
47 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 84 | |
91 to 110 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 230 | |
480 to 1290 |
Stiffness to Weight: Axial, points | 14 | |
13 |
Stiffness to Weight: Bending, points | 25 | |
24 |
Strength to Weight: Axial, points | 22 | |
27 to 30 |
Strength to Weight: Bending, points | 21 | |
23 to 25 |
Thermal Diffusivity, mm2/s | 5.1 | |
14 |
Thermal Shock Resistance, points | 21 | |
22 to 24 |
Alloy Composition
Aluminum (Al), % | 0.7 to 1.2 | |
0 |
Carbon (C), % | 0 to 0.12 | |
0.4 to 0.48 |
Chromium (Cr), % | 17 to 19 | |
0 |
Iron (Fe), % | 77.2 to 81.6 | |
97.5 to 98 |
Manganese (Mn), % | 0 to 1.0 | |
1.4 to 1.7 |
Phosphorus (P), % | 0 to 0.040 | |
0 to 0.040 |
Silicon (Si), % | 0.7 to 1.4 | |
0 |
Sulfur (S), % | 0 to 0.015 | |
0.24 to 0.33 |