SAE-AISI 81B45 Steel vs. EN 1.4378 Stainless Steel
Both SAE-AISI 81B45 steel and EN 1.4378 stainless steel are iron alloys. They have 67% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 81B45 steel and the bottom bar is EN 1.4378 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
Brinell Hardness | 160 to 200 | |
190 to 340 |
Elastic (Young's, Tensile) Modulus, GPa | 190 | |
200 |
Elongation at Break, % | 12 to 24 | |
14 to 34 |
Fatigue Strength, MPa | 250 to 350 | |
340 to 550 |
Poisson's Ratio | 0.29 | |
0.28 |
Shear Modulus, GPa | 73 | |
77 |
Shear Strength, MPa | 340 to 400 | |
510 to 680 |
Tensile Strength: Ultimate (UTS), MPa | 540 to 670 | |
760 to 1130 |
Tensile Strength: Yield (Proof), MPa | 350 to 560 | |
430 to 970 |
Thermal Properties
Latent Heat of Fusion, J/g | 250 | |
290 |
Maximum Temperature: Mechanical, °C | 410 | |
910 |
Melting Completion (Liquidus), °C | 1460 | |
1390 |
Melting Onset (Solidus), °C | 1420 | |
1350 |
Specific Heat Capacity, J/kg-K | 470 | |
480 |
Thermal Expansion, µm/m-K | 12 | |
17 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 2.3 | |
12 |
Density, g/cm3 | 7.8 | |
7.6 |
Embodied Carbon, kg CO2/kg material | 1.5 | |
2.7 |
Embodied Energy, MJ/kg | 20 | |
39 |
Embodied Water, L/kg | 49 | |
150 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 77 to 110 | |
150 to 220 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 320 to 840 | |
470 to 2370 |
Stiffness to Weight: Axial, points | 13 | |
14 |
Stiffness to Weight: Bending, points | 24 | |
25 |
Strength to Weight: Axial, points | 19 to 24 | |
28 to 41 |
Strength to Weight: Bending, points | 19 to 22 | |
24 to 31 |
Thermal Shock Resistance, points | 17 to 21 | |
16 to 23 |
Alloy Composition
Boron (B), % | 0.00050 to 0.0030 | |
0 |
Carbon (C), % | 0.43 to 0.48 | |
0 to 0.080 |
Chromium (Cr), % | 0.35 to 0.55 | |
17 to 19 |
Iron (Fe), % | 97 to 98 | |
61.2 to 69 |
Manganese (Mn), % | 0.75 to 1.0 | |
11.5 to 14.5 |
Molybdenum (Mo), % | 0.080 to 0.15 | |
0 |
Nickel (Ni), % | 0.2 to 0.4 | |
2.3 to 3.7 |
Nitrogen (N), % | 0 | |
0.2 to 0.4 |
Phosphorus (P), % | 0 to 0.035 | |
0 to 0.060 |
Silicon (Si), % | 0.15 to 0.35 | |
0 to 1.0 |
Sulfur (S), % | 0 to 0.040 | |
0 to 0.030 |