EN 1.4640 Stainless Steel vs. EN 1.4378 Stainless Steel
Both EN 1.4640 stainless steel and EN 1.4378 stainless steel are iron alloys. They have 89% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is EN 1.4640 stainless steel and the bottom bar is EN 1.4378 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
Brinell Hardness | 190 to 200 | |
190 to 340 |
Elastic (Young's, Tensile) Modulus, GPa | 200 | |
200 |
Elongation at Break, % | 51 | |
14 to 34 |
Fatigue Strength, MPa | 230 to 250 | |
340 to 550 |
Poisson's Ratio | 0.28 | |
0.28 |
Shear Modulus, GPa | 77 | |
77 |
Shear Strength, MPa | 440 to 460 | |
510 to 680 |
Tensile Strength: Ultimate (UTS), MPa | 620 to 650 | |
760 to 1130 |
Tensile Strength: Yield (Proof), MPa | 240 to 260 | |
430 to 970 |
Thermal Properties
Latent Heat of Fusion, J/g | 280 | |
290 |
Maximum Temperature: Corrosion, °C | 420 | |
410 |
Maximum Temperature: Mechanical, °C | 930 | |
910 |
Melting Completion (Liquidus), °C | 1420 | |
1390 |
Melting Onset (Solidus), °C | 1380 | |
1350 |
Specific Heat Capacity, J/kg-K | 480 | |
480 |
Thermal Expansion, µm/m-K | 16 | |
17 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 14 | |
12 |
Density, g/cm3 | 7.8 | |
7.6 |
Embodied Carbon, kg CO2/kg material | 2.8 | |
2.7 |
Embodied Energy, MJ/kg | 40 | |
39 |
Embodied Water, L/kg | 150 | |
150 |
Common Calculations
PREN (Pitting Resistance) | 20 | |
23 |
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 250 to 260 | |
150 to 220 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 150 to 170 | |
470 to 2370 |
Stiffness to Weight: Axial, points | 14 | |
14 |
Stiffness to Weight: Bending, points | 25 | |
25 |
Strength to Weight: Axial, points | 22 to 23 | |
28 to 41 |
Strength to Weight: Bending, points | 21 | |
24 to 31 |
Thermal Shock Resistance, points | 14 to 15 | |
16 to 23 |
Alloy Composition
Carbon (C), % | 0.030 to 0.080 | |
0 to 0.080 |
Chromium (Cr), % | 18 to 19 | |
17 to 19 |
Copper (Cu), % | 1.3 to 2.0 | |
0 |
Iron (Fe), % | 67.4 to 73.6 | |
61.2 to 69 |
Manganese (Mn), % | 1.5 to 4.0 | |
11.5 to 14.5 |
Nickel (Ni), % | 5.5 to 6.9 | |
2.3 to 3.7 |
Nitrogen (N), % | 0.030 to 0.11 | |
0.2 to 0.4 |
Phosphorus (P), % | 0 to 0.045 | |
0 to 0.060 |
Silicon (Si), % | 0 to 0.5 | |
0 to 1.0 |
Sulfur (S), % | 0 to 0.015 | |
0 to 0.030 |