EN 1.4903 Stainless Steel vs. EN 1.7725 Steel
Both EN 1.4903 stainless steel and EN 1.7725 steel are iron alloys. They have a moderately high 92% 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 1.4903 stainless steel and the bottom bar is EN 1.7725 steel.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 190 | |
190 |
Elongation at Break, % | 20 to 21 | |
14 |
Fatigue Strength, MPa | 320 to 330 | |
390 to 550 |
Impact Strength: V-Notched Charpy, J | 42 to 46 | |
34 to 35 |
Poisson's Ratio | 0.28 | |
0.29 |
Shear Modulus, GPa | 75 | |
73 |
Tensile Strength: Ultimate (UTS), MPa | 670 to 680 | |
830 to 1000 |
Tensile Strength: Yield (Proof), MPa | 500 | |
610 to 860 |
Thermal Properties
Latent Heat of Fusion, J/g | 270 | |
250 |
Maximum Temperature: Mechanical, °C | 650 | |
440 |
Melting Completion (Liquidus), °C | 1460 | |
1460 |
Melting Onset (Solidus), °C | 1420 | |
1420 |
Specific Heat Capacity, J/kg-K | 470 | |
470 |
Thermal Conductivity, W/m-K | 26 | |
39 |
Thermal Expansion, µm/m-K | 11 | |
13 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 3.4 | |
7.4 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 4.0 | |
8.6 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 7.0 | |
2.9 |
Density, g/cm3 | 7.8 | |
7.8 |
Embodied Carbon, kg CO2/kg material | 2.6 | |
1.8 |
Embodied Energy, MJ/kg | 36 | |
24 |
Embodied Water, L/kg | 88 | |
54 |
Common Calculations
PREN (Pitting Resistance) | 13 | |
2.8 |
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 to 130 | |
110 to 130 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 650 | |
980 to 1940 |
Stiffness to Weight: Axial, points | 14 | |
13 |
Stiffness to Weight: Bending, points | 25 | |
24 |
Strength to Weight: Axial, points | 24 | |
29 to 35 |
Strength to Weight: Bending, points | 22 | |
25 to 28 |
Thermal Diffusivity, mm2/s | 7.0 | |
11 |
Thermal Shock Resistance, points | 23 | |
24 to 29 |
Alloy Composition
Aluminum (Al), % | 0 to 0.040 | |
0 |
Carbon (C), % | 0.080 to 0.12 | |
0.27 to 0.34 |
Chromium (Cr), % | 8.0 to 9.5 | |
1.3 to 1.7 |
Copper (Cu), % | 0 to 0.3 | |
0 |
Iron (Fe), % | 87.1 to 90.5 | |
95.7 to 97.5 |
Manganese (Mn), % | 0.3 to 0.6 | |
0.6 to 1.0 |
Molybdenum (Mo), % | 0.85 to 1.1 | |
0.3 to 0.5 |
Nickel (Ni), % | 0 to 0.4 | |
0 |
Niobium (Nb), % | 0.060 to 0.1 | |
0 |
Nitrogen (N), % | 0.030 to 0.070 | |
0 |
Phosphorus (P), % | 0 to 0.025 | |
0 to 0.025 |
Silicon (Si), % | 0 to 0.5 | |
0 to 0.6 |
Sulfur (S), % | 0 to 0.015 | |
0 to 0.030 |
Vanadium (V), % | 0.18 to 0.25 | |
0.050 to 0.15 |