AISI 440A Stainless Steel vs. AISI 302 Stainless Steel
Both AISI 440A stainless steel and AISI 302 stainless steel are iron alloys. They have 89% 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 AISI 440A stainless steel and the bottom bar is AISI 302 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 200 | |
200 |
Elongation at Break, % | 5.0 to 20 | |
4.5 to 46 |
Fatigue Strength, MPa | 270 to 790 | |
210 to 520 |
Poisson's Ratio | 0.28 | |
0.28 |
Shear Modulus, GPa | 77 | |
77 |
Shear Strength, MPa | 450 to 1040 | |
400 to 830 |
Tensile Strength: Ultimate (UTS), MPa | 730 to 1790 | |
580 to 1430 |
Tensile Strength: Yield (Proof), MPa | 420 to 1650 | |
230 to 1100 |
Thermal Properties
Latent Heat of Fusion, J/g | 280 | |
280 |
Maximum Temperature: Corrosion, °C | 400 | |
410 |
Maximum Temperature: Mechanical, °C | 760 | |
710 |
Melting Completion (Liquidus), °C | 1480 | |
1420 |
Melting Onset (Solidus), °C | 1370 | |
1400 |
Specific Heat Capacity, J/kg-K | 480 | |
480 |
Thermal Conductivity, W/m-K | 23 | |
16 |
Thermal Expansion, µm/m-K | 10 | |
17 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 2.5 | |
2.4 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 2.9 | |
2.8 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 9.0 | |
15 |
Density, g/cm3 | 7.7 | |
7.8 |
Embodied Carbon, kg CO2/kg material | 2.2 | |
3.0 |
Embodied Energy, MJ/kg | 31 | |
42 |
Embodied Water, L/kg | 120 | |
140 |
Common Calculations
PREN (Pitting Resistance) | 18 | |
19 |
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 87 to 120 | |
59 to 260 |
Stiffness to Weight: Axial, points | 14 | |
14 |
Stiffness to Weight: Bending, points | 25 | |
25 |
Strength to Weight: Axial, points | 26 to 65 | |
21 to 51 |
Strength to Weight: Bending, points | 23 to 43 | |
20 to 36 |
Thermal Diffusivity, mm2/s | 6.2 | |
4.4 |
Thermal Shock Resistance, points | 26 to 65 | |
12 to 31 |
Alloy Composition
Carbon (C), % | 0.6 to 0.75 | |
0 to 0.15 |
Chromium (Cr), % | 16 to 18 | |
17 to 19 |
Iron (Fe), % | 78.4 to 83.4 | |
67.9 to 75 |
Manganese (Mn), % | 0 to 1.0 | |
0 to 2.0 |
Molybdenum (Mo), % | 0 to 0.75 | |
0 |
Nickel (Ni), % | 0 | |
8.0 to 10 |
Nitrogen (N), % | 0 | |
0 to 0.1 |
Phosphorus (P), % | 0 to 0.040 | |
0 to 0.045 |
Silicon (Si), % | 0 to 1.0 | |
0 to 0.75 |
Sulfur (S), % | 0 to 0.015 | |
0 to 0.030 |