AISI 420 Stainless Steel vs. ASTM A209 Steel
Both AISI 420 stainless steel and ASTM A209 steel are iron alloys. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is AISI 420 stainless steel and the bottom bar is ASTM A209 steel.
Metric UnitsUS Customary Units
Mechanical Properties
Brinell Hardness | 190 | |
140 to 150 |
Elastic (Young's, Tensile) Modulus, GPa | 190 | |
190 |
Elongation at Break, % | 8.0 to 15 | |
34 |
Fatigue Strength, MPa | 220 to 670 | |
180 to 200 |
Poisson's Ratio | 0.28 | |
0.29 |
Rockwell B Hardness | 84 | |
77 to 81 |
Shear Modulus, GPa | 76 | |
73 |
Shear Strength, MPa | 420 to 1010 | |
280 to 310 |
Tensile Strength: Ultimate (UTS), MPa | 690 to 1720 | |
420 to 460 |
Tensile Strength: Yield (Proof), MPa | 380 to 1310 | |
220 to 250 |
Thermal Properties
Latent Heat of Fusion, J/g | 280 | |
250 |
Maximum Temperature: Mechanical, °C | 620 | |
410 |
Melting Completion (Liquidus), °C | 1510 | |
1470 |
Melting Onset (Solidus), °C | 1450 | |
1420 to 1430 |
Specific Heat Capacity, J/kg-K | 480 | |
470 |
Thermal Conductivity, W/m-K | 27 | |
50 |
Thermal Expansion, µm/m-K | 10 | |
13 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 3.0 | |
7.1 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 3.5 | |
8.1 to 8.2 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 7.5 | |
2.4 |
Density, g/cm3 | 7.7 | |
7.9 |
Embodied Carbon, kg CO2/kg material | 2.0 | |
1.5 |
Embodied Energy, MJ/kg | 28 | |
20 |
Embodied Water, L/kg | 100 | |
47 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 88 to 130 | |
120 to 130 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 380 to 4410 | |
130 to 170 |
Stiffness to Weight: Axial, points | 14 | |
13 |
Stiffness to Weight: Bending, points | 25 | |
24 |
Strength to Weight: Axial, points | 25 to 62 | |
15 to 16 |
Strength to Weight: Bending, points | 22 to 41 | |
16 to 17 |
Thermal Diffusivity, mm2/s | 7.3 | |
13 |
Thermal Shock Resistance, points | 25 to 62 | |
12 to 14 |