AISI 439 Stainless Steel vs. AISI 434 Stainless Steel
Both AISI 439 stainless steel and AISI 434 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a very high 98% of their average alloy composition in common. There are 35 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.
For each property being compared, the top bar is AISI 439 stainless steel and the bottom bar is AISI 434 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
Brinell Hardness | 160 | |
170 |
Elastic (Young's, Tensile) Modulus, GPa | 200 | |
200 |
Elongation at Break, % | 23 | |
24 |
Fatigue Strength, MPa | 170 | |
220 |
Poisson's Ratio | 0.28 | |
0.28 |
Rockwell B Hardness | 78 | |
77 |
Shear Modulus, GPa | 77 | |
78 |
Shear Strength, MPa | 310 | |
330 |
Tensile Strength: Ultimate (UTS), MPa | 490 | |
520 |
Tensile Strength: Yield (Proof), MPa | 250 | |
320 |
Thermal Properties
Latent Heat of Fusion, J/g | 280 | |
280 |
Maximum Temperature: Corrosion, °C | 530 | |
410 |
Maximum Temperature: Mechanical, °C | 890 | |
880 |
Melting Completion (Liquidus), °C | 1510 | |
1510 |
Melting Onset (Solidus), °C | 1430 | |
1430 |
Specific Heat Capacity, J/kg-K | 480 | |
480 |
Thermal Conductivity, W/m-K | 25 | |
25 |
Thermal Expansion, µm/m-K | 11 | |
10 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 2.9 | |
2.5 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 3.4 | |
2.9 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 9.0 | |
9.5 |
Calomel Potential, mV | -220 | |
-230 |
Density, g/cm3 | 7.7 | |
7.7 |
Embodied Carbon, kg CO2/kg material | 2.3 | |
2.4 |
Embodied Energy, MJ/kg | 34 | |
33 |
Embodied Water, L/kg | 120 | |
120 |
Common Calculations
PREN (Pitting Resistance) | 18 | |
20 |
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 95 | |
110 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 160 | |
260 |
Stiffness to Weight: Axial, points | 14 | |
14 |
Stiffness to Weight: Bending, points | 25 | |
25 |
Strength to Weight: Axial, points | 18 | |
19 |
Strength to Weight: Bending, points | 18 | |
18 |
Thermal Diffusivity, mm2/s | 6.7 | |
6.7 |
Thermal Shock Resistance, points | 16 | |
19 |
Alloy Composition
Aluminum (Al), % | 0 to 0.15 | |
0 |
Carbon (C), % | 0 to 0.030 | |
0 to 0.12 |
Chromium (Cr), % | 17 to 19 | |
16 to 18 |
Iron (Fe), % | 77.1 to 82.8 | |
78.6 to 83.3 |
Manganese (Mn), % | 0 to 1.0 | |
0 to 1.0 |
Molybdenum (Mo), % | 0 | |
0.75 to 1.3 |
Nickel (Ni), % | 0 to 0.5 | |
0 |
Nitrogen (N), % | 0 to 0.030 | |
0 |
Phosphorus (P), % | 0 to 0.040 | |
0 to 0.040 |
Silicon (Si), % | 0 to 1.0 | |
0 to 1.0 |
Sulfur (S), % | 0 to 0.030 | |
0 to 0.030 |
Titanium (Ti), % | 0.2 to 1.1 | |
0 |