AISI 204 Stainless Steel vs. AISI 304 Stainless Steel
Both AISI 204 stainless steel and AISI 304 stainless steel are iron alloys. They have 90% of their average alloy composition in common. There are 33 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 204 stainless steel and the bottom bar is AISI 304 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 210 to 330 | |
| 170 to 360 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 23 to 39 | |
| 8.0 to 43 |
| Fatigue Strength, MPa | 320 to 720 | |
| 210 to 440 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 77 | |
| 77 |
| Shear Strength, MPa | 500 to 700 | |
| 400 to 690 |
| Tensile Strength: Ultimate (UTS), MPa | 730 to 1100 | |
| 580 to 1180 |
| Tensile Strength: Yield (Proof), MPa | 380 to 1080 | |
| 230 to 860 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 290 |
| Maximum Temperature: Corrosion, °C | 410 | |
| 420 |
| Maximum Temperature: Mechanical, °C | 850 | |
| 710 |
| Melting Completion (Liquidus), °C | 1410 | |
| 1450 |
| Melting Onset (Solidus), °C | 1370 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 15 | |
| 16 |
| Thermal Expansion, µm/m-K | 17 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.4 | |
| 2.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.9 | |
| 2.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 10 | |
| 15 |
| Density, g/cm3 | 7.7 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.4 | |
| 3.0 |
| Embodied Energy, MJ/kg | 35 | |
| 43 |
| Embodied Water, L/kg | 130 | |
| 150 |
Common Calculations
| PREN (Pitting Resistance) | 20 | |
| 20 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 240 to 250 | |
| 86 to 250 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 360 to 2940 | |
| 140 to 1870 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 27 to 40 | |
| 21 to 42 |
| Strength to Weight: Bending, points | 24 to 31 | |
| 20 to 32 |
| Thermal Diffusivity, mm2/s | 4.1 | |
| 4.2 |
| Thermal Shock Resistance, points | 16 to 24 | |
| 12 to 25 |
Alloy Composition
| Carbon (C), % | 0 to 0.030 | |
| 0 to 0.080 |
| Chromium (Cr), % | 15 to 17 | |
| 18 to 20 |
| Iron (Fe), % | 69.6 to 76.4 | |
| 66.5 to 74 |
| Manganese (Mn), % | 7.0 to 9.0 | |
| 0 to 2.0 |
| Nickel (Ni), % | 1.5 to 3.0 | |
| 8.0 to 10.5 |
| Nitrogen (N), % | 0.15 to 0.3 | |
| 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 0.030 | |
| 0 to 0.030 |