S21904 Stainless Steel vs. ASTM B628 Ag-Cu
S21904 stainless steel belongs to the iron alloys classification, while ASTM B628 Ag-Cu belongs to the otherwise unclassified metals. There are 19 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.
For each property being compared, the top bar is S21904 stainless steel and the bottom bar is ASTM B628 Ag-Cu.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 83 |
| Elongation at Break, % | 17 to 51 | |
| 1.1 to 17 |
| Poisson's Ratio | 0.28 | |
| 0.36 |
| Shear Modulus, GPa | 78 | |
| 31 |
| Shear Strength, MPa | 510 to 620 | |
| 210 to 430 |
| Tensile Strength: Ultimate (UTS), MPa | 700 to 1000 | |
| 350 to 760 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 140 |
| Melting Completion (Liquidus), °C | 1400 | |
| 780 |
| Melting Onset (Solidus), °C | 1350 | |
| 780 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 280 |
| Thermal Expansion, µm/m-K | 17 | |
| 19 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.5 | |
| 84 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.9 | |
| 75 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.7 | |
| 10 |
Common Calculations
| Stiffness to Weight: Axial, points | 14 | |
| 4.6 |
| Stiffness to Weight: Bending, points | 25 | |
| 14 |
| Strength to Weight: Axial, points | 25 to 36 | |
| 9.5 to 21 |
| Strength to Weight: Bending, points | 23 to 29 | |
| 11 to 18 |
| Thermal Shock Resistance, points | 15 to 21 | |
| 16 to 34 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0 to 0.0050 |
| Cadmium (Cd), % | 0 | |
| 0 to 0.050 |
| Carbon (C), % | 0 to 0.040 | |
| 0 |
| Chromium (Cr), % | 19 to 21.5 | |
| 0 |
| Copper (Cu), % | 0 | |
| 26.6 to 29 |
| Iron (Fe), % | 59.5 to 67.4 | |
| 0 to 0.050 |
| Lead (Pb), % | 0 | |
| 0 to 0.030 |
| Manganese (Mn), % | 8.0 to 10 | |
| 0 |
| Nickel (Ni), % | 5.5 to 7.5 | |
| 0 to 0.010 |
| Nitrogen (N), % | 0.15 to 0.4 | |
| 0 |
| Phosphorus (P), % | 0 to 0.045 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 |
| Silver (Ag), % | 0 | |
| 71 to 73 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 0 to 0.060 |
| Residuals, % | 0 | |
| 0 to 0.21 |