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ASTM B540 Palladium vs. S21904 Stainless Steel

ASTM B540 palladium belongs to the otherwise unclassified metals classification, while S21904 stainless steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is ASTM B540 palladium and the bottom bar is S21904 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 1.1 to 14
17 to 51
Fatigue Strength, MPa 350
380 to 550
Poisson's Ratio 0.38
0.28
Shear Modulus, GPa 39
78
Shear Strength, MPa 500 to 700
510 to 620
Tensile Strength: Ultimate (UTS), MPa 830 to 1240
700 to 1000
Tensile Strength: Yield (Proof), MPa 620 to 1000
390 to 910

Thermal Properties

Latent Heat of Fusion, J/g 140
290
Melting Completion (Liquidus), °C 1220
1400
Melting Onset (Solidus), °C 1020
1350
Specific Heat Capacity, J/kg-K 240
480
Thermal Expansion, µm/m-K 14
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.9 to 5.5
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5 to 3.9
2.9

Otherwise Unclassified Properties

Density, g/cm3 13
7.7

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13 to 100
160 to 310
Resilience: Unit (Modulus of Resilience), kJ/m3 1790 to 4660
380 to 2070
Stiffness to Weight: Axial, points 4.7
14
Stiffness to Weight: Bending, points 12
25
Strength to Weight: Axial, points 18 to 27
25 to 36
Strength to Weight: Bending, points 15 to 20
23 to 29
Thermal Shock Resistance, points 41 to 61
15 to 21

Alloy Composition

Carbon (C), % 0
0 to 0.040
Chromium (Cr), % 0
19 to 21.5
Copper (Cu), % 13.5 to 14.5
0
Gold (Au), % 9.5 to 10.5
0
Iron (Fe), % 0
59.5 to 67.4
Manganese (Mn), % 0
8.0 to 10
Nickel (Ni), % 0
5.5 to 7.5
Nitrogen (N), % 0
0.15 to 0.4
Palladium (Pd), % 34 to 36
0
Phosphorus (P), % 0
0 to 0.045
Platinum (Pt), % 9.5 to 10.5
0
Silicon (Si), % 0
0 to 1.0
Silver (Ag), % 29 to 31
0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0.8 to 1.2
0
Residuals, % 0 to 0.3
0