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AISI 304 Stainless Steel vs. ASTM B540 Palladium

AISI 304 stainless steel belongs to the iron alloys classification, while ASTM B540 palladium belongs to the otherwise unclassified metals. There are 23 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is AISI 304 stainless steel and the bottom bar is ASTM B540 palladium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 8.0 to 43
1.1 to 14
Fatigue Strength, MPa 210 to 440
350
Poisson's Ratio 0.28
0.38
Shear Modulus, GPa 77
39
Shear Strength, MPa 400 to 690
500 to 700
Tensile Strength: Ultimate (UTS), MPa 580 to 1180
830 to 1240
Tensile Strength: Yield (Proof), MPa 230 to 860
620 to 1000

Thermal Properties

Latent Heat of Fusion, J/g 290
140
Melting Completion (Liquidus), °C 1450
1220
Melting Onset (Solidus), °C 1400
1020
Specific Heat Capacity, J/kg-K 480
240
Thermal Expansion, µm/m-K 17
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
4.9 to 5.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
3.5 to 3.9

Otherwise Unclassified Properties

Density, g/cm3 7.8
13

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86 to 250
13 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 1870
1790 to 4660
Stiffness to Weight: Axial, points 14
4.7
Stiffness to Weight: Bending, points 25
12
Strength to Weight: Axial, points 21 to 42
18 to 27
Strength to Weight: Bending, points 20 to 32
15 to 20
Thermal Shock Resistance, points 12 to 25
41 to 61

Alloy Composition

Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 18 to 20
0
Copper (Cu), % 0
13.5 to 14.5
Gold (Au), % 0
9.5 to 10.5
Iron (Fe), % 66.5 to 74
0
Manganese (Mn), % 0 to 2.0
0
Nickel (Ni), % 8.0 to 10.5
0
Nitrogen (N), % 0 to 0.1
0
Palladium (Pd), % 0
34 to 36
Phosphorus (P), % 0 to 0.045
0
Platinum (Pt), % 0
9.5 to 10.5
Silicon (Si), % 0 to 0.75
0
Silver (Ag), % 0
29 to 31
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0.8 to 1.2
Residuals, % 0
0 to 0.3