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R05240 Alloy vs. AISI 420 Stainless Steel

R05240 alloy belongs to the otherwise unclassified metals classification, while AISI 420 stainless steel belongs to the iron alloys. There are 18 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is R05240 alloy and the bottom bar is AISI 420 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 150
190
Elongation at Break, % 25
8.0 to 15
Poisson's Ratio 0.36
0.28
Shear Modulus, GPa 57
76
Tensile Strength: Ultimate (UTS), MPa 270
690 to 1720
Tensile Strength: Yield (Proof), MPa 170
380 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 210
280
Specific Heat Capacity, J/kg-K 190
480
Thermal Expansion, µm/m-K 6.8
10

Otherwise Unclassified Properties

Density, g/cm3 14
7.7
Embodied Water, L/kg 460
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 59
88 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 90
380 to 4410
Stiffness to Weight: Axial, points 6.3
14
Stiffness to Weight: Bending, points 13
25
Strength to Weight: Axial, points 5.4
25 to 62
Strength to Weight: Bending, points 6.8
22 to 41
Thermal Shock Resistance, points 18
25 to 62

Alloy Composition

Carbon (C), % 0 to 0.010
0.15 to 0.4
Chromium (Cr), % 0
12 to 14
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.010
82.3 to 87.9
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0 to 0.020
0 to 0.5
Nickel (Ni), % 0 to 0.010
0 to 0.75
Niobium (Nb), % 35 to 42
0
Nitrogen (N), % 0 to 0.010
0
Oxygen (O), % 0 to 0.020
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.0050
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tantalum (Ta), % 57.9 to 65
0
Titanium (Ti), % 0 to 0.010
0
Tungsten (W), % 0 to 0.050
0