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Chromium 33 vs. SAE-AISI A3 Steel

Chromium 33 belongs to the otherwise unclassified metals classification, while SAE-AISI A3 steel belongs to the iron alloys. They have a modest 39% of their average alloy composition in common, which, by itself, doesn't mean much. There are 17 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 chromium 33 and the bottom bar is SAE-AISI A3 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 81
73
Tensile Strength: Ultimate (UTS), MPa 850
700 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 320
260
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 14
12

Otherwise Unclassified Properties

Base Metal Price, % relative 36
6.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 6.0
4.4
Embodied Energy, MJ/kg 84
67
Embodied Water, L/kg 250
78

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 30
25 to 77
Strength to Weight: Bending, points 25
23 to 48
Thermal Shock Resistance, points 21
23 to 70

Alloy Composition

Carbon (C), % 0 to 0.015
1.2 to 1.3
Chromium (Cr), % 31 to 35
4.8 to 5.5
Copper (Cu), % 0.3 to 1.2
0 to 0.25
Iron (Fe), % 25.7 to 37.9
88.7 to 92
Manganese (Mn), % 0 to 2.0
0.4 to 0.6
Molybdenum (Mo), % 0.5 to 2.0
0.9 to 1.4
Nickel (Ni), % 30 to 33
0 to 0.3
Nitrogen (N), % 0.35 to 0.6
0
Phosphorus (P), % 0 to 0.020
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.030
Vanadium (V), % 0
0.8 to 1.4