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SAE-AISI A9 Steel vs. Chromium 33

SAE-AISI A9 steel belongs to the iron alloys classification, while chromium 33 belongs to the otherwise unclassified metals. They have 40% of their average alloy composition in common. 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 SAE-AISI A9 steel and the bottom bar is chromium 33.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 74
81
Tensile Strength: Ultimate (UTS), MPa 770 to 2030
850

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 12
14

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
36
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.7
6.0
Embodied Energy, MJ/kg 70
84
Embodied Water, L/kg 82
250

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 73
30
Strength to Weight: Bending, points 24 to 46
25
Thermal Shock Resistance, points 25 to 66
21

Alloy Composition

Carbon (C), % 0.45 to 0.55
0 to 0.015
Chromium (Cr), % 4.8 to 5.5
31 to 35
Copper (Cu), % 0 to 0.25
0.3 to 1.2
Iron (Fe), % 87 to 90.5
25.7 to 37.9
Manganese (Mn), % 0 to 0.5
0 to 2.0
Molybdenum (Mo), % 1.3 to 1.8
0.5 to 2.0
Nickel (Ni), % 1.3 to 1.8
30 to 33
Nitrogen (N), % 0
0.35 to 0.6
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 1.0 to 1.2
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010
Vanadium (V), % 0.8 to 1.4
0