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Chromium 33 vs. SAE-AISI M7 Steel

Chromium 33 belongs to the otherwise unclassified metals classification, while SAE-AISI M7 steel belongs to the iron alloys. They have a modest 38% 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 (9, in this case) are not shown.

For each property being compared, the top bar is chromium 33 and the bottom bar is SAE-AISI M7 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 81
77
Tensile Strength: Ultimate (UTS), MPa 850
760 to 2210

Thermal Properties

Latent Heat of Fusion, J/g 320
270
Specific Heat Capacity, J/kg-K 480
450
Thermal Expansion, µm/m-K 14
12

Otherwise Unclassified Properties

Base Metal Price, % relative 36
18
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 6.0
8.9
Embodied Energy, MJ/kg 84
130
Embodied Water, L/kg 250
100

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 30
26 to 76
Strength to Weight: Bending, points 25
23 to 47
Thermal Shock Resistance, points 21
24 to 69

Alloy Composition

Carbon (C), % 0 to 0.015
1.0 to 1.1
Chromium (Cr), % 31 to 35
3.5 to 4.0
Copper (Cu), % 0.3 to 1.2
0 to 0.25
Iron (Fe), % 25.7 to 37.9
79.8 to 83.8
Manganese (Mn), % 0 to 2.0
0.15 to 0.4
Molybdenum (Mo), % 0.5 to 2.0
8.2 to 9.2
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
0.2 to 0.55
Sulfur (S), % 0 to 0.010
0 to 0.030
Tungsten (W), % 0
1.4 to 2.1
Vanadium (V), % 0
1.8 to 2.3