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Chromium 33 vs. SAE-AISI 1021 Steel

Chromium 33 belongs to the otherwise unclassified metals classification, while SAE-AISI 1021 steel belongs to the iron alloys. They have a modest 33% of their average alloy composition in common, which, by itself, doesn't mean much. There are 21 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 1021 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 45
17 to 27
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 81
73
Tensile Strength: Ultimate (UTS), MPa 850
480 to 530
Tensile Strength: Yield (Proof), MPa 430
260 to 450

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 14
12

Otherwise Unclassified Properties

Base Metal Price, % relative 36
1.8
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 6.0
1.4
Embodied Energy, MJ/kg 84
18
Embodied Water, L/kg 250
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
84 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 450
180 to 530
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 30
17 to 19
Strength to Weight: Bending, points 25
17 to 18
Thermal Shock Resistance, points 21
15 to 17

Alloy Composition

Carbon (C), % 0 to 0.015
0.18 to 0.23
Chromium (Cr), % 31 to 35
0
Copper (Cu), % 0.3 to 1.2
0
Iron (Fe), % 25.7 to 37.9
98.8 to 99.22
Manganese (Mn), % 0 to 2.0
0.6 to 0.9
Molybdenum (Mo), % 0.5 to 2.0
0
Nickel (Ni), % 30 to 33
0
Nitrogen (N), % 0.35 to 0.6
0
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.010
0 to 0.050