SAE-AISI 1108 Steel vs. Chromium 33

SAE-AISI 1108 steel belongs to the iron alloys classification, while chromium 33 belongs to the otherwise unclassified metals. 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 SAE-AISI 1108 steel and the bottom bar is chromium 33.

SAE-AISI 1108 (G11080) Carbon Steel Chromium Alloy 33 (R20033)

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		190
Elastic (Young's, Tensile) Modulus, GPa		200

Elongation at Break, %		23 to 34
Elongation at Break, %		45

Poisson's Ratio		0.29
Poisson's Ratio		0.27

Shear Modulus, GPa		73
Shear Modulus, GPa		81

Tensile Strength: Ultimate (UTS), MPa		380 to 440
Tensile Strength: Ultimate (UTS), MPa		850

Tensile Strength: Yield (Proof), MPa		220 to 360
Tensile Strength: Yield (Proof), MPa		430

Thermal Properties

Latent Heat of Fusion, J/g		250
Latent Heat of Fusion, J/g		320

Specific Heat Capacity, J/kg-K		470
Specific Heat Capacity, J/kg-K		480

Thermal Expansion, µm/m-K		12
Thermal Expansion, µm/m-K		14

Otherwise Unclassified Properties

Base Metal Price, % relative		1.8
Base Metal Price, % relative		36

Density, g/cm³		7.9
Density, g/cm³		7.9

Embodied Carbon, kg CO₂/kg material		1.4
Embodied Carbon, kg CO₂/kg material		6.0

Embodied Energy, MJ/kg		18
Embodied Energy, MJ/kg		84

Embodied Water, L/kg		46
Embodied Water, L/kg		250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		95 to 110
Resilience: Ultimate (Unit Rupture Work), MJ/m³		320

Resilience: Unit (Modulus of Resilience), kJ/m³		130 to 340
Resilience: Unit (Modulus of Resilience), kJ/m³		450

Stiffness to Weight: Axial, points		13
Stiffness to Weight: Axial, points		14

Stiffness to Weight: Bending, points		24
Stiffness to Weight: Bending, points		25

Strength to Weight: Axial, points		13 to 16
Strength to Weight: Axial, points		30

Strength to Weight: Bending, points		15 to 16
Strength to Weight: Bending, points		25

Thermal Shock Resistance, points		12 to 14
Thermal Shock Resistance, points		21

Alloy Composition

Carbon (C), %		0.080 to 0.13
Carbon (C), %		0 to 0.015

Chromium (Cr), %		0
Chromium (Cr), %		31 to 35

Copper (Cu), %		0
Copper (Cu), %		0.3 to 1.2

Iron (Fe), %		98.9 to 99.24
Iron (Fe), %		25.7 to 37.9

Manganese (Mn), %		0.6 to 0.8
Manganese (Mn), %		0 to 2.0

Molybdenum (Mo), %		0
Molybdenum (Mo), %		0.5 to 2.0

Nickel (Ni), %		0
Nickel (Ni), %		30 to 33

Nitrogen (N), %		0
Nitrogen (N), %		0.35 to 0.6

Phosphorus (P), %		0 to 0.040
Phosphorus (P), %		0 to 0.020

Silicon (Si), %		0
Silicon (Si), %		0 to 0.5

Sulfur (S), %		0.080 to 0.13
Sulfur (S), %		0 to 0.010