SAE-AISI 4150 Steel vs. CAP

SAE-AISI 4150 steel and CAP belong to fundamentally different material chemistries. SAE-AISI 4150 steel is a metal, while CAP is a polymeric material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 11 material properties with values for both materials. Properties with values for just one material (31, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is SAE-AISI 4150 steel and the bottom bar is CAP.

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, %		12 to 20
Elongation at Break, %		35 to 50

Tensile Strength: Ultimate (UTS), MPa		660 to 1310
Tensile Strength: Ultimate (UTS), MPa		28 to 45

Tensile Strength: Yield (Proof), MPa		380 to 1220
Tensile Strength: Yield (Proof), MPa		22 to 40

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		82 to 180
Resilience: Ultimate (Unit Rupture Work), MJ/m³		9.1 to 22

Strength to Weight: Axial, points		24 to 47
Strength to Weight: Axial, points		6.5 to 10

Strength to Weight: Bending, points		22 to 34
Strength to Weight: Bending, points		17 to 23

Thermal Diffusivity, mm²/s		11
Thermal Diffusivity, mm²/s		0.14

Specific Heat Capacity, J/kg-K		470
Specific Heat Capacity, J/kg-K		1480

Thermal Conductivity, W/m-K		42
Thermal Conductivity, W/m-K		0.25

Density, g/cm³		7.8
Density, g/cm³		1.2

SAE-AISI 4150 Steel vs. CAP

Mechanical Properties

Thermal Properties

Otherwise Unclassified Properties

Common Calculations

Find Materials

Table of Contents

Thermal Expansion, µm/m-K		13
Thermal Expansion, µm/m-K		14