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SAE-AISI 4150 Steel vs. CPVC

SAE-AISI 4150 steel and CPVC belong to fundamentally different material chemistries. SAE-AISI 4150 steel is a metal, while CPVC is a polymeric material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 14 material properties with values for both materials. Properties with values for just one material (30, 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 CPVC.

SAE-AISI 4150 (G41500) Cr-Mo SteelChlorinated Polyvinyl Chloride (CPVC, PVC-C)
Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
2.8
Elongation at Break, % 12 to 20
4.0
Tensile Strength: Ultimate (UTS), MPa 660 to 1310
50

Thermal Properties

Maximum Temperature: Mechanical, °C 420
80
Specific Heat Capacity, J/kg-K 470
780
Thermal Conductivity, W/m-K 42
0.31
Thermal Expansion, µm/m-K 13
65

Otherwise Unclassified Properties

Density, g/cm3 7.8
1.5

Common Calculations

Stiffness to Weight: Axial, points 13
1.0
Stiffness to Weight: Bending, points 24
32
Strength to Weight: Axial, points 24 to 47
9.4
Strength to Weight: Bending, points 22 to 34
20
Thermal Diffusivity, mm2/s 11
0.27
Thermal Shock Resistance, points 19 to 39
20