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Cast nylon, also known as MC nylon (monomer casting nylon), is a widely used engineering plastic thanks to its strength, wear resistance, and lightweight properties. Whether you're a manufacturer, engineer, or fabricator, understanding cast nylon density and how to calculate its weight is crucial for designing and sourcing parts.
Cast nylon is a type of polyamide produced through a casting process rather than extrusion. It’s often used in mechanical components such as gears, pulleys, and bushings due to its:
High tensile strength
Excellent wear resistance
Low coefficient of friction
Good dimensional stability
MC nylon is a popular variation of cast nylon, especially in industrial applications.
The density of cast nylon typically ranges between 1.12 – 1.15 g/cm³ depending on additives, color, and moisture content.
| Material | Density (g/cm³) |
Standard Cast Nylon | 1.14 |
MC Nylon | 1.13 – 1.15 |
Oil-filled Nylon | 1.12 – 1.13 |
Knowing this density allows you to calculate the material's weight based on volume.
To calculate the weight of a cast nylon part, you can use this simple formula:
Weight (kg) = Volume (cm³) × Density (g/cm³) ÷ 1000
Say you have a solid round rod of MC nylon:
Diameter = 10 cm
Length = 100 cm
Density = 1.14 g/cm³
First, calculate the volume of the rod:
Volume = π × (radius)² × height
Volume = 3.1416 × (5)² × 100 = 7,854 cm³
Then calculate weight:
Weight = 7,854 × 1.14 ÷ 1000 = 8.96 kg
If you're frequently working with cast nylon sheets, rods, or blocks, use this quick calculator formula:
| Shape | Formula (cm) |
Rod | π × (D/2)² × L |
Sheet | Length × Width × Thickness |
Block | Length × Width × Height |
Multiply the volume by 1.14 g/cm³ (or your specific nylon grade density), then divide by 1000 to get kg.
Always confirm the exact density of your nylon grade from the supplier.
Consider moisture content, which can slightly affect weight.
For bulk parts, add a tolerance buffer to avoid underestimating material cost or load.
Understanding cast nylon density and how to calculate weight is essential for accurate design, cost estimation, and logistics. Whether you're using MC nylon, oil-filled variants, or standard cast nylon, the typical density of ~1.14 g/cm³ makes calculations straightforward. Use the provided formulas or build a simple calculator to streamline your workflow.