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PP vs. Steel Freight-Weight Calculator
Enter the weight of your current steel part. This estimates the equivalent weight if the same geometry were machined in polypropylene instead — based on published density data, not a generic multiplier.
Your Part
Assumes equivalent part geometry. Steel density ~7.85 g/cm³; PP density 0.89–0.92 g/cm³ (source data on this page). Estimate only — actual part weight depends on final wall thickness and design for PP.
![Shop-Floor Carbon Steel CNC Machining Guide [2026]](https://zhenlingmetal.com/wp-content/uploads/2026/08/carbon-steel-cnc-machining-handbook-r2-featured-150x150.png)
