Alloy Density Calculator (Rule of Mixtures)
Density of a two-component alloy or composite from weight fractions.
70/30 brass lands at ~8,360 kg/m³ — within 1% of handbook. Works for powders, composites, even solder alloys; only intermetallic compounds break the rule.
Formula
Alloy Density Calculator (Rule of Mixtures) is a free alloy density for design engineers, metallurgists and QA inspectors — instant, accurate and 100% client-side, with the governing formula and reference shown next to the result so the number can be defended, not just quoted.
About Alloy Density Calculator (Rule of Mixtures)
Density of a two-component alloy or composite from weight fractions. The calculation implements 1/ρ_alloy = Σ(wᵢ/ρᵢ) (inverse rule for weight fractions) (Rule of mixtures — materials science texts). 70/30 brass lands at ~8,360 kg/m³ — within 1% of handbook. Works for powders, composites, even solder alloys; only intermetallic compounds break the rule.
How to use Alloy Density Calculator (Rule of Mixtures)
- 1Enter Component 1 density in kg/m³ (Cu 8960 · Al 2700 · Fe 7870 · Zn 7140 · Sn 7280).
- 2Enter Component 1 weight fraction in %.
- 3Enter Component 2 density in kg/m³.
- 4Read Alloy density instantly — no submit button needed.
- 5Need US units? Flip the SI/Imperial toggle and every field converts.
Why use Alloy Density Calculator (Rule of Mixtures)?
- ✓Implements the standard formula — 1/ρ_alloy = Σ(wᵢ/ρᵢ) (inverse rule for weight fractions)
- ✓Reference cited on-page: Rule of mixtures — materials science texts
- ✓One-click SI ⇄ Imperial toggle — values convert in place, physics stays in SI
- ✓Live worked example: the substitution recomputes from your numbers
- ✓Runs entirely in your browser — nothing uploaded, free forever
Frequently asked questions
What formula does the Alloy Density Calculator (Rule of Mixtures) use?+
It computes 1/ρ_alloy = Σ(wᵢ/ρᵢ) (inverse rule for weight fractions), per Rule of mixtures — materials science texts. The formula is displayed under the result along with a worked example substituted with your own inputs.
What should I keep in mind when using this calculator?+
70/30 brass lands at ~8,360 kg/m³ — within 1% of handbook. Works for powders, composites, even solder alloys; only intermetallic compounds break the rule.
Where do the material property defaults come from?+
Defaults are standard handbook values (ASM, manufacturer datasheets, the cited standard). Always substitute certified values from your material's test certificate for critical work.
Is the Alloy Density Calculator (Rule of Mixtures) free to use?+
Yes — completely free, no sign-up, no limits. It runs client-side in your browser, so inputs stay private and results are instant even on slow connections.
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