What is the density of bronze?

Bronze density varies by alloy composition. Commercial bronze (C220, 90% Cu / 10% Zn) is about 8800 kg/m³. Phosphor bronze (C510) is around 8850 kg/m³. Aluminum bronze (C630) is approximately 7600–7700 kg/m³, lighter due to its aluminum content. Silicon bronze (C655) sits at about 8530 kg/m³.

How is bronze plate weight calculated?

The formula is: Weight (kg) = Length (m) x Width (m) x Thickness (m) x Density (kg/m³). All dimensions are converted to meters first, giving a volume in m³, which is then multiplied by the alloy density.

What is the difference between bronze and brass?

Bronze is primarily a copper-tin alloy, while brass is a copper-zinc alloy. Bronze is generally harder and more resistant to corrosion and metal fatigue. Many commercial grades contain additional alloying elements such as aluminum, silicon, or phosphorus. Densities of both families overlap in the 8400–8900 kg/m³ range.

Which bronze alloy is best for marine or structural plate?

Naval brass (C464) and aluminum bronze (C630, C954) are widely used for marine hardware and structural components due to their excellent corrosion resistance in seawater. Aluminum bronze C954 has a density of about 7450 kg/m³, making it lighter than most other bronze grades.

Can I calculate the weight of multiple plates at once?

Yes. Set the Quantity field to the number of plates and the calculator multiplies the per-plate weight by that number, showing both the total weight and the individual plate weight.

Does this calculator support imperial units?

Yes. Length and width can be entered in inches or feet, and thickness in inches. All values are converted to meters internally before the density formula is applied.

How accurate are the results?

Results are theoretical weights based on nominal dimensions and standard alloy densities per ASTM B36 / B100 specifications. Actual weights may vary by approximately 2–5% due to manufacturing tolerances and compositional variations within each alloy grade.

Bronze Plate Weight Calculator

Name: Bronze Plate Weight Calculator
Availability: InStock
Author: Nham Vu

Enter the length, width, and thickness of a bronze plate, pick the alloy grade, and instantly get the weight in kg and lbs.

Plate Dimensions

Length

Width

Thickness

Bronze Alloy Grade

Quantity (plates)

Formula Reference

Weight (kg) = L (m) × W (m) × T (m) × ρ (kg/m³)

L = length, W = width, T = thickness, ρ = alloy density. All dimensions are converted to meters before calculation. Phosphor bronze C510 has a typical density of 8850 kg/m³.

Enter plate dimensions on the left and click Calculate.

Bronze Alloy Densities

Alloy	Typical Use	kg/m³	lb/in³
C220	Commercial bronze, architecture	8800	0.318
C230	Red brass, plumbing hardware	8750	0.316
C260	Cartridge brass, cold working	8500	0.307
C464	Naval brass, marine fittings	8470	0.306
C510	Phosphor bronze 5% Sn, springs	8850	0.320
C521	Phosphor bronze 8% Sn, bearings	8800	0.318
C655	Silicon bronze, marine hardware	8530	0.308
C630	Aluminum bronze 5%, valves	7700	0.278
C954	Aluminum bronze 9%, bushings	7450	0.269

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Summary

Enter the length, width, and thickness of a bronze plate, pick the alloy grade, and instantly get the weight in kg and lbs.

How it works

Enter the plate length in your preferred unit (mm, cm, m, in, or ft).
Enter the plate width in the same or a different unit.
Enter the plate thickness — typically in mm or inches for structural plate.
Select the bronze alloy grade; the certified density is applied automatically.
Optionally enter a quantity to calculate the total weight for multiple plates.
Click Calculate Weight to see results in kg and lbs with a full dimensional breakdown.

Use cases

Estimating bronze plate weight for fabrication quotes and material procurement.
Calculating shipping and freight costs for heavy bronze plate stock orders.
Comparing bronze alloy grades by weight for marine, bearing, or architectural applications.
Preparing bills of materials for decorative, industrial, and structural bronze components.
Checking structural dead load from bronze floor plates or ornamental panels.
Verifying plate weight against supplier mill certificates for quality assurance.
Batch weight calculations for cut-to-size bronze plate orders.
Estimating raw material cost by combining plate weight with price per kg.

Frequently Asked Questions

Last updated: 2026-06-21 · Reviewed by Nham Vu