Copper Flat Bar Weight Calculator
Calculate the weight of Copper Flat Bar by entering your dimensions. The density of Copper is 0.324 lb/in³ (8968 kg/m³). Use this calculator for quick stock weight estimates in your CNC machining projects. Accurate weight calculations are essential for shipping quotes, material cost estimation, fixturing load analysis, and structural design verification. The theoretical weight formula assumes a uniform cross-section and standard alloy density; actual weights may differ slightly by grade and mill tolerance. Weight data is calculated using the standard volumetric formula multiplied by the material density constant shown above.
Material Properties
| Material | Copper |
| Shape | Flat Bar |
| Density | 0.324 lb/in³ / 559.9 lb/ft³ / 8968 kg/m³ |
| Example Weight | 1.944 lb / 0.882 kg |
Compare Materials — Flat Bar
| Material | Weight (lb) | Weight (kg) |
|---|---|---|
| Aluminum | 0.585 | 0.265 |
| Titanium | 0.966 | 0.438 |
| Cast Iron | 1.56 | 0.708 |
| Steel | 1.7 | 0.771 |
| Stainless Steel | 1.725 | 0.782 |
| Brass | 1.839 | 0.834 |
| Copper (current) | 1.944 | 0.882 |
Sourcing and Use Notes
C110 ETP (electrolytic tough pitch) copper is the standard electrical conductor stock — minimum 99.9% Cu with excellent conductivity but poor machinability because of its gummy chip. C145 tellurium copper alloys in a small amount of tellurium to break chips cleanly, sacrificing about 5% conductivity for production-line machinability. Copper oxidizes quickly in shop air; bare stock will develop a brown-to-green patina within weeks, so order soft-temper coiled sheet or clean and protect finished parts within days. Copper accepts silver brazing readily and is ductile enough for tight bend radii without annealing.
Rectangular flat bar is the go-to stock for brackets, fabricated frames, machine slides, gibs, knife edges, and electrical bus bars. Standard hot-rolled flat bar holds about ±1.5% on cross-section per ASTM A6 — fine for weldments but loose for machine-fit features, so over-size for finishing operations. Cold-finished flat bar (1018 or 12L14 in steel; 6061-T6511 in aluminum) holds tighter tolerances and presents a clean machinable surface. Edges are roll-formed with a small radius; specify '90-degree cut edge' if a sharp corner is critical.
Common Applications
Copper Flat Bar is a standard stock form used in structural frames, machine bases, brackets, and fabricated components. Its consistent cross-section simplifies weight-per-foot calculations and material takeoffs for procurement and shipping cost estimates. Engineers and machinists rely on theoretical weight data during the quoting and planning stages before final parts are produced. For large orders or weight-critical designs, request certified mill test reports (MTRs) to confirm actual density and alloy composition.
Sourcing and Weight Tolerance Note
This weight is based on the theoretical density of Copper. Mill tolerances (ASTM A6 allows ±2.5% on cross-sectional area for structural shapes) and surface treatments (anodizing, plating, painting) may add 1–3% to actual shipped weight. Order 5–10% material overage to account for saw kerfs and offcuts. Always verify actual material density with your supplier's material test report (MTR) for critical structural or load-bearing applications. Compare weights across materials using the comparison table above to make informed material selection decisions for your project.