Aluminum Circle & Disc Weight Calculator
Precision tool for calculating individual blank weight, volume, and total batch tonnage for aluminum circles, discs, and round plates used in deep drawing, spinning, and cookware stamping.
- • 1050 / 1060 / 1100 Density: 2.71 g/cm³ (0.0979 lb/in³)
- • 3003 / 3004 Density: 2.73 g/cm³ (0.0986 lb/in³)
- • Metric Formula: W (kg) = π × (D/2)² × T × ρ / 1,000,000
- • Imperial Formula: W (lb) = π × (D/2)² × T × ρ (lb/in³)
1. Select Alloy Grade & Dimensions
Aluminum Circle Mass Formulation & Stamping Yield
Calculating theoretical mass for circular blanks requires evaluating the volume of a right cylinder ($\pi r^2 h$). In industrial blanking operations, this theoretical mass determines raw material requirements before accounting for square-to-circle punch scrap loss (~21.5%).
ASTM B209 Cookware Blank Tolerances
According to ASTM B209 and EN 485-4, cold-rolled aluminum circles feature precise thickness tolerances. Deep drawing quality (DDQ) circles in O-temper (soft annealed) maintain uniform grain structure to prevent earing defects during press forming.
Frequently Asked Questions
Q: Why is 1050 alloy preferred for aluminum cookware circles?
Alloy 1050 has high purity (99.5% Al), providing exceptional thermal conductivity, superior ductility for deep drawing, and excellent anodizing characteristics for non-stick pots and pans.
Q: How much scrap is generated when punching circles from square sheets?
Punching a circle of diameter $D$ from a square of width $D$ results in a theoretical area utilization of $\pi/4 \approx 78.5\%$, generating approximately 21.5% offcut scrap.