1. Select the finished shape
Choose a disc or a ring. For a ring, the inside diameter must be smaller than the outside diameter.
Engineering Tool · Metal Filter Discs
Metal Disc & Ring Weight Calculator
Calculate the solid metal volume and theoretical weight of a circular disc or annular ring from finished dimensions and material density.
Dimension basis: enter the finished outer diameter, centre opening, thickness and quantity. A solid disc has a centre opening of zero.
Enter disc dimensions
Choose a material or enter a verified custom density.
Reference densities are indicative; alloy condition and tolerances affect actual weight.
Calculated results
Solid metal before machining loss or perforation.
Weight per piece0.1246 kgtheoretical
Total weight1.246 kgall pieces
Metal face area0.007854 m²one face, opening subtracted
Metal volume per piece0.00001571 m³area × thickness
Formula and basis
A = π(OD² − ID²)/4; V = A × t; mass = V × density × quantity.
Dimensions convert to metres before calculation. ID = 0 for a solid disc.
How to use the disc weight calculator
2. Match the material
Select a reference density or enter the density on your alloy certificate.
3. Check manufacturing details
Confirm cut tolerances, porosity, perforations and coatings separately from this solid-metal estimate.
Frequently asked questions
Does this calculate perforated filter disc weight?
No. It assumes a solid metal disc or ring. Openings, mesh, sintered pores and supports need separate measurements or a validated correction.
What does inside diameter mean?
It is the diameter of a complete circular centre opening. Choose a solid disc when there is no opening.
Why may actual weight differ?
Thickness tolerance, alloy density, edge machining, perforations, coatings and bonded parts change the delivered weight.
Can I use this for a porous sintered disc?
Not without a measured apparent density or mass. The solid-metal density would overestimate a porous disc.
Need a finished filter disc?
Send the diameter, thickness, opening, material and drawing for a manufacturing review.
Contact Our EngineersEngineering note: This is a geometric solid-metal weight estimate, not a quotation or a specification for porous filter media.
