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.

Part shape

Outside diameter (OD)

Thickness

Quantity (pieces)

MaterialReference 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

1. Select the finished shape

Choose a disc or a ring. For a ring, the inside diameter must be smaller than the outside diameter.

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 Engineers

Engineering note: This is a geometric solid-metal weight estimate, not a quotation or a specification for porous filter media.

Filter End-Cap Ring Material Calculator

Estimate net flat annular blank area, volume and mass from dimensions and material density. A zero inside diameter gives a solid disc.

Flat blank only: formed walls, welds, perforations, coatings, scrap and machining allowances are excluded. This is a material estimate, not a strength or pressure-rating calculation.

Formula

A = π(OD² − ID²)/4; V = A × thickness; mass = V × density. Radial ring width = (OD − ID)/2. Batch mass = net mass × quantity.

End-cap planning questions

Does this include the formed end cap?

No. Enter the actual flat blank dimensions. A formed cap needs a drawing-based developed blank and manufacturing allowances.

Which density should I enter?

Use the relevant alloy density from your material information. The example density is arithmetic only and not a material certification.

Does the batch mass include sheet scrap?

No. This is the net finished blank mass. Use a cutting layout separately to estimate gross material consumption.

How does this extend the disc and ring calculator?

This focused end-cap planning variant adds radial ring width and batch output to the same annular geometry.