Investment Casting for the Machinery Industry

In machinery manufacturing, investment casting is one of the efficient ways to produce strong, complex parts close to final dimensions. BRK Metal casts parts to drawing for machine builders, from 1 g to 25 kg.

Why Investment Casting for Machine Parts?

• Complex geometry: Forms that are hard to machine can be cast as one piece.
• Less machining: Parts come out close to final dimensions, which reduces machining time and material loss.
• Repeatable dimensions: Variation between parts stays low in series orders.
• Part consolidation: Several welded or assembled parts can be converted into a single casting.

Typical Parts

Levers, joints, brackets, gears, cams, housings, covers, connecting parts and mechanism elements are well suited to investment casting.

Material Selection

• 4140 steel: High strength and wear resistance after heat treatment.
• Low-carbon steels: Welded or case-hardened parts.
• 304 and 316 stainless: Corrosive environments or where hygiene matters.
• Bronze: Bushings and sliding surfaces.
• Aluminum: Lightweight housings and covers.

For design tips, read our investment casting design guidelines.

Tolerances and Quality

We cast parts to customer drawings. We can produce parts from 1 g to 25 kg and meet VDG P690 D3, the most precise class of the standard. See our tolerances page for the values.

Design Points for Machinery Parts

• Decide which features will be cast to size and which will be machined.
• Keep wall thickness as even as possible to reduce shrinkage risk.
• Provide the expected annual quantity, since it affects tooling decisions.

Frequently Asked Questions

Which materials are used for Machinery parts?

4140, low-carbon steels, 316 and 304 stainless steels and A356 aluminium are the most common choices.

Can machined parts be converted to castings?

Often yes, especially small and complex parts. Send the part drawing and we will assess it.

What part sizes and tolerances can you cast?

We cast parts from 1 g to 25 kg and meet tolerances up to VDG P690 D3.

What do you need for a quotation?

A drawing or 3D model, the material and the annual quantity. Price and minimum order quantity depend on the part.

Request a Quote

Send us your drawing, material and annual quantity through our contact page. About 60% of our production is exported, most of it to Europe. To learn more about the method, read what is investment casting.