Steel and copper prices affect machinery costs directly, because they make up a large part of what goes into machine frames, castings, shafts, motors and wiring. When metal prices rise, factories raise quotes or shorten the time a quote is valid.
How much your price moves depends on how material-heavy your product is. A heavy casting with little machining follows metal prices closely. A precision part with many machining hours is driven more by labour and machine time.
Where the metals go
- Steel plate and sections form machine bases, frames, guards and fabricated structures.
- Steel bar and forgings become shafts, gears, pins and fasteners.
- Pig iron and steel scrap are the main inputs for grey iron and SG iron castings.
- Copper is used in motor windings, transformers, cables and busbars.
- Brass, which is mostly copper, is used for fittings, valves and turned parts.
- Aluminium appears in motor bodies, housings and some castings.
Products most exposed
Motors and pumps are highly exposed to copper, because the winding is a large share of the motor's material. Brass components follow copper prices almost directly. Castings follow scrap and pig iron. Large fabricated machines follow steel plate prices.
Machines with expensive controls and drives are less exposed. In a CNC machine, the controller, servo motors and ball screws may matter more than the cast bed. Their prices move with exchange rates and the supplier's own pricing, rather than metal markets.
For brass parts in particular, see how copper prices affect brass component costs.
How factories pass on changes
Most Indian factories quote a fixed price with a short validity period. When metals move fast, that period gets shorter. Some will offer a firm price only once you confirm the order and pay an advance, because they then buy material straight away.
For regular supply, a metal price adjustment clause is common. The price is split into a material part and a conversion part. The material part moves up or down with a published index, and the conversion part stays fixed. This shares the risk fairly and avoids constant renegotiation.
Agree the index, the base date, the review period and the threshold for change in writing. Without these details, every adjustment becomes an argument.
What you can do
Ask for a cost breakdown that shows material weight and grade separately from conversion. It helps you judge whether a price increase is fair. Place larger orders when you have a confirmed price, and avoid long gaps between quote and order. If you plan a year's supply, a blanket order with an agreed adjustment formula gives you stability.
Watch the quote validity date. A quote that has expired is not a price. Ask the factory to reconfirm before you issue the purchase order. For contract wording, see what an engineering purchase contract should include.
Next step
We can help you set up a fair adjustment formula and check cost breakdowns. A real price comes from a sourcing review of your product. Book a free sourcing review.