DECISION GUIDE
Forging vs CNC machining:
the real cost comparison.
Both processes make the same part. They just charge you for different things — and which one wins depends on numbers you already have.
Quick answer
CNC machining from solid wins for prototypes and small runs — no tooling, instant start. Forging plus finish machining wins at volume: you pay for a die once, then every part after it is cheaper, stronger and faster to make. The crossover point is a volume — and it’s knowable before you commit.
What you’re actually paying for
A machined part’s price is mostly spindle hours and bought material. You purchase a block at finished weight plus 50–80% extra, then pay a machine to remove that extra as chips. A forged part’s price is mostly die amortisation plus near-net material — the press forms the geometry in seconds, and machining only touches critical faces.
| Dimension | Forged blank + CNC | Machined from solid |
|---|---|---|
| Cost driver | Die + press cycle + light machining | Machine hours × material bought |
| Material used | ≈ finished weight + flash | Finished weight + chips |
| Tooling | Required (in-house at XPF) | None |
| Best batch | Mid to high volume | Prototype to small series |
The crossover is a volume — here’s the logic
Forging adds a fixed cost (the die) and lowers the variable cost per part. Machining has zero fixed cost and a high variable cost. Somewhere between those two lines is your break-even quantity. What moves it:
- Annual volume — more parts spread the same die cost thinner
- Buy-to-fly ratio — the more material machining removes, the more forging saves
- Geometry — 3-D structural shapes pay back fastest; flat plates rarely justify a die
- Machining content — long cycle-time parts convert best
On qualifying projects we’ve reported around 40% unit-cost reduction . That is a project outcome, not a promise — your numbers decide yours.
Strength changes too
Forging isn’t only about cost. Bar stock has straight grain; machining cuts through it at every feature. Forging moves the grain around the part’s shape — following the load paths. For fatigue-loaded parts (crank arms, links, brackets) that’s the difference between a part that survives and one that doesn’t.
When we tell you to keep machining
R&D prototypes. One-offs. Parts still changing every month — tooling them early wastes money. Send those to any good machine shop (or ours — we machine too). Convert when the design freezes and the volume justifies it.
How to get your crossover number
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Send the drawingSame file your machine shop has — STEP / DWG / PDF
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Free conversion reviewFeasibility, route, cost range at your volume
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Decide with numbersDie cost vs per-part savings — on one page
FAQ
Common questions
Which file formats can I send?
STEP, STP, DWG, DXF and PDF — even a clear photo of a print works for a first feasibility opinion.
Do you sign NDAs?
Yes. Tooling and dies are designed and built in-house, so your drawings never travel to a third-party die shop.
How fast do you reply to a drawing?
Most drawings receive a feasibility opinion and cost range within 3 working days.
Which alloys can you forge?
6061, 6063, 6082 and 7075 — every batch ships with a mill certificate.
What press sizes do you run?
Closed-die forging presses from 300T to 2500T, covering small components up to large structural parts.
Can you machine and finish parts too?
Yes — CNC finishing to Ra 0.8 (per-drawing review), plus anodising Type II/III, sandblasting, powder coating and electrophoresis.
What quality documents do you provide?
A mill certificate per alloy batch and a dimensional report with every shipment; PPAP and FAI documentation on request.
Do you support prototypes and small batches?
Yes — batches are quoted per part number depending on size and die amortisation, and prototypes are possible.
Where do you ship from?
Our factory in Guangming District, Shenzhen, with export packing and worldwide delivery.
What is your first-pass yield?
99% of parts pass first inspection — a measured number, not a slogan.
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MATERIAL GUIDES
6061 properties · 7075 properties · 6061 vs 7075 · What is billet aluminium · Forging vs casting · Forged blanks vs billet
Want your crossover number?
Free conversion review — one drawing is enough.