QuotedPartCost guides · Updated 2026-10-30
How much does it cost to machine aluminum?
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6061 is easy to machine compared with many steels, but the finished price still depends on stock size, setup count, features, and quantity. This page prices a 4 × 3 × 1 inch 6061-T6 bracket at quantities 1, 10, and 100 with material, machine labor, setup, markup, and lead days visible.
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6061 is not just a price-per-pound question
The catalog lists 6061-T6 at $4.31/lb for this example and a machinability factor of 1.00. Those inputs control the material line and the removal-rate formulas, but they do not decide how many setups the part needs. The bracket has a pocket, four through holes, two tapped side holes, and a second approach.
The pricing model therefore keeps stock and labor separate. A cheaper blank can lose its advantage if it requires extra handling, a larger saw cut, or a more complex workholding.
- Use the actual stock quote when available.
- Confirm T6 versus T651 plate condition.
- Treat the catalog price as an editable starting input.
The quantity break is arithmetic
The fixed programming and setup work is charged to the lot. At quantity one, that lot work dominates the unit price. At quantity 100, the same minutes are divided across the run while material and cycle time repeat. The pricing model prints both lot quote and quoted unit price so the arithmetic can be audited.
A shop should replace the catalog's $95/hour VMC rate and 30% markup with its own values before sending the customer a number.
- Keep setup in the quote even when it is amortized.
- Show the buyer what changes at each quantity.
- Use completed-job actuals to update cycle time.
When 6061 needs a second look
Thin walls, deep pockets, cosmetic surfaces, tight flatness, and anodize can change the route. The fictional workholding assumes ordinary access and no outside finish. If the drawing calls for Type II, hardcoat, masking, or a CMM report, add those as separate dated lines.
This example is useful because the assumptions are visible. It is not a promise that a different machine, blank, or tolerance will land at the same figure.
- Mark finish and inspection exclusions.
- Check workholding before accepting the cycle.
- Rerun the pricing model after geometry or quantity changes.
Use the result as an estimator's starting point
For this cost to machine 6061 aluminum: a quantity-break example example, an estimator can challenge every cnc milling input. Replace this fictional geometry with the customer's STEP file or drawing, then replace the catalog stock price, work-center rate, setup minutes, and markup with the shop's current 3-axis vmc values.
Keep the lot setup visible when you send this quote for cost to machine 6061 aluminum: a quantity-break example. Confirm stock form, material condition, tolerances, inspection, deburr, and outside-process timing before promising a ship date. If one of those inputs changes, rerun the calculation and show the buyer what moved.
- Show both unit and lot totals.
- Label illustrative values clearly.
- Have the estimator review access, tooling, and first-piece risk.
6061-T6 reference bracket priced by the US engine
- • Material: Aluminum 6061-T6; the US catalog input is $9.50/lb and machinability 1.00 relative to 6061-T6.
- • Process: CNC milling; the pricing model includes CAM programming, 12 toolpaths, Mill, 3 setups, Deburr, Inspect and calculates the quantities shown.
- • Geometry: 4 × 3 × 1 in; Fictional 4 × 3 × 1 in prismatic reference part. Two mill setups are inferred from the top and side features.
- • Markup: 30% catalog default. Taxes, freight, customer-specific rates, and unlisted outside services are excluded.
- • Every dollar and minute in the table is a reproducible example from the stated inputs, not a market average or supplier promise.
| Quantity | Setup min (lot) | Run min (part) | Material / part | Machine + labor / part | Outside / part | Quoted / part | Lot quote | Lead days |
|---|---|---|---|---|---|---|---|---|
| 1 | 191.0 | 13.5 | $45.00 | $19.25 | $0.00 | $464.53 | $464.53 | 11 |
| 10 | 191.0 | 13.5 | $15.88 | $19.26 | $0.00 | $83.77 | $837.70 | 11 |
| 100 | 191.0 | 13.5 | $9.49 | $19.25 | $0.00 | $41.17 | $4117.00 | 14 |
Sources and limits
Claims are dated where they can change. Product calculations are examples from the stated inputs, not a promise about a customer's quote. Competitor wording is attributed to the source shown.
- The stock price input is taken from the US catalog, which records an Online Metals check on 2026-10-21. — source (checked 2026-10-21)
Questions
Is this a guaranteed 6061-t6 aluminum quote?
No. It is a transparent estimating example. Replace the example inputs with the customer's drawing, stock quote, current shop rates, and inspection or finish requirements.
Why does quantity change the unit price?
Setup and programming are lot costs. The pricing calculation spreads those costs across the stated quantity and keeps the per-part run time and material inputs visible.
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