Producer Price Index for copper and brass mill shapes, the rolled and drawn products a mill makes from refined copper and brass. It sits between refined copper and finished wire or fittings.
Paste straight into Excel, Google Sheets or an email. Spreadsheet format lands as two columns.
| Month | Value | Change m/m |
|---|---|---|
| Sep 2026 | +1.4% | |
| Aug 2026 | +2.7% | |
| Jul 2026 | −0.9% | |
| Jun 2026 | −0.1% | |
| May 2026 | +4.6% | |
| Apr 2026 | +0.9% | |
| Mar 2026 | +0.2% | |
| Feb 2026 | +2.4% | |
| Jan 2026 | +4.9% | |
| Dec 2025 | +3.1% | |
| Nov 2025 | +3.2% | |
| Oct 2025 | +4.2% | |
| Sep 2025 | −4.5% |
Same numbers as the chart, straight from BLS. Dates are the first of each period, the way BLS reports them.
Copper and brass shapes rose 30.0% over the last 12 months, but 1 of its main inputs rose faster: yellow brass scrap +36.6%. That cost pressure may still pass through to prices.
Metals and metal productsNonferrous metalsNonferrous mill shapes
Sources: WPU102502 (Copper and Brass Mill Shapes); IMF Primary Commodity Prices via FRED, PCOPPUSDM.
Since 2016, this index has followed the copper price in the same month and moved about two thirds as far as it over a year.
Over the 12 months to Jul 2026, the copper price rose 38.6%. Over the 12 months to Sep 2026, this index rose 30.0%.
A starting point citing this series by name and code. Replace the bracketed terms with your contract's actual scope before use.
The [affected portion] of the Contract Price shall be adjusted using US PPI — Copper and Brass Mill Shapes (BLS series WPU102502), published by BLS. Base Period: the index value published for September 2026 (or the month of contract signing, if different) is the Base Value. Adjustment: at each Adjustment Date, the Current Value is the most recently published three-month average of the index (the Averaging Window). The Escalation Factor equals Current Value divided by Base Value. Cap: the Escalation Factor applied under this clause shall not exceed 1.10 or fall below 0.90 (a 10% cap and floor) in any single Adjustment Date, regardless of the index's actual movement. [Replace bracketed terms with your contract's actual affected-portion definition and adjustment-date schedule before use. This is a drafting starting point, not legal advice.]
Fabricators that buy copper or brass mill products for machined or formed parts escalate against this series, since it prices the mill product they receive rather than refined copper or finished wire.
Divide the current value of BLS series WPU102502 (Copper and Brass Mill Shapes) by its value at contract signing, then apply that ratio to the copper part of the price. A usable clause also names an averaging window, a rule for revised values and missing months, and a cap.
Escalake tracks US PPI — Copper and Brass Mill Shapes, applies your formula, and gives both sides a number they can confirm, no spreadsheet required.