The mechanism
A cold rolled steel sheet escalation clause indexes the portion of the contract price tied to cold rolled steel sheet to a published series instead of fixing it at signing. The benchmark is the BLS producer price index for Cold Rolled Steel Sheet and Strip, series WPU101707.
Cold rolled steel sheet is a real input cost in automotive stamping, appliance manufacturing, and HVAC ductwork work. Its price can move more over a contract term than a fixed-price contingency is built to absorb, so indexing the portion of the contract price tied to cold rolled steel sheet moves that risk onto the published index instead of onto one party.
What's specific to cold rolled steel sheet
Cold-rolled sheet carries a processing premium over hot-rolled coil that widens and narrows on its own cycle, driven mainly by auto demand. A clause indexed to a hot-rolled or generic "steel" series misses the part of a cold-rolled price move that comes from that conversion spread.
The calculation, step by step
- Base index value. The index value at the base period, usually the month of contract signing or bid submission.
- Current index value. The index value at the adjustment date, usually the month of delivery or invoicing.
- Ratio. Current value divided by base value.
- Adjustment. Apply the ratio to the portion of the contract price tied to cold rolled steel sheet, not necessarily the whole contract.
Take a clause with a $260,000 scope tied to cold rolled steel sheet, a base index of 320.0, and a current index of 368.0. The ratio is 1.15, a 15% increase, so $39,000 is added to that scope.
Where clauses go wrong
The most common mistake is not naming a series code. "The cold rolled steel sheet index" is not a series. BLS publishes more than one cold rolled steel sheet-related series, so name the exact code, WPU101707, in the contract text.
Clauses also skip the averaging window. A single month's value swings more than a 3-month rolling average, so the clause should say which one applies. Publication lag gets left out the same way: BLS releases data on a delay and revises early figures, so the clause should say whether the preliminary or final value governs.
The last common gap is no cap or floor. With no cap, an index spike passes through in full, which can make a large adjustment commercially unworkable.
Related
- Escalation clause analyzer: paste a clause and see the formula, undefined terms, and risk score.
- How escalation clause base periods work
- Price adjustment caps and floors