
When Steel and Copper Prices Move After You Bid: A Contractor's Guide to Estimates and Change Orders That Hold
Steel mill products are up roughly 21 percent and copper products 16–25 percent year over year after the April 2026 Section 232 tariff restructuring set a 50 percent duty on metal-heavy goods. This guide shows contractors how to break out metals as dated line items, tie escalation clauses to a published BLS index with clear thresholds and proof requirements, and run monthly job-cost reviews so price spikes become approved change orders instead of lost margin.










