Heat Treatment
Engineered,
Not Applied.

Custom ramp rates calculated per alloy composition, wall thickness, and joint restraint. P91 chrome-moly demands no faster than 10°F/hr below 600°F. We follow the metallurgy, not a generic chart.

Six to twelve thermocouples distributed across weld zones, heat-affected zones, and base metal. The recorder won't advance to soak until every TC reads within ±10°F of setpoint — no exceptions.

Time at temperature is where metallurgy happens. Hydrogen diffusion, residual stress relief, grain normalization — all require sustained, verified heat. Our recorder logs every TC every 30 seconds.

Uncontrolled cooling causes thermal shock and re-introduces residual stress. We program cool rates not to exceed 15°F/hr through the critical 1,400°F–900°F range, with insulation schedule managed minute by minute.

Every time-temperature record, TC calibration certificate, deviation log, and code compliance checklist uploaded to your client portal before the furnace reaches ambient. NADCAP auditors have asked for our documentation as a reference standard.