{ "source": "Cooked Index — occupational AI risk register", "page": "https://cookedindex.com/jobs/heat-treating-equipment-setters-operators-and-tenders-metal-and-plastic/", "methodology": "https://cookedindex.com/methodology", "notice": "Verdicts are re-examined as evidence accumulates. Re-fetch before relying on this; the page above always carries the current score.", "scored_at": "2026-08-11", "model": "claude-opus-5", "occupation": { "title": "Heat Treating Equipment Setters, Operators, and Tenders, Metal and Plastic", "soc_code": "51-4191", "category": "Production", "us_employment": 14000, "median_annual_wage": 48750 }, "verdict": "EXPOSED", "risk_resistance": 36, "contested": false, "near_boundary": false, "dimensions": { "task_resistance": 10, "embodiment": 14, "liability_shield": 2, "trust_premium": 3, "judgment_accountability": 7 }, "reasoning": { "task_resistance": "Recipe entry, ramp-soak-quench cycles and hardness data logging are already handled by PLCs and AMS 2750 pyrometry systems that hold uniformity tighter than any operator's judgment, but the physical half — racking gears, hanging shafts, moving baskets from furnace to quench tank before the part cools out of range, clearing a jam in a mesh belt — is what puts this at 10 instead of the 4 a pure control-panel job would score.", "embodiment": "You work within feet of a 1700°F furnace door in leathers and a face shield, manhandle fixtures and hot baskets with tongs or a hoist, deal with quench oil fumes and salt bath splash, and chase temperature drift by physically checking thermocouples and burner tuning — uncontrolled enough to earn 14, but it's still a fixed shop floor with fixed equipment rather than a 17-18 field environment.", "liability_shield": "No state licence gates this work; the certification that matters — Nadcap or AS9100 heat treat approval, AMS 2750 pyrometry compliance — attaches to the plant and its quality department, not to your name, and when a batch fails hardness testing the customer pursues the shop, so 2 rather than 0 only reflects the signed process charts you initial.", "trust_premium": "The parts leave with a certification packet and a hardness reading, not your name; a purchasing agent picks a heat treat vendor on Nadcap status, turnaround and price, and would not know whether you or the second-shift operator ran the load — the 3 is for the shop-floor relationship with your own engineers and inspectors, not with any customer.", "judgment_accountability": "The spec sheet dictates temperature, soak time and quench medium, and deviations need engineering sign-off, so most shifts are procedure-following; the 7 covers the calls that are genuinely yours — deciding a furnace isn't holding uniformity and stopping production, judging whether warped stock is salvageable by straightening, adjusting for load density or a part that came in with unexpected prior condition." }, "rationale": "The core loop — read the spec, set furnace temperature and cycle time, load and unload baskets, quench, test hardness, log the chart — is half physical handling and half parameter work that PLCs, recipe management software and closed-loop pyrometry already do better than a human eye. Loading heavy fixtures, hanging parts, breaking up jams, straightening warped stock and troubleshooting a furnace that isn't holding uniformity still needs a body on a hot shop floor, which is the main thing holding this job in place. The bigger threat isn't a language model, it's capital investment in automated batch lines and the long-run decline in domestic heat treat headcount.", "outlook": "Headcount keeps shrinking as job shops consolidate and buy automated batch lines, and the surviving roles look less like furnace tender and more like pyrometry-certified maintenance and process tech.", "what_would_raise_it": { "levers": [ { "dimension": "liability_shield", "change": "AMS2750 (aerospace pyrometry) and CQI-9 (AIAG automotive heat treat assessment) already require named, qualified personnel to sign off on TUS/SAT surveys, instrument calibration and load charts. If Nadcap audit criteria or a customer flowdown were tightened to require a certified heat treat operator — not just a metallurgist or quality engineer — to personally attest each production load's chart and any recipe deviation, the shop-floor role acquires a signature that cannot be delegated to the PLC. Watch AMS2750 revisions and Nadcap HT task-group checklists for operator-level certification language.", "plausibility": "plausible", "would_add": 5 }, { "dimension": "judgment_accountability", "change": "Task-mix shift plus deviation authority: on lines where recipe execution is fully closed-loop, the human's remaining calls are the ambiguous ones — accept/scrap a load that drifted out of uniformity, decide whether warpage is straightenable or the batch is condemned, stop the furnace on a suspect thermocouple. If a quality system (CQI-9 or an internal MRB procedure) names the operator as the person who owns the disposition and the nonconformance record rather than routing it to engineering, this rises.", "plausibility": "plausible", "would_add": 4 }, { "dimension": "task_resistance", "change": "Genuine two-tier structure: the routine tier (set temp, start cycle, log chart) is the part PLCs and recipe management already absorb; the residual tier is furnace troubleshooting — chasing uniformity failures, burner and atmosphere problems, fixture and jam recovery, diagnosing why a specific alloy came out soft. If headcount consolidates so remaining operators are effectively furnace troubleshooters covering multiple automated lines, the measured day's work becomes harder to automate even with no capability regression.", "plausibility": "already happening", "would_add": 3 }, { "dimension": "embodiment", "change": "Unpredictable-environment content rises if work shifts toward larger, non-repeating loads — big forgings, mixed job-shop lots, induction and flame hardening of oddly shaped parts — where fixturing is bespoke and no automated basket handler pays back. Reshoring of low-volume defense and aerospace forging work would push this direction; high-volume captive automotive lines push the other way.", "plausibility": "plausible", "would_add": 2 } ], "ceiling_note": "No realistic trust-premium route: buyers purchase a hardness spec and a certified chart, and would happily accept a lights-out furnace that meets it. Also note the dominant threat here is capital replacement of the whole line rather than task-level AI, so gains in liability_shield and judgment_accountability protect the role only in shops that survive the consolidation at all — 14,000 workers and shrinking." }, "adjudication": null, "employment_history": { "points": [ { "y": 2017, "emp": 19340, "wage": 37300 }, { "y": 2018, "emp": 19690, "wage": 37520 }, { "y": 2019, "emp": 19560, "wage": 38250 }, { "y": 2020, "emp": 16550, "wage": 39530 }, { "y": 2021, "emp": 14540, "wage": 38450 }, { "y": 2022, "emp": 15600, "wage": 40900 }, { "y": 2023, "emp": 14950, "wage": 44240 }, { "y": 2024, "emp": 14590, "wage": 47450 }, { "y": 2025, "emp": 14000, "wage": 48750 } ], "from": 2017, "to": 2025, "change_pct": -27.6, "comparable_from": 2019, "spans_soc_revision": true }, "pivots": [ { "slug": "refractory-materials-repairers-except-brickmasons", "title": "Refractory Materials Repairers, Except Brickmasons", "verdict": "EXPOSED", "risk_resistance": 65, "median_wage": 61290, "overlap": 80, "skills_to_close": [ "Technology Design" ] }, { "slug": "industrial-machinery-mechanics", "title": "Industrial Machinery Mechanics", "verdict": "SAFE", "risk_resistance": 67, "median_wage": 64520, "overlap": 75, "skills_to_close": [ "Installation", "Repairing", "Troubleshooting", "Equipment Maintenance" ] }, { "slug": "furniture-finishers", "title": "Furniture Finishers", "verdict": "EXPOSED", "risk_resistance": 52, "median_wage": 44540, "overlap": 74, "skills_to_close": [ "Service Orientation", "Persuasion", "Technology Design" ] } ], "license": "https://cookedindex.com/terms" }