Used Autoclaves for Sale

Buying Guide: Used Autoclaves for Composite Manufacturing

Expert guidance for aerospace equipment buyers. 4 listings currently available.

What to Look For When Buying Used

The critical systems to evaluate on any used autoclave are the pressure vessel, temperature uniformity, and control system. Pressure vessel inspection: Request the most recent ASME vessel inspection report — most jurisdictions require annual inspection for vessels operating above 15 PSI. Any vessel with deferred maintenance items or approaching its retest interval should be priced accordingly. Temperature uniformity: Ask for the temperature uniformity survey (TUS) results from the last 12 months showing temperature variation across the work zone. Aerospace processes typically require ±5°F uniformity — tighter than industrial standards. Expired TUS means you'll need to commission a new survey ($5,000–$12,000) before production use. Control system: Older Watlow or Eurotherm PID controllers are functional but may lack data logging for AS9100 traceability. A modern data acquisition system adds $15,000–$40,000 but is often required for aerospace customer qualification.

Price Ranges by Condition and Age

Autoclave pricing scales sharply with vessel diameter and length — the dominant cost drivers: Small autoclaves (< 4 ft diameter, < 8 ft long): $30,000–$125,000 for units in good condition with valid pressure vessel certification. Used for prototype and development work. Mid-size autoclaves (4–8 ft diameter, 10–20 ft long): $150,000–$450,000 for production-capable units with full documentation. Most common in Tier 2 composite shops. Large production autoclaves (> 8 ft diameter, 20–40 ft long): $400,000–$1,200,000 depending on pressure rating and certification history. ASC and Thermal Equipment Corporation units in this range retain strong resale value. Full NADCAP compliance documentation adds 15–25% to asking price versus identical equipment without documentation. Relocation and reinstallation typically adds $40,000–$150,000 depending on vessel size — a cost buyers frequently underestimate.

Top Manufacturers and Why They Matter

ASC Process Systems (USA) is the dominant builder of aerospace composite autoclaves — their systems are installed at Boeing, Northrop Grumman, and Lockheed Martin facilities globally. ASC maintains an active service organization and parts supply chain for all legacy systems. Thermal Equipment Corporation (TEC) builds robust autoclaves favored for high-pressure aerospace production and maintains comparable service support. Aerojet Rocketdyne and Spirit AeroSystems plant closures periodically release ASC and TEC units onto the used market — these represent the highest-pedigree used equipment available. For AS9100 and NADCAP-qualified composite operations, documented equipment history from a named aerospace OEM facility reduces the incoming qualification cycle from 6–12 months to 60–90 days in most cases. Independent or unknown-origin autoclaves require full re-qualification regardless of physical condition.

Common Applications in Aerospace Manufacturing

Aerospace autoclaves cure carbon fiber and glass fiber composite structures that define modern aircraft design: Primary structure — fuselage skins, wing panels, empennage skins for commercial aircraft. These applications require the largest autoclaves and most rigorous NADCAP compliance. Secondary structure — access doors, fairings, nacelle components, and interior structural panels. Engine nacelles — complex double-curvature composite shells requiring precise cure cycle control for dimensional stability. Rotor blades — helicopter and wind energy composite blade curing in specialized horizontal autoclaves. Defense composites — UAV airframes, radome structures, and armored vehicle composite panels. The shift toward more composite content in next-generation aircraft (787, A350, F-35 successors) drives sustained demand for qualified autoclave capacity at every tier of the supply chain.

Why Buying Used Makes Sense

New production aerospace autoclaves cost $500,000–$4,000,000 depending on size and specification, with 18–30 month build lead times. A used autoclave from a qualified aerospace facility is available in 4–12 weeks and costs 40–70% less. The aerospace composite industry's installed base is aging — older autoclaves are being replaced by newer systems at Tier 1 facilities while still in prime operating condition. This generates a steady supply of high-quality used equipment with complete process histories. The NADCAP documentation that transfers with an aerospace-heritage autoclave is itself a significant asset — the qualification work representing hundreds of hours of engineering effort is embedded in the paperwork package. For shops entering the aerospace composite market, buying a documented autoclave from a certified facility is substantially faster than new equipment plus independent qualification from scratch.