Extruded Profiles and Rolled Products technology and investment research

Function

Aluminum extrusions, titanium plate and sheet, and specialty steel rolled products for aerospace structural, defense, and industrial applications. Aluminum extrusions produce complex cross-sectional shapes (stringers, frames, seat tracks) with excellent surface finish and dimensional accuracy. Titanium rolled plate (up to several inches thick) forms wing attachment fittings, bulkheads, and armor plate. Specialty steel rolled products (maraging steels, PH stainless) serve landing gear and structural applications. These mill products are the intermediate forms between alloy ingots and finished machined components — every airframe and rocket structure depends on them.

Why it's a bottleneck

Large extrusion press capacity is the primary physical constraint: presses above 15,000 tons are rare and costly (the largest US press is the 50,000-ton Alcoa/Howmet legacy press), and no new US presses of this scale have been built in decades. Gauge control for thin-gauge titanium sheet (below 1 mm) requires multi-pass cold rolling with intermediate vacuum annealing — each pass reduces thickness by 10-20%, and maintaining uniform thickness across a 2-meter-wide sheet at sub-millimeter tolerances is a process control challenge that few mills worldwide have mastered. Aerospace mill qualification (AMS specifications) requires each production lot to pass destructive testing (tensile, fatigue, fracture toughness), and a new mill source typically takes 2-3 years to qualify for a single alloy specification. Kaiser Aluminum's Trentwood (Washington) rolling mill is one of the few US facilities capable of producing aerospace-grade aluminum plate at scale.

Key companies

• KALU (Kaiser Aluminum) — Leading US producer of aerospace aluminum plate, sheet, and extrusions; Q2 FY2026 record revenue $1.26B with aerospace recovery and packaging mix shift; raised FY2026 guidance multiple times with +20-30% adj. EBITDA growth.
• ATI (ATI Inc.) — Produces titanium rolled plate, sheet, and strip for aerospace airframes, landing gear, and defense applications; vertically integrated from melt to mill product.
• HWM (Howmet Aerospace) — Legacy of large aluminum/titanium forging and extrusion capability from Alcoa heritage; titanium structural components and aluminum extrusions for aerospace.

Open questions

• [ ] How many aerospace-qualified aluminum rolling mills exist in the US, and what are their effective capacities (tonnes/year)?
• [ ] Verify Kaiser's aerospace revenue as percentage of total (vs. packaging and automotive) from most recent 10-Q
• [ ] Quantify titanium plate lead times — are they expanding like single-crystal blade lead times, or is there more capacity?
• [ ] What is the state of large extrusion press capacity globally — is India's new 10,000-ton press and similar international builds changing the landscape?