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ATI Specialty Materials · Aerospace · Defense · Specialty alloys · Thesis updated August 11, 2026

Aerospace pricing power drives record segment margins

01 Running thesis

Scarcity value creates structural pricing power

ATI is proving that its shift toward aerospace and defense is permanent. In the second quarter of 2026, the Advanced Alloys and Solutions segment achieved a record 23.7% margin. Aerospace and defense now accounts for roughly 44% of that segment's revenue, which is more than double its share from five years ago.

The bull case focuses on scarcity and execution. ATI is one of the few qualified Western producers of high-purity hafnium and zirconium. Because China is limiting exports of these materials, ATI has significant pricing power. A renewed $1 billion naval nuclear contract proves this point, with two thirds of the value increase coming from better pricing and product mix.

The bear case centers on factory execution and working capital. The High Performance Materials and Components segment recently missed some shipment targets because of qualification delays at new facilities. ATI has to show it can catch up on these deliveries in the second half of 2026. Furthermore, lead times for premium titanium have stretched to 20 months, which could strain customer working capital heading into 2027.

Aug 2026Q2 2026 earnings confirmed strong pricing power, with AA&S segment margins hitting a record 23.7%. Management also noted shipment delays in the HPMC segment due to facility qualification timing.
Apr 2026Q1 2026 strengthened the thesis. Free cash flow improved by $218 million year over year, adjusted EBITDA margin reached 20.1%, and ATI renewed a 5-year, $1 billion naval nuclear contract.
Apr 2026The Q1 2026 10-Q also showed the tradeoff. Aerospace and defense rose to 69% of sales, but managed working capital increased to 34.8% of annualized sales from 32.5% at year-end.
Feb 2026The 2025 10-K showed aerospace and defense at 68% of sales, up from 62% in 2024. HPMC and AA&S margins also expanded for the full year.
Oct 2025Q3 2025 showed strong aerospace mix and better segment margins, but working capital rose to 36.4% of sales. A magistrate judge recommendation reduced the pension litigation risk.
Jul 2025Q2 2025 raised cash conversion concerns as managed working capital increased to 36.5% of sales. AA&S margins also fell year over year.
May 2025Q1 2025 confirmed aerospace and defense strength, with that market at 66% of sales. The same filing brought back the working capital worry as the metric rose to 35.9% of sales.
Feb 2025The 2024 10-K showed aerospace and defense at 62% of sales and managed working capital steady at 30.9% of sales. AA&S margin improvement supported the margin story.
02 Business model

Hard metals for hard jobs

ATI makes specialty materials and complex parts that go into places where normal metals fail. Customers use these products in jet engines, airframes, naval nuclear systems, energy equipment, and medical devices. They pay a premium for metals that can survive intense heat, extreme stress, and harsh corrosion.

The company earns money by selling alloys, forgings, castings, and finished components. Its main advantage is materials science. ATI knows how to mix metal recipes and form shapes that are very difficult for competitors to copy. A key structural moat is its status as one of only three qualified Western producers of high-purity hafnium and zirconium.

This model creates excellent cash flow when aerospace and defense demand is strong. Higher factory utilization and a richer product mix lift margins. The model struggles when customers cut aircraft builds, defense budgets shrink, or new manufacturing equipment takes too long to qualify.

03 Product portfolio

The metal mix

Growth engine

Nickel-based alloys and specialty alloys

These alloys are essential for high-heat aerospace and defense uses, especially inside modern jet engines.

Growth engine

Precision forgings, castings and components

These are highly engineered shaped parts that go into demanding aircraft, defense, and energy systems.

Steady

Titanium and titanium-based alloys

Titanium is valued for incredible strength and low weight. It is widely used in airframes and other weight-sensitive aerospace parts.

Steady

Zirconium and related alloys

These materials are used in specialized energy and nuclear settings where extreme corrosion resistance is required.

Cash cow

Precision rolled strip products

These products serve narrower industrial uses and are less central to the current aerospace and defense growth story.

04 Business segments

Two segments, one main cycle

High Performance Materials & Components53%modest
Advanced Alloys & Solutions47%flat

The segment mix is based on recent corporate disclosures. High Performance Materials and Components is highly concentrated in aerospace and defense, while Advanced Alloys and Solutions has grown its aerospace and defense share to approximately 44%.

05 Risk factors

What could break the thesis

Aerospace and defense concentration

High impact · Medium odds

The company depends heavily on the aerospace and defense cycle. If jet engine, airframe, or defense demand slows, ATI has fewer non-core markets to offset the hit.

We watchAerospace and defense sales mix, jet engine demand, and total backlog.

Facility qualification delays

High impact · Medium odds

ATI is dealing with qualification delays at its new Mexico facility and its new EB2 titanium furnace. These delays pushed some shipments out of Q2 2026. The company must prove it can convert these deferred shipments into revenue in the second half of the year.

We watchRevenue conversion in the HPMC segment and updates on Mexico and EB2 facility ramps.

Trade limits and supply chains

Medium impact · Medium odds

ATI uses specialized metals, and its cost base can move with raw material prices. China is currently limiting exports of critical materials like hafnium and zirconium. While ATI benefits from this scarcity today, broader trade wars or supply disruptions could hurt the wider aerospace supply chain.

We watchChinese export rules for critical minerals and global titanium prices.

Pension litigation overhang

Medium impact · Low odds

Two lawsuits were filed in August 2024 about a pension obligation transfer. In August 2025, a magistrate judge recommended dismissing all plaintiff claims. That is a positive step, but the presiding judge still has to issue a final decision.

We watchFinal court action on the pension transfer lawsuits.
06 Quick answers

In one breath

What does ATI Inc. make?

ATI makes specialty metals and engineered parts. Its products include nickel alloys, titanium alloys, zirconium alloys, forgings, castings, and rolled strip products.

Why is aerospace so important to ATI?

Aerospace and defense markets demand high-performance materials. This gives ATI strong pricing power, which supports higher margins when demand is strong.

What changed in ATI's latest quarter?

In Q2 2026, the company reported a record 23.7% margin in its Advanced Alloys and Solutions segment. It also confirmed that a renewed $1 billion naval nuclear contract is driven mostly by higher pricing.

What is the main risk for ATI stock?

The main risk is execution at new facilities. The company recently saw shipment delays because of qualification timing at a new plant in Mexico and a new titanium furnace.

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