Wide landscape frame of a rolling mill stand: a glowing orange bar sweeps from the lower left across a steel runout tabl.

An STS Metals Company

TSI Titanium

Quality titanium bar solutions for aerospace, medical, and commercial applications.

Derry, Pennsylvania

1975
Setting the standard since
1,500-ton
Open die forging press
16.5"
Max forged bar diameter
10–16
Week lead times, industry best
Glowing orange titanium bar exiting grooved mill rolls as a gloved operator guides it onto a yellow runout table.
TSI Titanium logo

Half a century of titanium bar

TSI Titanium has been a highly respected supplier of titanium rolled and forged products since 1975. For more than half a century, the mill in Derry, Pennsylvania has set the standard in quality titanium bar solutions, serving aerospace, medical, and commercial markets with uncompromising performance.

Across a manufacturing footprint of over 125,000 square feet, TSI forges, rolls, conditions, heat treats, peels, polishes, cuts and finishes specialty grades of titanium. The operation is laser focused on reliable supply and industry leading product availability, with customization of product sizes and quantities down to single-bar requirements.

Inside STS Metals, TSI Titanium is the group's round bar backbone: an open die press and a hand mill for round bar, Nadcap accredited heat treating and non-destructive testing, and approvals with Boeing, Northrop Grumman, Collins, and Lockheed Martin. Lead times run 10 to 16 weeks, industry best, and TSI can convert obsolete raw material.

From the STS Metals film

See TSI Titanium at work

Opens on the TSI Titanium segment at 1:47, inside the full film.

In-house, under one roof

From ingot to finished bar

We forge, roll, condition, heat treat, peel, polish, cut and finish specialty grades of titanium materials.

Bright bar running diagonally through green and yellow finishing line rollers on the mill floor.

1,500-ton forging press

Hydraulic open die forging of customizable bar products, with capability for multiple-heat quantities down to single-bar requirements. Forged round bar to 16.500" diameter.

Multi-functional bar mill

Three 12" and six 10" mill stands provide three-high combination rolling for all titanium grades, 0.500" to 4.00" diameter.

Nadcap heat treating

Car and drop-bottom furnaces produce Annealed, Solution Treated and Aged, or Duplex Annealed titanium bar. Nadcap certified aerospace heat treating.

Four modern bar peelers

Finish bar product from 0.500" to 17" diameter with industry best roundness, surface quality, and straightness.

Ultrasonic inspection

In-house ultrasonic inspection, Nadcap accredited for Aerospace Non-Destructive Testing.

Finishing and conversion

Bar straightening, peeling and polishing, grinding, and cutting, plus conversion services. We can convert obsolete raw material.

From the 2026 line card

Materials & products

Titanium

6-46-4 ELI6-6-26-2-4-210-2-3CP Grades
Close-up of a bundle of bright round titanium bar with freshly cut ends facing forward on a blue surface.
Product formsHot-rolled round barForged round barHot-rolled rectangle bar

Hot-rolled round bar: .500" to 4.00" diameter (12.7mm to 101.6mm), 12' R/L

Forged round bar: 4.00" to 16.500" diameter (101.6mm to 419.1mm), 12' R/L

Sparks burst across a forge bay as a yellow manipulator arm works a heated billet on a blue press table.

Customer-focused titanium bar applications engineered for performance.

Quality & approvals

ISO 9001:2015 + AS9100D certified companyNadcap accredited: Aerospace Heat TreatingNadcap accredited: Aerospace Non-Destructive TestingApproved by Boeing, Northrop Grumman, Collins, and Lockheed Martin

Industries served

AerospaceMedicalDefenseSpaceNavyIndustrialCommercial

Visit us

Derry, Pennsylvania

Current standalone site

The rest of the family

Sierra Alloys→Sierra Sheet & Plate→Forged Products→Brown Pacific→Brown Europe→← All companies

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