March 31, 2024

September 30, 2023

Gross
Carrying
Value

Accumulated
Amortization

Net
Carrying
Amount

Gross
Carrying
Value

Accumulated
Amortization

Net
Carrying
Amount

Intangible assets with finite lives:

Customer relationships and contracts:

Aerospace

$

281,683

$

(241,513

)

$

40,170

$

281,683

$

(236,143

)

$

45,540

Industrial

386,267

(101,363

)

284,904

378,804

(90,084

)

288,720

Total

$

667,950

$

(342,876

)

$

325,074

$

660,487

$

(326,227

)

$

334,260

Intellectual property:

Aerospace

$

—

$

—

$

—

$

—

$

—

$

—

Industrial

3,139

(3,139

)

—

3,139

(3,139

)

—

Total

$

3,139

$

(3,139

)

$

—

$

3,139

$

(3,139

)

$

—

Process technology:

Aerospace

$

44,570

$

(40,026

)

$

4,544

$

44,570

$

(39,551

)

$

5,019

Industrial

84,877

(33,676

)

51,201

83,456

(31,709

)

51,747

Total

$

129,447

$

(73,702

)

$

55,745

$

128,026

$

(71,260

)

$

56,766

Other intangibles:

Aerospace

$

—

$

—

$

—

$

—

$

—

$

—

Industrial

561

(561

)

—

554

(524

)

30

Total

$

561

$

(561

)

$

—

$

554

$

(524

)

$

30

Intangible asset with indefinite life:

Trade name:

Aerospace

$

—

$

—

$

—

$

—

$

—

$

—

Industrial

62,595

—

62,595

61,307

—

61,307

Total

$

62,595

$

—

$

62,595

$

61,307

$

—

$

61,307

Total intangibles:

Aerospace

$

326,253

$

(281,539

)

$

44,714

$

326,253

$

(275,694

)

$

50,559

Industrial

537,439

(138,739

)

398,700

527,260

(125,456

)

401,804

Consolidated Total

$

863,692

$

(420,278

)

$

443,414

$

853,513

$

(401,150

)

$

452,363