June 30, 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

$

(243,833

)

$

37,850

$

281,683

$

(236,143

)

$

45,540

Industrial

383,518

(105,532

)

277,986

378,804

(90,084

)

288,720

Total

$

665,201

$

(349,365

)

$

315,836

$

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

$

(40,185

)

$

4,385

$

44,570

$

(39,551

)

$

5,019

Industrial

84,354

(34,343

)

50,011

83,456

(31,709

)

51,747

Total

$

128,924

$

(74,528

)

$

54,396

$

128,026

$

(71,260

)

$

56,766

Other intangibles:

Aerospace

$

—

$

—

$

—

$

—

$

—

$

—

Industrial

559

(559

)

—

554

(524

)

30

Total

$

559

$

(559

)

$

—

$

554

$

(524

)

$

30

Intangible asset with indefinite life:

Trade name:

Aerospace

$

—

$

—

$

—

$

—

$

—

$

—

Industrial

62,120

—

62,120

61,307

—

61,307

Total

$

62,120

$

—

$

62,120

$

61,307

$

—

$

61,307

Total intangibles:

Aerospace

$

326,253

$

(284,018

)

$

42,235

$

326,253

$

(275,694

)

$

50,559

Industrial

533,690

(143,573

)

390,117

527,260

(125,456

)

401,804

Consolidated Total

$

859,943

$

(427,591

)

$

432,352

$

853,513

$

(401,150

)

$

452,363