Hertwig GmbH, based in Luedenscheid (HRB 7706), performs hardening of materials of all kinds and provides full service from the initial discussion to the return transport of workpieces. The company operates nearly all market-established hardening procedures and makes tooling and mechanical engineering parts more durable and wear-resistant. Hertwig has expanded its service capability through technical consulting, pickup and delivery of workpieces, and individual preparation of the hardening process. The management consists of Beate and Thomas Hertwig and the average number of employees in 2024 was 116. Hertwig GmbH is a family business.
Das Härten von Werkstoffen aller Art sowie die Ausführung aller damit im Zusammenhang stehenden Geschäfte.
Converted using the official Destatis and Eurostat correspondence tables; ISIC Rev. 4 is the United Nations' international industry classification.
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Source: German Commercial Register (Handelsregister) Iserlohn Local Court, HRB 7706 (as of 31 October 2026)
| Name | Type | City |
|---|---|---|
| Beate Hertwig | Geschäftsführer(in) | Lüdenscheid |
| Thomas Hertwig | Geschäftsführer(in) | Lüdenscheid |
Source: German Commercial Register (Handelsregister) Iserlohn Local Court, HRB 7706 (as of 31 October 2026)
| Year | Revenue | Profit | Balance | Employees |
|---|---|---|---|---|
| 2024 | Rohergebnis€10.3M2 | €129,309 | €12,621,724 | — |
| 2023 | Rohergebnis€10.8M2 | €144,297 | €12,678,672 | — |
| 2022 | Rohergebnis€12.5M2 | €1,576,535 | €12,412,477 | — |
| 2021 | Rohergebnis€11.1M2 | €1,184,669 | €12,181,103 | — |
| 2020 | Rohergebnis€9.2M2 | €744,050 | €12,206,716 | — |
| 2019 | Rohergebnis€10M2 | €743,512 | €12,567,277 | — |
| 2018 | Rohergebnis€10.5M2 | €1,286,013 | €11,494,653 | — |
| 2017 | Rohergebnis€9.9M2 | €1,060,202 | €11,333,209 | — |
| 2016 | Rohergebnis€10M2 | €975,097 | €11,515,147 | — |
| 2015 | Rohergebnis€9.5M2 | €1,409,248 | €11,475,976 | — |
1 Small companies are not required to publish a profit-and-loss statement (§ 326 (1) HGB). The figure shown is the statutory ceiling under § 267 HGB where the balance-sheet total makes it binding — a company may exceed at most one of the three size criteria.
2 Rohergebnis nach § 276 HGB: Umsatzerlöse abzüglich Materialaufwand bzw. Herstellungskosten. Kleine und mittelgroße Kapitalgesellschaften dürfen diese Posten zusammenfassen; die Umsatzerlöse selbst sind dann nicht veröffentlicht und liegen über dem Rohergebnis.
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Source: German Commercial Register (Handelsregister) Iserlohn Local Court, HRB 7706 (as of 31 October 2026)
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| Cost type | Amount | Share |
|---|---|---|
| Personnel Costs | €6,458,666 | 82.8% |
| Depreciation | €1,295,386 | 16.6% |
| Interest & Similar | €48,851 | 0.6% |
