Steel wire mill in Hemer: rope wire, spring steel wire and iron wire from Ø 0.2–13.2 mm to international standards
H. Künne GmbH & Co. KG Stahldrahtwerk Hemer
58675 Hemer (Am Heßufer 27 · Hauptstraße 101)New on Amplifa
About the Künne Steel Wire Mill
H. Künne GmbH & Co. KG is a steel wire mill based in Hemer, in the South Westphalian wire-drawing centre of Hemer-Altena. The company produces high-carbon steel wires with diameters of 0.2 to 10.0 mm as well as low-carbon steel wires from 1.5 to 13.2 mm. The product portfolio includes rope wire to EN 10264-2 and DIN 2078, spring steel wire to DIN EN 10270-1 and DIN 17223/1, as well as cold-heading wire, iron wire in round and profile sections, chain grades and special steel wire to customer specifications. Production encompasses wire drawing, heat treatment before, after or between cold forming operations, and surface finishing such as copper plating. Customer industries include, among others, the wire rope, spring, chain and architectural trades, cold-heading technology, the screening and steel grit industries, and fibre-optic cable manufacturing. The plant is part of the KÜNNE Group, which consists mainly of companies producing quality wire.
- Site
- Hemer
- Processes
- Wire drawing, Cold-heading wire production, Spring steel wire production (DIN EN 10270-1, DIN 17223/1), Rope wire production (EN 10264-2, DIN 2078), Heat treatment of wire (before, after or between cold forming operations), Copper plating of wire (surface finishing), Packaging and finishing (crown spools, bobbins, rings, coils), Production-accompanying quality control
- Materials
- High-carbon steel grades (rope wire, spring steel wire), Low-carbon steel grades (iron wire, cold-heading wire, chain grades), Spring steel wire to DIN EN 10270-1 (SL/SM/SH/DM/DH), Spring steel wire to DIN 17223/1 (class A, B, C, D), Rope wire to EN 10264-2, Rope wire to DIN 2078, D6-2, D8-2
- Certificates
- DIN EN ISO 9001:2015, DIN EN ISO 50001:2018, ISO 9001, ISO 50001
- Industries
- Wire rope industry, Spring industry, Architectural trade, Fibre-optic cables, Cold-heading technology, Chain industry
- 01
Wire drawing
- 02
Heat treatment of the wire
- 03
Surface finishing (e.g. copper plating)
- 04
Finishing and packaging
- 05
Production-accompanying quality control
Materials and Processes
Rope wire (high-carbon steel)
High-carbon rope wire Ø 0.2–5.25 mm in strength classes 1180–2160 N/mm² for the wire rope industry.
Spring steel wire (SL/SM/SH/DM/DH)
High-carbon spring steel wire Ø 0.2–10.0 mm with phosphated and zinc-coated surfaces, round.
Spring steel wire (classes A–D)
Patented spring steel wire of classes A to D, Ø 0.2–10.0 mm, for technical springs.
Iron wire (D6-2, D8-2, C8D, D9, S235JR, S355JR)
Low-carbon iron wire, round and profile, Ø 1.5–13.2 mm, drawn from non-heat-treated wire rod.
Cold-heading wire (RST 36-2, RQST 36-2, C4C, C10C, 19MnB4)
Heading grades Ø 1.5–11.7 mm for cold-heading technology, also available copper-finished.
Chain grades (15Mn3, 21Mn5)
Chain grades Ø 1.5–13.2 mm for the chain industry.
Locations
Hemer
DESteel wire mill / headquarters
- Materials
- High- and low-carbon steel grades, rope wire, spring steel wire, iron wire, cold-heading wire
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Wire drawingForming | – | – | – | – | Steel wire (high-carbon, Ø 0.2–10.0 mm), low-carbon steel grades (Ø 1.5–13.0 mm) |
| Cold-heading wire productionForming | – | – | – | – | Cold-heading wire (low-carbon steel grades Ø 1.5–13.0 mm), RST 36-2, RQST 36-2, C4C/QST 32-3, C10C/QST 36-3, 19MnB4 |
| Spring steel wire production (DIN EN 10270-1, DIN 17223/1)Forming | – | – | – | – | Spring steel wire grades SL, SM, SH, DM, DH (ph/Z/rd) |
| Rope wire production (EN 10264-2, DIN 2078)Forming | – | – | – | – | Rope wire strength classes 1180–2160 N/mm², Ø 0.2–5.25 mm |
| Heat treatment of wire (before, after or between cold forming operations)Heat treatment | – | – | – | – | non-heat-treated wire rod (iron wire) |
| Copper plating of wire (surface finishing)Surface | – | – | – | – | Iron wire Ø 1.50–6.00 mm |
| Packaging and finishing (crown spools, bobbins, rings, coils)Assembly | – | – | – | – | Steel wire |
| Production-accompanying quality controlTesting | – | – | – | – | Steel wire |
Additional services
Quality and Certificates
Production is secured by production-accompanying quality controls and a continuous improvement process. Certified to DIN EN ISO 9001:2015 and DIN EN ISO 50001:2018.
| Evidence | Hemer |
|---|---|
| ISO 9001 | |
| ISO 50001 |