Product Overview
Introducing our premium M42-Cut Ready High-Speed Steel Wire, engineered for precision cutting tool manufacturers and high-performance wire-drawing operations. This 3.2mm Ø coil (50kg net weight) is made from AISI M42 — a premium cobalt-enhanced high-speed steel containing 8% cobalt — delivering exceptional hot hardness, wear resistance, and thermal stability. Fully solution annealed for optimal machinability and uniform microstructure, the wire meets strict ROHS compliance standards, ensuring environmental safety and global market readiness. As a ready-to-cut grade, it eliminates pre-conditioning steps, reducing lead time and processing costs for downstream toolmakers — making it an ideal choice for demanding applications where consistency and performance are non-negotiable.
Key Features
- Pre-processed M42-Cut Ready condition: no additional annealing or stress-relieving required before machining or grinding
- High cobalt content (8%) for superior red hardness up to 650°C and extended tool life
- Consistent 3.2mm diameter with tight tolerance (±0.02mm) and excellent roundness
- ROHS compliant — fully traceable material certification available upon request
- Uniform solution-annealed microstructure ensures predictable grinding, EDM, and turning behavior
- Optimized surface finish for reduced die wear during wire drawing or cold forming
Technical Specifications
| Parameter |
Value |
| Grade |
AISI M42 (UNS T11342) |
| Cobalt Content |
7.75–8.25 wt% |
| Diameter |
3.2 mm ±0.02 mm |
| Coil Weight |
50 kg (net) |
| Condition |
Solution Annealed (softened, HB 220–260) |
| Surface Finish |
Drawn & Pickled, Smooth Matte |
| Tensile Strength |
950–1100 MPa |
| Elongation (A5) |
≥12% |
| Hardness (as-supplied) |
220–260 HB |
| ROHS Compliance |
Yes (EU Directive 2011/65/EU) |
| Packaging |
Wooden spool, vacuum-sealed plastic wrap, desiccant included |
| Traceability |
Heat number laser-marked on spool + full mill test report |
Applications
This cobalt HSS wire is widely used in the production of high-precision rotating cutting tools including end mills, drills, taps, and reamers. It serves as critical feedstock for manufacturers of solid carbide-tipped tools, micro-drills, and aerospace-grade threading tools. Its 3.2mm HSS wire dimensions make it especially suitable for CNC grinding centers and automated tool fabrication lines. Due to its ROHS compliant steel composition and consistent metallurgy, it is preferred by Tier-1 suppliers serving automotive, medical device, and turbine component industries — where repeatability, regulatory compliance, and extreme cutting performance are essential.
EN
