High speed steel HSS

High speed steel – alloy tool steel used to manufacture tools for high performance machining (cutting speeds reach 50 m/min), such as lathe blades, milling cutters, drills. They are required to have high hardness, abrasion strength and the shape stability up to 600°C. These properties are achieved by secondary hardening effect which results from the separation of secondary carbides.

Combined drills

High speed steel

Reamer

We buy the following high-speed steel scrap:

  • Drills
  • Combined drills
  • Machine taps
  • Manual taps
  • Circular saw
  • Cutting dies
  • Detachable mills
  • Reamer
  • Countersinks
  • Centre drill
  • Multiple cutting tools
  • Envelope mills
  • Mills for gears
  • Rotary chisels
  • Special tools
  • SW 18
  • SW7M
  • SW 9
  • SW 12
  • SK8M
  • SK5M
  • SK10V
  • 1.3355
  • 1.3343
  • 1.3247
  • 1.3243
  • 1.3207

Chemical composition of high-speed steel:

  • carbon 0,75-1,4%,
  • tungsten up to 18%
  • molybdenum up to 10%
  • vanadium up to 4%
  • chrome up to 4% (responsible for anti-corrosive properties of steel)
  • cobalt up to 10%

These alloying elements are added primarily in order to provide enough stable carbides

Polish Standard PN-EN ISO 4957:2002 high-speed steels are marked as follows:

HS[%W]-[%Mo]-[%V]-[%Co] e.g. HS6-5-2-5 – High-speed steel containing 6% tungsten, 5% molybdenum, 2% vanadium and 5% cobalt.