UDDEHOLM ELMAX® SUPERCLEAN

R756.00

UDDEHOLM ELMAX® SUPERCLEAN is a high chromium-vanadium-molybdenum-alloyed steel
with the following characteristics:
• High wear resistance
• High compressive strength
• Corrosion resistant
• Very good dimensional stability
High wear resistance is normally connected to low corrosion resistance and vice versa.

Elmax steel is a new generation stainless steel that can be hardened to between 61 and 62 HRC, which is significantly harder than most other stainless steel types. Generally, most other stainless steel knives can only be hardened to 58 or 59 HRC.

SIZE: 3,78mm x 50mm x 810mm

1 in stock

Category:
Bohler Voestalpine Logo

Description

Uddeholm Elmax SuperClean has been specially developed for high-tech applications. These include  products within the electronic industry such as connectors, plugs, switches, resistors, integrated circuits, etc. Uddeholm Elmax SuperClean can also be used in the food processing industry and for industrial and custom knives, where a combination of corrosion resistance and wear resistance is required.

HEAT TREATMENT:

Soft annealing:
Protect the steel and heat through to 980°C, holding time 2 hours. Then cool in furnace 20°C/h to 850°C. Holding time 10 hours. Cool slowly to 750°C.
Then cool freely in air.

Stress-relieving:
After rough machining the tool should be heated through to 650°C, holding time 2 hours. Cool slowly to 500°C. Then cool freely in air.

Hardening:
Preheating temperature: 600–850°C.
Austenitizing temperature: 1050–1100°C, normally 1080°C.

Tempering:
Choose the tempering temperature according to the hardness required by reference to the tempering graph. Temper twice with intermediate cooling to room temperature, the preferred tempering temperature is 50°C or higher. In exceptional cases, a minimum tempering temperature of 180°C can be used for small simple inserts and parts where toughness is of less importance. Holding time at tempering temperature minimum 2 hours.

References:

  1. https://www.uddeholm.com/files/PB_Uddeholm_elmax_english.pdf
  2. https://www.uddeholm.com/app/uploads/sites/12/2017/05/Uddeholm_Elmax_Heat_Treatment_Recommendation.pdf
  3. Effect of Heat Treatment on the Microstructure and Mechanical Properties of Sintered Stainless Tool Steel
  4. Uddeholm PM Steel for Knives

Disclaimer:

All info above is from my readings of research papers, forum posts, and discussions with people. I am not a metallurgist and the above is presented here for the benefit of all knifemakers. You do not have to follow them and I’ll not be held responsible for any loss or damage you may experience.

Brand

Bohler

Voestalpine / Böhler-Uddeholm is a worldwide market leader for tool steel and other specialty steels including high-quality Tool Steels, High-Speed Steel, Silver Steels, and Gauge Plates. It was formed in 1991 as a result of a merger between the Austrian parastatal Böhler and of Uddeholms AB of Sweden.
Bohler Voestalpine Logo

Additional information

Weight 1.3 kg
Dimensions 810 × 50 × 3.78 mm