Damax™ 3,5x50x300mm

Damax™ by Alleima is the next generation of Damascus knife steel. It features the same quality as handcrafted steel and is produced with an innovative industrialized technique with up to 135 layers of martensitic stainless steel. The large scale production offers a more cost efficient material with repeatable quality.

Damax™ is a stainless Damascus steel. After heat treatment, the grade is characterized by:

Layered structure with aesthetic design possibilities
Very high hardness
Good corrosion resistance
Damax™ Damascus steel is a multilayered steel, built up by two different steel grades that will give a different appearance after chemical etching. The steel grades in Damax™ are Alleima® 7C27Mo2 and Alleima® 19C27.

Hardening data

The exact hardening parameters need to be adjusted in every individual furnace. A general recommendation is given below:

Austenitizing:

Piece hardening

To room temperature: Recommended temperature: 1060°C (1940°F)
Deep freezing to -70°C: Recommended temperature: 1090°C (1994°F)

Batch hardening

To room temperature: Recommended temperature: 1050°C (1922°F)
Deep freezing to -70°C: Recommended temperature: 1080°C (1976°F)
Soaking time 30 minutes in furnace. The temperature should first be equalized at 850°C (1560°F) for 30 minutes to avoid necessary temperature variations.

Quenching

Quench to room temperature as rapid as possible. For optimum results 600°C (1110°F) should be reached within 2 minutes or less.

Tempering

It is recommended that tempering is performed between 175-350°C (345-660°F) for 0,5-2 hours. Brittleness occurs with tempering above 450°C (840°F).

Typical tempering curve after austenitizing at 1060°C and quenching to room temperature.

Below is an estimation of the hardness levels that can be expected with different tempering temperatures.

After quenching to room temperature:

After deep-freezing:

The Damax steel is normally manufactured with up to 135 layered Damascus billet. Other number of layers can be an option upon request. After grinding the material will have a striped appearance.

To give it some other pattern of the customer’s own design, a cold or hot embossing followed by grinding needs to be performed.