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1.2510 (100MnCrW4 / O1)

1.2510  (100MnCrW4  / O1)
1.2510  (100MnCrW4  / O1)
1.2510  (100MnCrW4  / O1)
1.2510  (100MnCrW4  / O1)
1.2510  (100MnCrW4  / O1)
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Tough-hard tungsten steel for work knives or as dark steel in high performance damascus steel Lire plus..

1.2510 is a melt metallurgical tool steel. The steel achieves a working hardness of max.63hrc with standard knife cross-sections. The wear resistance is lower than that of higher alloyed melt metallurgical steels such as 1.2063, 1.2419.05 or 1.2562. In return, this steel offers excellent toughness and robustness, which makes it particularly interesting for work knives and similar cutting tools. 

It can be forged without major risks and the heat treatment is unproblematic. 

In the high performance damascus steel, this steel offers clear advantages over the frequently used 1.2842. The 1.2510 can just as easily be conventionally fire-welded and also offers a certain resistance to errors in terms of temperature control. Furthermore, it draws almost as dark in the damascus steel as the 1.2842. However, it has significantly better wear resistance and toughness than 1.2842. That makes it my favorite "dark" steel in high performance damascus steel. In damascus steel, it can be sensibly combined with a variety of other steels.

I myself do not offer a hardening service for the steels I sell. However, I can unreservedly recommend the hardening service of my colleague Jürgen Schanz. He works with a very experienced hardening shop that also carries out demanding heat treatments exactly according to customer requirements. If necessary, contact Jürgen Schanz directly via his contact form.

Available dimensions:




2,8x40x660mm = 570g

2,8x55x660mm = 780g


Carbon:                1,0%                 

Silicon:                  0,3%

Manganese:           1,2%     

Tungsten:              0,7%

Chromium:             0,7%

Vanadium:              0,1%       

Manufacturing method:

Smelting metallurgy

Corrosion resistance:

Not stainless.


Rolled, sandblasted


The material is cut with the guillotine scissors. The pieces can therefore have a minimal amount of warpage, which can, however, be straightened without further ado.

Recommended heat treatment:

Forging: Form forging (heavy deformation) between 1100 °C and 850 °C. Fine forging (minor deformation) between 850 °C and 750 °C.

Normalize: 2x Heat up to 840 °C and immediately cool in air to below 721 °C (Ar1). Then 3x heat up to 800 °C and immediately quench in oil until the glow color has disappeared.

Soft annealing: hold at 720 °C for approx. 60 minutes, then cool down in the furnace.

Hardening: 820 °C (6-8 min holding time) or 840 °C (3-5 min holding time)

Quenching: Oil, AAA-DA or Durixol V35

Tempering: 175°C to max. 200°C. 2x one hour each, water cooling in between.

Achievable hardness: 61-63 hrc.

Note: A deep freeze treatment (-70 °C) between hardening and tempering can reduce the retained austenite content and thus increase the working hardness with the same toughness.

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