W. NR. 1.2101


Chrome-silicon steel with the middle hardenability for hardening in oil, very good toughness at the relatively high hardness, good resistance to the dynamic, alternating stress and stress by hits, very good flexibility and resistance to the wear (also in the untreated state), good ductility at the heat and good workability in the annealed state.


Tools for cold cutting, i.e. all the types of cutting tools, punching tools, shear blades for cutting of materials of bigger thicknesses. Cutting tools for woodworking e.g. planing knives, milling machines, drills, chain cutters etc. Hand tools, i.e. hand and pneumatic chisels, screwdrivers, keys etc. Fastening tools, e.g. collets. Further for molds e.g. ejectors, threaded pins for mechanical working of plastic materials, molds for pressing of bricks and fireclay goods. Tools for crushing and grinding – smaller hammers and jaws of crushers.

Chemical composition of steel W.Nr. 1.2101

Steel gradeChemical composition in %Hardness in the state
CMnSiCrWMoVNi maxCoP max.S max.HB max.HRC min.
DIN 62SiMnCr40,58-0,660,90-1,200,90-1,200,40-0,70     0,0300,03022561
ČSN 19 4520,55-0,650,60-0,901,50-1,900,70-1,00   0,35 0,0300,03523058

Heat treatment of steel W.Nr. 1.2101

WayTemperature [°C]Procedure
Forging850-1050Cool slowly in calm air or better e.g. in dry ash or other thermally-insulated material
Soft annealing700-750Warm few hours (according to the size of object), mostly four hours are enough and cool slowly in the furnace
Annealing to lower tension600-650Warm 1 to 2 hours and cool slowly in the furnace
Hardening830-860Oil or hot bath 180-220 °C
Tempering240-350Cool in air, the degree of tempering is set by hardness and toughness of instrument according to the tempering chart


  • Appropriate spring hardness is about 45-55 HRC.

Chart of tempering values depending on the hardness:



Product range

Round bars: D6 - D215
Blocks: 410x810
We will deliver any semi-finished products from the above mentioned dimensions. Other dimensions, except for given stock supplies, have to be consulted with us.

Tool steel meets the requirements of various kinds of tools, e.g. for machining, hot- and cold-working, measuring instruments and die-casting moulds. We also offer high-speed steel.

Tool steel meets the requirements of various kinds of tools, e.g. for machining, hot- and cold-working, measuring instruments and die-casting moulds. These tool materials conform to great quality demands of steel, like temper, strength, toughness, resistance to tempering, hardening capacity, dimensional stability, etc. The range of tool steel in our store includes products from renowned manufacturers. We also supply high - speed steel.

Special tool steel is suitable for the manufacture of moulds, dies and pressing tools. This steel have better end-use properties than common classic steel, therefore it can help saving considerable amounts of money in manufacture.

This patented Swedish steel is distinguished by its high range of use. It is suitable for the manufacture of tools and moulds as well as machinery parts. This material can replace many kinds of classic tool and structural steel.

We supply these grades of steel: St52.3, C45, 16MnCr5, 42CrMo4