W. NR. 1.2080

Characteristics

High-alloy chrome steel with big hardenability for hardening in oil and in air, especially high resistance to the wear both by metal and by mineral substances, good cutting power, very high hardness in the pressure, significantly low toughness especially in traverse, significant carbide spacing. This steel has a good dimensional stability during the heat treatment but the change of dimensions is bigger than by the steel 1.2842. The steel is sensitive to the fast and uneven heating, suitable for hardening on the secondary hardness (the possibility of nitriding). Further the steel is brushed with big difficulties, at the heat it is forged with big difficulties and it has a rather difficult workability in the annealed state.

Suitability

Tools for cold cutting, i.e. all kinds of tools with a high durability for cutting on presses and punching of materials of smaller thicknesses and materials of high hardness (especially difficult-shape tools for cutting e.g. transformer metal sheets and metal sheets from stainless steel), blades for sheet shears and strip steel into the thickness of about 4 mm, blades for wire cutting etc. Tools for mechanical working such as e.g. smaller girders and tools for drawing, all kinds of simple tools for transformation and punching of materials of smaller thicknesses by which an additional stress by bending or on tearing does not occur. Further the steel is suitable for simple and symmetric tools for extrusion and pushing, tools for thread rolling, plain and profile rollers, swages and also for hot work. Cutting instruments such as broaches, profile knives and difficult-shape milling machines for lower cutting speeds and for cutting of nonmetallic abrasive materials. Further the steel can be applied during the production of small molds with a high durability for mechanical working of plastic and powder substances, glass, porcelain and ceramic materials. By instruments for crushing and grinding it is used for hammers of crushers and jaws for soft grinding and crushing.

Chemical composition of steel W.Nr. 1.2080

Steel gradeChemical composition in %Hardness in the state
soft-annealedheat-treated
CMnSiCrWMoVNi maxCoP max.S max.HB max.HRC min.
DIN X210Cr121,90-2,200,15-0,450,10-0,4011,00-12,00     0,0300,03024860
ČSN 194361,80-2,050,20-0,450,20-0,4511,00-12,50   0,50 0,0300,03525061

Heat treatment of steel W.Nr. 1.2080

WayTemperature [°C]Procedure
Forging850-1050Cool slowly in calm air or better e.g. in dry ash or other thermally-insulated material
Soft annealing800-840Warm 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
Hardening in oil930-960Cool difficult-shape instruments in oil at the temperature of about 80 degrees Celsius or thermally in bath at the temperature of about 400-450 degrees Celsius or in air.
Hardening in air950-980Cool difficult-shape instruments in oil at the temperature of about 80 degrees Celsius or thermally in bath at the temperature of about 400-450 degrees Celsius or in air.
Tempering180-250Cool in air, the degree of tempering is set by hardness and toughness of instrument according to the tempering chart

Note

  • Warm thicker cross-sections at the hardening temperature for at least 20 minutes. During the hardening to the secondary hardness (nitriding tools etc.) the hardening temperature of about 1080 °C and the tempering temperature of about 500 °C are used.

Chart of tempering values depending on the hardness:

°C100200300400500600
HRC636259575446

Graph

Product range

Round bars: D4 - D403
Blocks: 455x605, 305x505
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 has 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