W. NR. 1.2312

Characteristics

Chrome-manganese-molybdenum steel for hardening in air or in oil with very good hardenability and good firmness during the heat. It is well-workable during the heat and due to an increased content of sulfur well-workable both in the soft-annealed state and the heat-treated state. The steel has good polishability, it can be cemented in the bath or in gas and also put on the hard-chrome.

Suitability

Tools for processing of plastic substances such as big and middle molds, forming frames for casting of plastic substances and metals under the pressure. For less demanding tools there is a possibility to use the steel in the heat-treated state at 950 up to 1100N/mm2 without further heat treatment.

Chemical composition of steel W.Nr. 1.2312

Steel gradeChemical composition in %Hardness in state
soft-annealedheat-treated
CMnSiCrWMoVNi maxCoP max.S max.HB max.HRC min.
DIN 40CrMnMoS860,35-0,451,40-1,600,30-0,501,80-2,00 0,15-0,25   0,0300,05-0,1023551
ČSN není             

Heat treatment of steel W.Nr. 1.2312

WayTemperature [°C]Procedure
Forging850-1050Cool slowly in dry ash or thick cross-sections in the furnace
Soft annealing760-780Warm 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
Hardening840-880Cool in oil or in air at 180-220 °C
Tempering640-680Cool in air, the degree of tempering is set by hardness and toughness of instrument according to the tempering chart

Note

Chart of tempering values depending on the hardness:

°C100200300400500600700
HRC51504846423628
N/mm2173016701570148013301140920

Graph

Product range

Round bars: D20 - D303
Metal plates: s.20 - s.350
Blocks: 610x1600, 810x1200
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