W. NR. 1.1545

Characteristics

Carbon tool steel characterized by high hardness of hardening layer, high toughness and especially good insensitivity to hardening cracks. Further the steel is characterized by good ductility during the heat and good workability in the annealed state.

Suitability

For small, simple-shaped and less stressed machines for punching, drawing, forming, extrusion, pushing and cold-work cutting, auxiliary hardened components of extrusion machines and molds. Further the steel is used for forgings for rotary forging, small and simple or folded molds for mechanical working of plastic substances and rubber, tools for woodworking, manual marking dies, shear blades, transmission cutters, edges of weights, clamping tools etc.

Chemical composition of steel W.Nr. 1.1545

Steel gradeChemical composition in %Hardness in the state
soft-annealedheat-treated
CMnSiCrWMoVNi maxCoP max.S max.HB max.HRC min.
DIN C105W11,00-1,100,10-0,250,10-0,25      0,0200,02021360
ČSN 19 1910,95-1,090,20-0,350,15-0,300,15   0,20 0,0250,03020064

Heat treatment of steel W.Nr. 1.1545

WayTemperature [°C]Procedure
Forging800-1000Cool slowly in calm air or better e.g. in dry ash or other thermally-insulated material
Normalization790-810Cool in air
Soft annealing680-710Warm 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
Hardeningin water750-770Small and shape-complicated objects
770-830Big and simple objects
in oil790-820Thin cross-sections of thickness up to 3 mm
Tempering180-300Cool in air, the degree of tempering is set by hardness and toughness of instrument according to the tempering chart

Note

  • Steel cannot be hardened in vacuum furnaces.
  • Shape-complicated objects which are susceptible to hardening cracks have to be broken-hardened.
  • After hardening into oil, cross-sections, which are hardened, achieve the hardness of about 62 HRC. Cross-sections thicker than 3 mm have a hardening irregular layer and are softer on the surface during hardening into oil.

Chart of tempering values depending on the hardness

°C100200300350
HRC65625650

Graph

Product range

Round bars: D20 - D200
Blocks: 210x410
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