W. NR. 1.1730

Characteristics

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

Suitability

For locksmith and assembly tools, tools for woodworking, hardened components of molds, e.g. base plates, cases, columns, stops, suspension components and products etc. Further the steel is appropriate for agricultural, blacksmith and bricklayer tools.

Chemical composition of steel W.Nr. 1.1730

Heat treatment of steel W.Nr. 1.1730

Way		Temperature [°C]	Procedure
Forging		1050-800	Cool slowly in calm air or better e.g. in dry ash or other thermally-insulated material
Normalization		840-860	Cool in air
Soft annealing		680-710	Warm few hours (according to the size of object). Mostly four hours are enough and cool slowly in the furnace
Annealing to lower tension		600-650	Warm 1 to 2 hours and cool slowly in the furnace
Hardening	in water	790-820	Big and simple objects
	in oil	800-830	Thin cross-sections of thickness up to 5 mm
Tempering		180-300	Cool in air or water, the degree of tempering is set by hardness and toughness of instrument according to the tempering chartPoznámka

Note

• Cross-sections thicker than 5 mm have a hardening irregular layer and are softer on the surface at hardening into oil.
• After hardening into oil the hardness of about 50 HRC is reached.Tabulka popouštěcích hodnot v závislosti na tvrdosti

Chart of tempering values depending on the hardness

Round bars: D20 - D615
Metal sheets: s.10 - s.200
Blocks: 510x1600
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.