Tool steels are a family carbon and alloy steels having distinct characteristics such as hardness, wear resistance, toughness, and resistance to softening at elevated temperatures. Tool steels comprise carbide-forming elements such as chromium, vanadium, molybdenum and tungsten in different combinations. Tool steels are frequently used for the shaping of other materials. Types of tool steel include hot work, cold work, plastic mould and high speed steel. The choice of steel for a particular application depends on which tool steel properties suit best, such as the required hardness, shock resistance, strength and toughness. Other considerations include the working temperature, abrasion resistance and working environment. Tool steels are used for shaping metals, plastics, glass forming in glass-works, woodworking, paper production, guillotines, blades, drill bits and cutting tools. These are just examples of applications, and the term "tool steel" is permanently granted by the tools made of it during the initial development of the whole subgroup. Today the scope of application is so wide that it is hard to unambiguously catalog all grades to one department.
Plastic Mold Steel
Of plastics; They are tool steels used in shaping with injection, extrusion, blow molding and various pressing techniques. Plastic moulding is a part of our everyday lives. Car parts, mobile phones, spectacles and computer chassis are all manufactured in moulds. However, the materials needed to make these moulds often require unique and demanding characteristics. This is why it is crucial to select the correct steel grade for your specific mould. Harsh environments put steel under considerable stress. The problems are well-known, choosing the right tool steel is the solution. A moulder knows that the cost of excessive mould maintenance, e.g. major repolishing, clean- ing, replanting and replacing of worn or broken parts has to be taken into account. The costs of production and down time, overtime payment, late-delivery penalties and loss of customer good- will also need to be considered.
Hot Work Tool Steel
They are used for die casting, continues casting and die forging. When using them at temperatures of more than 200 °C and also at changing thermal loads the structure needs to be stable that warm ductility, high temperature strengths and wear-resistance will not be negatively affected. Due to the fact that not all required characteristics are realizable in one kind of steel the selection needs to be effected according to the use of the tools. Herewith the chemical composition shows two alloy groups: WCrV steels and CrMoV steels.
Cold Work Tool Steel
A better durability of the tool can be achieved due to an intelligent use of the raw material which ensures an economic production and also a high productivity. There are also for the cold work steels more and more high demands. This results from modern production machines for optimizing of manufacturing processes as well as the continous rising demands on the quality of the manufactured products. The temperatures are different; normally under 200°C surface temperature. For achieving the best material’s characteristics and also a long durability the coordination of the alloys is really important. Due to a different use of chrome, molybdenum, vanadium and tungsten the requested characteristics can be achieved with different steels. A distinction is drawn between cold work steels for cuts + cutting tools and cold work steels for stamping and piercing dies.
High Speed Steel
The group of high-speed steels includes all high-alloy tool steels that retain the necessary, high installed hardness of roughly 60 to 67 HRC at working temperatures of up to almost 600 °C. Their service properties are partly attributable to the high carbide content, which results in very high wear resistance. For every field of application, we supply individual, tailor-made steels characterised by the following properties, among other things: Very good wear resistance High pressure resistance Great toughness