Tool steel: Difference between revisions
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'''Tool steel''' refers to a variety of [[carbon]] and [[alloy]] [[steel|steels]] that are particularly well-suited to be made into [[tool]]s. Their suitability comes from their distinctive toughness, resistance to [[abrasion]], their ability to hold a cutting edge, and/or their resistance to deformation at elevated temperatures (red-hardness). |
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With a carbon content between 0.7% and 1.4%, tool steels are manufactured under carefully controlled conditions to produce the required quality. The [[manganese]] content is often kept low to minimise the possibility of cracking during water [[quenching]]. However, proper [[heat treatment|heat treat]]ing of these steels is important for adequate performance, and there are many suppliers who provide tooling blanks intended for oil quenching. |
With a carbon content between 0.7% and 1.4%, tool steels are manufactured under carefully controlled conditions to produce the required quality. The [[manganese]] content is often kept low to minimise the possibility of cracking during water [[quenching]]. However, proper [[heat treatment|heat treat]]ing of these steels is important for adequate performance, and there are many suppliers who provide tooling blanks intended for oil quenching. |
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Tool steels are made to a number of grades for different applications. Choice of grade depends on, among other things, whether a keen cutting edge is necessary, as in stamping [[Die (manufacturing)|dies]], or whether the tool has to withstand impact [[Structural load|loading]] and service conditions encountered with such hand tools as [[axes]], [[pickaxe|pickaxes]], and [[quarrying]] implements. In general, the edge temperature under expected use is an important determinant of both composition and required heat treatment. The higher carbon grades are typically used for such applications as stamping dies, metal cutting tools, etc.. |
Tool steels are made to a number of grades for different applications. Choice of grade depends on, among other things, whether a keen cutting edge is necessary, as in stamping [[Die (manufacturing)|dies]], or whether the tool has to withstand impact [[Structural load|loading]] and service conditions encountered with such hand tools as [[axes]], [[pickaxe|pickaxes]], and [[quarrying]] implements. In general, the edge temperature under expected use is an important determinant of both composition and required heat treatment. The higher carbon grades are typically used for such applications as stamping dies, metal cutting tools, etc.. |
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==References== |
==References== |
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Ferrous metallurgy sections in [[Machinery |
Ferrous metallurgy sections in [[Machinery's Handbook]], current edition |
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[[Category:Steels]] |
[[Category:Steels]] |
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Revision as of 22:43, 10 November 2006
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Tool steel refers to a variety of carbon and alloy steels that are particularly well-suited to be made into tools. Their suitability comes from their distinctive toughness, resistance to abrasion, their ability to hold a cutting edge, and/or their resistance to deformation at elevated temperatures (red-hardness).
With a carbon content between 0.7% and 1.4%, tool steels are manufactured under carefully controlled conditions to produce the required quality. The manganese content is often kept low to minimise the possibility of cracking during water quenching. However, proper heat treating of these steels is important for adequate performance, and there are many suppliers who provide tooling blanks intended for oil quenching.
Tool steels are made to a number of grades for different applications. Choice of grade depends on, among other things, whether a keen cutting edge is necessary, as in stamping dies, or whether the tool has to withstand impact loading and service conditions encountered with such hand tools as axes, pickaxes, and quarrying implements. In general, the edge temperature under expected use is an important determinant of both composition and required heat treatment. The higher carbon grades are typically used for such applications as stamping dies, metal cutting tools, etc..
A typical composition is:
| Carbon (C) | 1.0% |
| Phosphorous (P) | 0.04% |
| Manganese (Mn) | 0.3% |
| Sulphur (S) | 0.04% |
| Silicon (Si) | 0.25% |
See also
References
Ferrous metallurgy sections in Machinery's Handbook, current edition
 | This alloy-related article is a stub. You can help Wikipedia by expanding it. |