The graph shows a continuous cooling test in which the austenitizing temperature was approximately 1040°C (1900°F).
Continue readingOne Minute Mentor: Quenching of Hot-Work Tool Steels
Hot-work steels range from high to extremely high in hardenability, so it is possible for them to achieve full hardness by cooling in still air. However, this is not recommended, because intense embrittlement occurs after slow cooling from hardening temperature.
Continue readingOne Minute Mentor: Secondary Hardening in Tool Steels
As shown schematically in the graph, high-temperature hardness is made possible only by a very important straightening mechanism: secondary hardening, promoted by the precipitation of fine alloy carbides.
Continue readingOne Minute Mentor: Relation Between Tempering Temperature and Hardness
The graphs show the relation between tempering temperature and hardness for D2 and D3 tool steels.
Continue readingOne Minute Mentor: Austenitizing Powder Metallurgy Steels
Steels of groups A and D as well as 8%Cr or High-V-PM steels are usually austenitized in vacuum furnaces or in various types of furnaces using gaseous atmospheres.
Continue readingOne Minute Mentor: Tempering F Tool Steels
Because of their tungsten content, F-steels form hard tungsten carbides.
Continue readingOne Minute Mentor: Atmospheres for Water-Hardening Tool Steel
Excellent results are obtained by austenitizing water-hardening tool steels in a slightly oxidizing atmosphere, as indicated by the data in the graph, obtained in tests on type W2.
Continue readingOne Minute Mentor: Austenitizing Water-Hardening Tool Steels
Austenitizing temperatures for water-hardening tool steels normally vary from 1400 to 1550°F. Higher temperatures are sometimes used for special purposes.
Continue readingBuehler introduces fully automated hardness tester
Buehler, Lake Bluff, Ill., an ITW company, created the fully automatic Wilson VH3300 Vickers/Knoop hardness test system to meet virtually any requirement in the area of automated precision micro hardness testing.
Continue readingOne Minute Mentor: Hardening Type W1 Tool Steels
W1 steels are capable of hardening to high surface hardness and soft core which is useful in some shock applications.
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