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03:59 Sep 27, 2000
German to English translations [PRO] Tech/Engineering
German term or phrase:Warmhärte
"Für Drehmeißelschneiden werden in der Regel hochlegierte Werkzeugstähle, sogenannte Schnellarbeitsstähle (SS) oder Hochleistungsschnellarbeitsstähle (HSS) mit einer Warmhärte bis etwa 560 °C verwendet."
Explanation: ...with a heat treatment to about 560°C.
This would temper the steel after full hardening to about 800°C and quenching in water or oil. If the steel was left dead hard, it would be too brittle for use as a cutting tool. Tempering increases toughness and allows for practical use. HTH Iain
Metalwork "A" level (many years ago!)
Iain Purvis United Kingdom Local time: 22:26 Native speaker of: English PRO pts in pair: 88