Transcription of HOTVAR - Bohler Uddeholm
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HOTVAR - Bohler Uddeholm
HOTVAR . Hot work tool steel HOTVAR . General Properties HOTVAR is a high performance molybdenum- All specimens are taken from the centre of a bar vanadium alloyed hot-work tool steel which is 115 mm (4,5 ). Unless otherwise is indicated all characterized by: specimens were hardened at 1050 C (1920 F), High hot wear resistance quenched in air and tempered 2 + 2 h at 575 C. (1070 F) to a hardness corresponding to 56 HRC. Very good high temperature properties High resistance to thermal fatigue PHYSICAL DATA. Very good temper resistance Data at room and elevated temperatures. Very good thermal conductivity. Temperature 20 C 400 C 600 C. (70 F) (750 F) (1110 F).
4 HOTVAR Heat treatment— general recommen-dations SOFT ANNEALING Protect the steel and heat through to 820°C (1500°F). Then cool in the furnace at 10°C (20°F)
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