Austenitize 1950?F (1065?C). Quench to below 125?F (50?C). Double temper at 600?F (315?C) 2 hrs. minimum each temper. Cool to hand warm between
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You end up between 64 and 62HRC
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Note: avoid tempering temperatures higher than 200°C because the steel will loose to much of its potential and between 200 and 300°C the is a area of
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A freezing treatment - may be used between the first and second tempers. Freezing treatments help to attain maximum hardenability and must always be
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Accademia della crusca
