Neutral Hardening Salt
Neutral Hardening Salt
NEUTRAL HARDENING SALTS
HARD TEMP 660
It is used for hardening various tool steels, selectively carburised steels, austenitising before martempering and preheating high-speed and hot-work steels. Its working range is 660-900°C and upto 1000°C.
HARD TEMP 720
It is a readily water – soluble neutral salt used in the range of 720 – 900°C or upto 950°C. The bath is used for hardening of carbon and alloy steels, carburized parts selectively machined and suitable heating medium for parts that are subsequently mar tempered or untampered.
HARD TEMP 830
It is used in the temperature range 830 – 1100°C for hardening of chromium rust-resisting steels B. S. EN 36 A-D & B. S. EN 57, 2% carbon 12% chromium type tool steels and sometime hot-work steels.
HARD TEMP 970
It is used in the temperature range 970 – 1350°C in special refractory lined mild steel pots for heating high-speed & hot-work steels to the specified hardening temperature.