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HIGH SPEED HARDENING SALTS

PRODUCT IDENTITY MELTING POINT WORKING RANGE
SOLUTION TREATING
Nu-Sal 1230°F
(665°C)
1300-1650°F
(704-899°C)
Uni-Hard® IR 1020°F
(549°C)
1100-1700°F
(593-927°C)
Sta-Hard 17 1175°F
(635°C)
1300-1900°F
(704-1038°C)
Sta-Hard 45 1450°F
(788°C)
1550-2100°F
(843-1149°C)
High Speed 60 1600°F
(871°C)
1700-2300°F
(927-1260°C)
High Speed 75 1750°F
(954°C)
1900-2400°F
(1038-1316°C)
QUENCHING
800 Neutral Salt 850°F
(454°C)
925-1250°F
(496-677°C)
900 Neutral Salt 920°F
(493°C)
1000-1300°F
(538-704°C)
TEMPERING
800 Neutral Salt 850°F
(454°C)
925-1250°F
(496-677°C)
900 Neutral Salt 920°F
(493°C)
1000-1300°F
(538-704°C)
AL-2 500°F
(260°C)
550-1100°F
(288-593°C)
AL-3 580°F
(304°C)
630-1100°F
(332-593°C)
CASING
#90 Casing 925°F
(496°C)
950-1200°F
(510-649°C)

NU-SAL This barium-free salt is the most economical and most commonly used neutral salt for heat treating performed within its working range. It is non-hygroscopic and relatively non-corrosive to metal and fixtures.

UNI-HARD® IR Frequently used as a preheat for tool hardening or as a heating medium for continuous production hardening. Dragout is minimal because of high fluidity. Uni-Hard IR is water soluble and non-hygroscopic. Non-ferrous and precious metals as well as ferrous alloys can be treated in Uni-Hard IR.

STA-HARD 17 A neutral salt for hardening, annealing, normalizing or preheating high speed tools. It is non-decarburizing, making it suitable for heating alloy tool steels which require high hardening temperatures.

STA-HARD 45 A stable salt for neutral heating of ferrous and non-ferrous alloys. Sta-Hard 45 is similar to Sta-Hard 17 but provides higher working temperatures.

HIGH SPEED 60 A neutral salt designed for heat treating high alloy steels requiring temperatures of 1650 to 2200°F.

HIGH SPEED 75 Used in forging, brazing, and high temperature hardening of high speed, high carbon, high chrome steels, and stainless steels. Finish ground tools can be heated in High Speed 75 without harming critical areas such as threaded sections.

800 Neutral Salt Working range covers temperatures frequently used in hardening and tempering steel. This product is also used as a high speed quench and draw.

900 Neutral Salt For quenching and tempering steel. #900 is especially suited for oil hardening followed by relatively high draw, since no washing is required between quench and draw. #900 is less hygroscopic than #800 and can be used at higher temperatures.

AL-2 A mixture of nitrates in granular form especially formulated as an economical bath for tempering tool steels requiring treatment within its working range. This is a highly fluid bath that offers low dragout because of its fast drainage properties. Applicable where chloride salts are not wanted.

AL-3 A low-cost mixture of nitrates in granular form especially formulated for tempering steels where the lower melting point and wider working range of AL-2 are not needed. Like AL-2, AL-3 is also a highly fluid bath that offers low dragout because of its fast drainage properties. It is another non-chloride alternative.

#90 CASING SALT An economical, cyanide based salt which produces hard wear resistance properties for high speed tool steels in low dragout and/or low production use. It will maintain optimum operating characteristics over long periods of time, and provide an active operating bath on short notice. Casing is achieved at lower temperatures where iron nitride is selectively formed as a thin case on the tool surface.

For additional information on Heatbath/Park Metallurgical High Speed Hardening Salts, Contact Us.

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