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QUENCHING AND TEMPERING SALTS

PRODUCT IDENTITY MELTING POINT WORKING RANGE
GROUP I
Low Temp Draw Salt 275°F
(135°C)
300-1100°F
(149-593°C)
Thermo-Quench 288°F
(142°C)
300-1100°F
(149-593°C)
Marquench 305°F
(152°C)
350-1100°F
(177-593°C)
Aus-Quench 354°F
(179°C)
375-1100°F
(191-593°C)
High Temp Draw Salt 430°F
(221°C)
480-1100°F
(249-593°C)
AL-2 500°F
(260°C)
550-1100°F
(288-593°C)
GROUP II
#800 850°F
(454°C)
925-1250°F
(496-677°C)
#900 920°F
(493°C)
1000-1300°F
(538-704°C)
Uni-Hard® IR 1020°F
(549°C)
1100-1700°F
(593-927°C)
Cartecsal 810°F
(432°C)
850-1750°F
(454-954°C)
Wire Annealing 1050°F
(565°C)
1100-1700°F
(593-927°C)

GROUP I SALTS

LOW TEMP DRAW SALT An eutectic mixture offering the lowest melting point (275°F) and a wide working range. (275 Parkettes)

THERMO-QUENCH Eutectic mixture with slightly higher but narrower melt range than Low Temp Draw Salt and similar working range. This has been the most widely used quench salt for many years. (290 Parkettes)

MARQUENCH Low-cost quench salt with slightly higher melting point and narrower working range than Low Temp Draw Salt and Thermo-Quench salt.  It is as fluid as lower melting salts above 400°F offering equivalent quenching and drain off. (330 Parkettes)

AUS-QUENCH Quench salt whose melting point and working range make it particularly suitable for ausquenching / austempering. (350 Parkettes)

HIGH TEMP DRAW SALT Salt mixture particularly suitable for isothermal tempering of steel and certain non-ferrous alloys.

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.

GROUP II SALTS

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

#900 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. Formulated per MIL-S-10699-B, Class 4A.

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.

CARTECSAL Mixture specified and developed for the U.S. Energy Department for processing alloys containing uranium where chloride compounds are objectionable and where cleaning is important.

WIRE ANNEALING SALT (W.A.S.) Chloride and carbonate mixture recommended for annealing non-ferrous materials or for heat treating steel where slight decarburization is not undesirable. W.A.S. is extremely fluid, completely water soluble, neither hygroscopic nor corrosive, but tends to decarburize steel parts at temperatures above 1300 deg. F.

For additional information on Heatbath/Park Metallurgical Quenching and Tempering Salts, Contact Us.

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