STOP-OFF PAINTS

Stop-off paints for gas carburising, low pressure carburising, powder and granulate carburising, gas nitriding, nitrocarburising, plasma-/pulse plasma nitriding and annealing processes. 

Carburising and nitriding processes are based on the thermochemical diffusion of carbon and/or nitrogen into the surface layer of heat-treated components.

CONDURSAL, CONDURON and VACUCOAT stop-off paints set standards when high-quality and complex components have to be protected gas-tight against diffusion in defined areas during heat treatment. This is to enable subsequent processing steps, such as machining, forming or welding, in individual cases also to minimise the risk of cracks during truing, especially in the area of thread tips or punctures. The unsurpassed high product quality, based on the use of modern manufacturing and testing methods, provides a process-reliable protection. In addition, the excellent productivity of the stop-off paints enables a particularly economical and resource-saving application.

Application can be carried out by brushing, dipping, spraying, stamping or by customer-specific procedures to suit customer´s requirements. 

We also offer special thinners, adapted to the respective product to ensure the consistency in regard to the customer’s specific need.

GAS CARBURISING

ProductMaximum depth of carburisationSolvent-freeRemovabilityTypical areas of application
CONDURSAL 0090
CONDURSAL 4000
CONDURSAL 0119
1,3 mm
1,3 mm
1,3 mm
NoWater-washableAutomotive/supplier industry, mechanical engineering, electric tools, chain manufacturing, drives, production and commercial heat treatment shops
CONDURSAL 666
CONDURSAL 777
CONDURSAL 790
1,0 mm
1,7 mm
3,0 mm
YesWater-washableAutomotive/supplier industry, mechanical engineering, electric tools, chain manufacturing, drives, production and commercial heat treatment shops
CONDURSAL 0118
CONDURSAL 0118GWE
CONDURON G55HK
CONDURON G55
CONDURON 33
CONDURON LV
CONDURON 160
3,0 mm
3,0 mm
4,0 mm
5,0 mm
5,0 mm
5,0 mm
5,0 mm
YesMechanically removable 
by brushing or blastingLarge gearbox parts, mining, oil production and drilling industries, production and commercial heat treatment shops

LOW-PRESSURE CARBURISING

ProductMaximum depth of carburisationSolvent-freeRemovabilityTypical areas of application
VACUCOAT 0095
VACUCOAT 200
VACUCOAT 300
4,0 mm
1,7 mm
3,0 mm
No
Yes
Yes
Water-washable
Water-washable
Mechanically removable by brushing or blasting
Automotive/supplier industry, production and commercial heat treatment shops

POWDER/GRANULATE CARBURISATION

ProductMaximum depth of carburisationSolvent-freeRemovabilityTypical areas of application
CONDURSAL 0118 GWE1,3 mmNoMechanically removable by brushing or blastingPowder/granulate carburisation

NITRIDING

ProductHeat treatment processesSolvent-freeRemovabilityTypical areas of application
CONDURSAL N633
CONDURSAL N643
CONDURSAL N650
Gas nitridingYesMechanically removable by brushing or blastingMould production, toolmaking, mechanical engineering, Automotive / supplier industry, production and commercial heat treatment shops
CONDURSAL N9
CONDURSAL N9W
Nitrocarburising
Plasma-/ Pulseplasma­nitriding
NoMechanically removable by brushing or blastingMould production, toolmaking, mechanical engineering, Automotive / supplier industry, production and commercial heat treatment shops
CONDURSAL N690 Nitrocarburising
Plasma-/ Pulseplasma­nitriding
YesMechanically removable by brushing or blastingMould production, toolmaking, mechanical engineering, Automotive / supplier industry, production and commercial heat treatment shops

SEALING / PLUGGING

ProductDescription
CONDURON LR20Kneadable stop-off paint for insulation and sealing applications e.g. to plug blind boreholes and to seal annealing and carburising boxes

ANNEALING

ProductDescription
CONDURSAL Z0095Scale stop-off paint for temperatures between 650°C and 850°C. Residues may be washed off with hot water or waterbased cleaning agents.
CONDURSAL Z1100Dippable, brushable and sprayable scale stopp-off paint for annealing temperatures between 650°C and 1,100°C. Removal of residues by brushing.

PROCESS FLUIDS

ProductDescription
CITROX II
NITROSAFE
Process fluids for cleaning and depassivation prior to nitriding and nitrocarburising processes

SPECIAL THINNER

ProductDescription
Special thinner Available for all listed qualities of stop-off paints

 Typical heat treating process: Automated application via outflow process

Typical range of heat treated parts: Protected large volume gear parts
source: Wittmann Härterei GmbH, Uhingen, Germany

Typical range of heat treated parts: Protected large volume gear parts

PROCESS MATERIALS