Silicone condensation HT 60 Set - Hard /Wacker 4470 + T 40 Set
The silicone condensation HT 60 is a 2-component condensation curing casting silicone that cures at room temperature. The silicone is highly filled and suitable for the production of moulds for low temeprature alloys like Zamak, tin or lead.
Because the silicones are highly filled they tent to break when bent too far. Therefore we advise not to use this siliconen for moulds with may or large undercuts.
- Color: Red-Brown
- Easy to mix
- Short-term heat resistant up to 380 ° C
- Very hard. Shore A 60
- Mixing ratio (in weight): A:B = 100:2
- Pot life at 20°C: 40 Minutes
- Demoulding at 20°C: 4 hours
- Full strength after: 3 days
- Hardness: Shore A 60
- Viscosity at 20°C: 11.000 mPa's
- Tear strength: 45 Kg/cm2
- Color: Red Brown
Note: Pot life and demold time are dependent on the mixing ratio and Humidity. Addition of more than 2% silicone B (harder) or working at higher humidity will shorten pot life and demould time.
The fillers in the A-component must be mixed thoroughly before use.
The silicone C HT 60 can easily be mixed by hand or by machine. Mix the components thoroughly in the ratio indicated. Process the mixture within the pot life and de-mould after the whole thing is completely cured. Make the mould as thin as possible.
After cure, post cure the rubber mould by putting it in an oven for 2-3 hours at 150 ° C to remove trapped vapors. Coat the mold (prior to casting the alloy into it) with a layer of talcum powder or graphite powder, this will improve the wetting of the alloy onto the mould surface. Make sure that the mold is heated prior to csating the alloy. Put the mould on a surface with a high thermal conductivity.
The standard package contains 1 kg A-component and 20 g B-component. For larger quantities please contact us via the webshop.
When stored in sealed packaging at a temperature of 10-25 ° C, the shelf life is at least 1 year. If the A component has been on the shelf for long, the fillers should be stirred well before use.
If you frequently work with silicones, it is recommended to wear gloves during processing and to ventilare the room well. Please refer to the Material Safety Data Sheet for more information.
H-Code hazard statements
H226 Flammable liquid and vapor.
H319 Causes serious eye irritation.
H332 Harmful by inhalation.
H335 May cause respiratory irritation.
H373 May cause damage to organs through prolonged or repeated exposure.
H413 May be harmful to aquatic life with long lasting effects.
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. Do not smoke.
P233 Keep the container tightly closed.
P243 Take precautionary measures against electrostatic charges.
P271 Use only outdoors or in a well-ventilated area.
P280 Wear protective gloves / protective clothing / eye protection.
P273 Avoid release to the environment.
P304 + P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P312 Call a POISON CENTER / doctor if you feel unwell.
P305 + P351 + P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if possible. Keep rinsing.
P337 + P313 If eye irritation persists: Get medical advice / attention.
P370 + P378 In case of fire: Use water spray jet, dry powder, foam or carbon dioxide to extinguish.
P403 + P235 Store in a well-ventilated place. Stay calm.
P501 Dispose of contents / container.