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HIGH TEMPERATURE SILICONE FOR METAL COATING – Tin and lead resistant

HT silicone is specially designed to withstand high temperatures, enabling the casting of low-melting metals such as tin and lead.

 15,67 52,38

Description

HT silicone is a two-component RTV-2 silicone rubber that cross-links by condensation at room temperature.

This elastomer is suitable for molding applications requiring good resistance to deformation and heat. It is fluid, easy to use and offers highly detailed reproduction.

It is particularly recommended for casting low-melting metal alloys such as tin and lead.

High-temperature silicones have a higher hardness and are only suitable for reproducing models with little or no undercut.

HT silicone is recommended for limited reproductions (not mass production) and is not compatible with a thixotropic.

Features

Mixing ratio: 3% (e.g. 100gr silicone + 3gr Catalyst)

Color: reddish-brown

Hardness (Shore A): 60

Pot life at 23°C: 90 min.

Demoulding: 24h

Density (g/cm³): 1.44

Viscosity (mPa.s): 10000

Linear shrinkage (%): < 0.7

Shelf-life: 12 months in original packaging between 5°C and 25°C.

Packaging: sold by kit (A+B): 200gr + 10gr/ 1kg + 50 gr/ 5kg +200gr

Applications

Jewelry and accessories: carved rings, bracelets, pendants, earrings, engraved medallions.

Miniatures and figurines: collectible figurines (fantasy, soldiers, wargames), decorative statuettes, scale models (cars, planes, boats).

Parts for model making and scale models: miniature wheels and gears, model train details, diorama components, miniature weapons replicas.

Decorative accessories: furniture handles and knobs, sculptures and bas-reliefs, ornaments for frames and mirrors, metal weights for curtains and tablecloths.

Utility and technical items: antique keys and locks, small hinges and fittings, weights for scales and measuring instruments, cable holders and special fasteners.

Promotional products and goodies: personalized tokens, metal key rings, mini trophies, commemorative medals.

Implementation

1. Surface preparation

If the surface of the model to be reproduced is absorbent or naturally porous (wood/plaster/ceramic/etc.), it may be necessary to apply a sealer or release agent. release agent to prevent the silicone from penetrating the material and adhering to the model.

2. Formwork

Make a mould around the object to be reproduced, leaving enough space to contain the silicone (wall thickness between 4 and 10 mm).

Carefully check that the formwork is watertight, to avoid disaster.

Make sure the object is firmly attached to the base to prevent it from shifting or floating during filling.

3. Ratio & mixing

In a clean, dry container, weigh out the quantity of silicone required and calculate an addition of 3% catalyst (e.g.: 100gr silicone + 3gr catalyst).

Using a spatula, mix the two components until you obtain a HOMOGENEOUS paste.

With mechanical assistance, keep the speed low (300 to 500 rpm) for 2 to 3 minutes and keep the mixer head in the silicone to limit the incorporation of air bubbles.

4. Pouring silicone

Aim for the lowest point and pour the silicone in a thin vein.

The first coat can be applied directly with a brush, then the rest of the mold can be filled.

5. Hardening

Allow the silicone to harden at room temperature.

You can unmold the next day.

6. Cleaning

Do not attempt to clean the liquid silicone; it is best to remove it from the instruments once it has dried.

Accessories

Release Spray for fast, smooth demolding

Protective gloves offer excellent chemical resistance.

The Accessories Pack includes all the equipment you need to take your first steps.

The Mixer Jesmonite effectively reduces bubbles and lumps.

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