1. Superior Optical Clarity (High Transparency)
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Visual Precision: The crystal-clear finish allows you to see the object inside the mold. This is critical for split-mold cutting, ensuring you don’t damage the master pattern when cutting the parting line.
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Bubble Inspection: High transparency makes it easy to identify and remove trapped air bubbles before the silicone cures, ensuring a flawless mold surface.
2. Exceptional Dimensional Stability
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Ultra-Low Shrinkage (0.1%): The linear shrinkage is nearly zero. This means the final molded part will be an exact 1:1 replica of the original, which is vital for industrial prototyping and precision engineering.
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Long-Term Accuracy: Unlike tin-cure silicones, this addition-cure (platinum) series maintains its shape and size over time without warping.
3. Outstanding Mechanical Strength
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High Tear Resistance: With a tear strength of up to 20 kN/m these molds are incredibly durable and can withstand repeated de-molding of complex shapes without tearing.
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Extreme Elasticity: The 800% elongation means the mold can be stretched significantly to remove deep undercuts or fragile parts without breaking.
4. Optimized Processing Window
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Generous Working Time (60 Min): Provides a full hour to mix, vacuum de-gas, and pour. This reduces stress during production and is perfect for large-scale or intricate pours.
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Stable 10:1 Mixing Ratio: A standard, easy-to-measure ratio that minimizes mixing errors compared to more sensitive 1:1 systems.
5. Versatile Hardness Range (10A – 40A)
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Application Flexibility:
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10A-20A: Ideal for very intricate, fragile pieces or deep undercuts.
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30A-40A: Perfect for larger molds, flat plates, or vacuum casting where structural rigidity is needed.
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6. High Chemical Resistance
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Resin Compatibility: Highly resistant to aggressive casting resins (Epoxy, PU, Polyester), which extends the “mold life” (number of pulls you can get from a single mold) compared to standard silicones.
| Property | YST-1310 | YST-1320 | YST-1330 | YST-1340 |
| Color | Transparent | Transparent | Transparent | Transparent |
| Mixing ratio | 10:1 | 10:1 | 10:1 | 10:1 |
| Hardness (Shore A) | 10A | 20A | 30A | 40A |
| Viscosity (mPa.s) | 38000 ± 5000 | 55000 ± 5000 | 80000 ± 5000 | 85000 ± 5000 |
| Density (g/cm³) | 1.05 | 1.05 | 1.05 | 1.05 |
| Working time (Min) | 60 | 60 | 60 | 60 |
| Curing time (Hrs) | 7-9 | 7-9 | 7-9 | 7-9 |
| Tensile strength (Mpa) | ≥ 2.5 | ≥ 3 | ≥ 4.9 | ≥ 5.5 |
| Tear strength (kN/m) | ≥ 7 | ≥ 9 | ≥ 12 | ≥ 20 |
| Elongation (%) | ≥ 800 | ≥ 720 | ≥ 640 | ≥ 350 |
| Linear shrinkage (%) | ≤ 0.1 | ≤ 0.1 | ≤ 0.1 | ≤ 0.1 |
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