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Material Name | Shore Hardness | Description | Technical Information |
ABS-Like | Shore D 78-82 | A tough Shore 80D flame retardant material that is UL Listed with a flammability rating at 1/16" (1.6 mm). | TC-891-FR or equivalent |
Polycarbonate-Like | Shore D 82-86 | A stiff, high impact, high HDT, material with a wide variety of uses. Simulates polycarbonate (non-clear), Shore 84D. | TC-854 or equivalent |
Glass-Filled Nylon-Like | Shore D 85 | A stiff, USP Class VI, high-performance urethane with high impact strength and a HDT of 190°F (88°C). | PT8902 or PT8952 (FR) |
Rubber-Like Polyurethane | Shore A 25-95 | A Shore A elastomer with a high elongation to break. | F-130 to F-190 or equivalent |
Clear Rubber-Like Polyurethane | Shore A 40-95 | A colorless Shore A elastomer with a high elongation to break. Matte finish will give a frosted appearance, and higher gloss will increase its transparency. | WC-540 to WC-595 or equivalent |
Somos ProtoGen 18420 | White, ABS-like | 71MPa/KSI | 16% |
Somos Taurus | Dark Gray, ABS-like | 71MPa/KSI | 24% |
Description | Tolerance Notes |
Distance Dimensions | +/- 0.010” or +/- 0.003” per inch, whichever is larger, is typical. Irregular or overly-thick geometries may cause deviances or deflection due to shrinkage. |
Shrink Mitigation | A shrinkage rate of +0.15% can be expected due to thermal expansion of the liquid, and the response of the flexible mold. |
Surface Quality | Surface finish is externally smoothed to a satin or matte surface. Grow lines may be present on internal or difficult-to-access features. Polishing or custom finishes must be clearly defined and agreed upon at the point of order. |
Feature Definition | Sharp corners and text may appear slightly rounded. |
Size Recommendation | We can offer urethane cast parts as large as 30” (0.762 m) long. |