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SRD 40
PRODUCT HIGHLIGHTS:
- Exceptional abrasion and impact resistant
- SAFE-contains no TDI, MDI, MDA, OR MOCA
- Easy to handle
- Room temperature mixing and curing
PRODUCT DESCRIPTION:
SRD 40 is a two component urethane casting compound that is specifically formulated for high abrasion and impact resistance. It is recommended for production casting of highly wear-resistant parts and linings. This product is a safe, easy-to-handle, room temperature mixing and curing system that does not contain TDI, MDI, MDA, or MOCA. SRD 40 is relatively insenstive to typical environmental moisture and will make good void-free parts without the problems that some conventional urethane systems exhibit. The low viscosity and simple mix ratio assure uniform and easy mixing.Because of this product’s exceptional toughness and abrasion resistance, casting made with SRD 40 are particularly suitable for mining and mineral process industries.
PRODUCT HIGHLIGHTS:
- Abrasion-resistant parts and lining
- Foundary patterns and core box liners
- Roller facings and casters
- Potting and encapsulation
- Architectural models
- Cutting table tops
- Metal forming die facings
- Troughs, chutes and other equipment contacting any abrasive materials
- Machinery base pads and gears
- Or, other applications requiring a high abrasion and impact resistance casting compound
PHYSICAL PROPERTIES
| Hardness | 40±2 |
| Specific Gravity (gm/cc) cured | 1.09 |
| Displacement (cu.in./lb) | 28 |
| Color | Amber/Transparent |
| Tensile Strength (psi) ASTM D-412 | 2200 |
| Tear Strength (pli) ASTM D-624 | 540 |
| Elongation(%) ASTM D-412 | 550 |
| Shrinkage (in./in.) | 0.003 |
HANDLING PROPERTIES
| Mixed Viscosity (cps) @ 750F(240C) | 4,000±200 |
| Work Life @ 750F(240C) | 20 minutes |
| Demold Time | Normally 4-6 hours at ambient temperature; can be reduced to one hour with moderetely elevated material and /or mold temperatures. |
| Cure Schedule | Full cure in 3 to 5 days at ambient temperatures or 16 hours 1500F-1800F(660C-820C) |