Smooth-Cast™ 385

cast385pint ⓘ 5B964655-54AF-7A44-AA3F-B45479E93C30
Polyurethane Resin

Mineral-filled urethane casting resin with high compressive and flexural strength that is very hard and durable.

  • Shore hardness: 85 D
  • Mix ratio: 1:1 by weight
  • Working time: 3 minutes
  • Demold time: 10 minutes
  • Low viscosity for easy mixing
exclamation.svg health-hazard.svg

Danger

H315 - Causes skin irritation.
H317 - May cause an allergic skin reaction.
H320 -
H332 - Harmful if inhaled.
H334 - May cause allergy or asthma symptoms or breathing difficulties if inhaled.
€ 52.74

(€ 43.59 without 21% VAT)

In stock

Description

This casting resin offers excellent physical properties and is suitable for industrial and artistic applications.

Smooth-Cast™ 385 provides detailed reproduction and a smooth finish.

Features

  • Shore hardness: 85 D
  • Mix ratio: 1:1 by weight
  • Working time: 3 minutes
  • Demold time: 10 minutes
  • Low viscosity - easy mixing

Instructions

Preparation

  • Store and use at room temperature (23°C).
  • Use products as soon as possible due to limited shelf life.
  • Ensure low environmental humidity and good ventilation.
  • Wear safety glasses, long sleeves, and rubber gloves.

Applying A Release Agent

  • Use a mold release agent to facilitate demolding.
  • Apply a liberal coat of release agent on all contact surfaces.
  • Brush with a soft brush for thorough coverage, then mist and let dry for 15 minutes.
  • Conduct a small test application to ensure suitability.

Mixing

  • Pre-mix Part B before use.
  • Mix Parts A and B thoroughly, scraping sides and bottom of the container.
  • If vacuum degassing, ensure the vacuum pump pulls a minimum of 1 Bar / 100 KPa.
  • Vacuum for 1 minute after material falls.
  • Replace lids immediately after dispensing to prolong shelf life.
  • Use XTEND-IT™ Dry Gas Blanket to extend shelf life.

Pouring

  • Pour mixture at the lowest point of the containment field to minimize air entrapment.

Curing

  • Ensure adequate ventilation and avoid inhaling fumes.
  • Allow castings to cool to room temperature before handling.
  • Demold time varies with mass and mold configuration.
  • For rotational or hollow castings, backfill with rigid foam if exposed to temperatures above 30°C.

Post Curing

  • Post curing increases physical properties and performance.
  • Expose material to 65°C for 4-6 hours after room temperature curing.

Performance

  • Cured castings resist moisture, moderate heat, and solvents.
  • Can be machined, primed, painted, or bonded to surfaces.
  • Conduct a small test application to ensure material suitability.

Specifications

Color Beige
Mixed Viscocity 3,000 cps
Cure Time 2 hours
Pot Life 20 minutes
Flexural Strength 5,900 psi
Flexural Modulus 433,000 psi
Specific Volume 17.3 cu. in./lb.
Specific Gravity 1.60 g/cc
Mix Ratio By Weight 1A:5B
Shrinkage 0.0006 in. / in.
Tensile Strength 3,100 psi
Elongation At Break 1 %
Shore D Hardness 85
Heat Deflection Temp 135 °F
Compressive Strength 8,500 psi
Tensile Modulus 400,000 psi
Compressive Modulus 400,000 psi
Available in Polyurethane Resin
Product Cure Time Specific Gravity Specific Volume Tensile Strength Tensile Modulus Compressive Strength Compressive Modulus Flexural Strength Shrinkage Heat Deflection Temp Elongation At Break Flexural Modulus Mixed Viscocity Mix Ratio By Volume Mix Ratio By Weight Pot Life Shore D Hardness Color Mixed Viscocity Cure Time Pot Life Flexural Strength Flexural Modulus Specific Volume Specific Gravity Mix Ratio By Weight Shrinkage Mix Ratio By Volume Tensile Strength Elongation At Break Shore D Hardness Heat Deflection Temp Compressive Strength Tensile Modulus Compressive Modulus
Smooth-Cast™ 300Q 5 min. 1.05 g/cc 26.4 cu. in./lb. 3,000 psi 139,500 psi 4,000 psi 45,800 psi 4,510 psi 0.01 in. / in. 120 °F 5 % 128,000 psi 80 cps 1A:1B 100A:90B 30 sec. 70 White 80 cps 5 min. 30 sec. 4,510 psi 128,000 psi 26.4 cu. in./lb. 1.05 g/cc 100A:90B 0.01 in. / in. 1A:1B 3,000 psi 5 % 70 120 °F 4,000 psi 139,500 psi 45,800 psi
Smooth-Cast™ 300 10 min. 1.05 g/cc 26.4 cu. in./lb. 3,000 psi 139,500 psi 4,000 psi 45,800 psi 4,510 psi 0.01 in. / in. 120 °F 5 % 128,000 psi 80 cps 1A:1B 100A:90B 3 min. 70 White 80 cps 10 min. 3 min. 4,510 psi 128,000 psi 26.4 cu. in./lb. 1.05 g/cc 100A:90B 0.01 in. / in. 1A:1B 3,000 psi 5 % 70 120 °F 4,000 psi 139,500 psi 45,800 psi
Smooth-Cast™ 305 30 min. 1.05 g/cc 26.4 cu. in./lb. 3,000 psi 134,000 psi 3,800 psi 44,900 psi 4,000 psi 0.0065 in. / in. 120 °F 7.5 % 118,000 psi 80 cps 1A:1B 100A:90B 7 min. 70 White 80 cps 30 min. 7 min. 4,000 psi 118,000 psi 26.4 cu. in./lb. 1.05 g/cc 100A:90B 0.0065 in. / in. 1A:1B 3,000 psi 7.5 % 70 120 °F 3,800 psi 134,000 psi 44,900 psi
Smooth-Cast™ 310 4 h. 1.05 g/cc 26.4 cu. in./lb. 3,000 psi 134,000 psi 3,800 psi 44,900 psi 4,000 psi 0.0065 in. / in. 120 °F 7.5 % 118,000 psi 80 cps 1A:1B 100A:90B 20 min. 70 White 80 cps 4 h. 20 min. 4,000 psi 118,000 psi 26.4 cu. in./lb. 1.05 g/cc 100A:90B 0.0065 in. / in. 1A:1B 3,000 psi 7.5 % 70 120 °F 3,800 psi 134,000 psi 44,900 psi
Smooth-Cast™ 385 2 h. 1.60 g/cc 17.3 cu. in./lb. 3,100 psi 400,000 psi 8,500 psi 400,000 psi 5,900 psi 0.0006 in. / in. 135 °F 1 % 433,000 psi 3,000 cps - 1A:5B 20 min. 85 Beige 3,000 cps 2 h. 20 min. 5,900 psi 433,000 psi 17.3 cu. in./lb. 1.60 g/cc 1A:5B 0.0006 in. / in. - 3,100 psi 1 % 85 135 °F 8,500 psi 400,000 psi 400,000 psi

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