Delrin® 327UVE is a UV-stabilized medium-high viscosity acetal homopolymer with very low VOC emissions, developed for applications in automotive interiors. Processing methods include injection molding.
Polymer Name: Polyacetal Homopolymer (POM)
Processing Methods: Injection Molding, Extrusion
Additives Included: Mold Release Agent
Flexural Modulus: 3000.0 MPa
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Properties
Chemical Resistance
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Mechanical Properties
| Value | Units | Test Method / Conditions | |
| Tensile Modulus | 3000 | MPa | ISO 527-1/-2 |
| Yield Stress | 71 | MPa | ISO 527-1/-2 |
| Yield Strain | 20 | % | ISO 527-1/-2 |
| Flexural Modulus | 3000 | MPa | ISO 178 |
| Poisson's Ratio | 0.37 | - | - |
| Nominal Strain (at Break) | 40 | % | ISO 527-1/-2 |
| Flexural Stress (at 3.5%) | 82 | MPa | ISO 178 |
| Charpy Impact Strength (at 23°C) | 350 | kJ/m² | ISO 179/1eU |
| Charpy Impact Strength (at -30°C) | 290 | kJ/m² | ISO 179/1eU |
| Notched Charpy Impact Strength (at 23°C) | 10 | kJ/m² | ISO 179/1eA |
| Notched Charpy Impact Strength (at -30°C) | 9 | kJ/m² | ISO 179/1eA |
| Hardness (Rockwell Scale M) | 92 | - | ISO 2039-2 |
| Hardness (Rockwell Scale R) | 121 | - | ISO 2039-2 |
Typical Properties
| Value | Units | Test Method / Conditions | |
| Resin Identification | POM | - | ISO 1043 |
Thermal Properties
| Value | Units | Test Method / Conditions | |
| Melt Temperature (at 10°C/min) | 178 | °C | ISO 11357-1/-3 |
| Temperature of Deflection Under Load (1.8 Mpa) | 91 | °C | ISO 75-1/-2 |
| Temperature of Deflection Under Load (0.45 Mpa) | 165 | °C | ISO 75-1/-2 |
| Vicat Softening Temperature (at 50°C/H 10N) | 175 | °C | ISO 306 |
| Coefficient of Linear Thermal Expansion (Parallel) | 110 | E-6/K | ISO 11359-1/-2 |
| Coefficient of Linear Thermal Expansion (Normal) | 110 | E-6/K | ISO 11359-1/-2 |
| Specific Heat Capacity of Melt | 1960 | J/(kg K) | - |
| Specific Heat Capacity (Solid) | 1170 | J/(kg K) | - |
Flammability
| Value | Units | Test Method / Conditions | |
| FMVSS Class | B | - | ISO 3795 (FMVSS 302) |
| Burning Rate (at 1mm Thickness) | 52 | mm/min | ISO 3795 (FMVSS 302) |
Other Properties
| Value | Units | Test Method / Conditions | |
| Density | 1420 | kg/m³ | ISO 1183 |
Processing Information (Injection Molding)
| Value | Units | Test Method / Conditions | |
| Drying Recommended | yes | - | - |
| Drying Temperature | 80 | °C | - |
| Drying Time (Dehumidified Dryer) | 2 - 4 | h | - |
| Processing Moisture Content | max. 0.2 | % | - |
| Hold Pressure Range | 80 - 100 | MPa | - |
| Hold Pressure Time | 8 | s/mm | - |
| Annealing Temperature | 160 | °C | - |
| Melt Temperature (Optimum) | 205 | °C | - |
| Melt Temperature (Minimum) | 200 | °C | - |
| Melt Temperature (Maximum) | 210 | °C | - |
| Maximum Screw Tangential Speed | 0.2 | m/s | - |
| Mold Temperature (Optimum) | 90 | °C | - |
| Mold Temperature (Minimum) | 80 | °C | - |
| Mold Temperature (Maximum) | 100 | °C | - |
| Annealing Time (Optional) | 30 | min/mm | - |
VDA Properties
| Value | Units | Test Method / Conditions | |
| Emissions | max. 2 | mg/kg | VDA 275 |
Rheological Properties
| Value | Units | Test Method / Conditions | |
| Melt Volume-Flow Rate (at 190°C, 2.16 kg) | 6 | cm³/10min | ISO 1133 |
| Melt Mass Flow Rate (at 190°C, 2.16 kg) | 7 | g/10min | ISO 1133 |
| Mold Shrinkage (Parallel) | 2.2 | % | ISO 294-4, 2577 |
| Mold Shrinkage (Normal) | 1.9 | % | ISO 294-4, 2577 |
Chemical Resistance
| Chemical Type | Chemical Name | Resistance |
| Acids | Acetic Acid (5% by mass) (23°C) | Probably Resistant |
| Acids | Chromic Acid solution (40% by mass) (23°C) | Not Recommended |
| Acids | Citric Acid solution (10% by mass) (23°C) | Not Recommended |
| Acids | Hydrochloric Acid (36% by mass) (23°C) | Not Recommended |
| Acids | Lactic Acid (10% by mass) (23°C) | Not Recommended |
| Acids | Nitric Acid (40% by mass) (23°C) | Not Recommended |
| Acids | Sulfuric Acid (38% by mass) (23°C) | Not Recommended |
| Acids | Sulfuric Acid (5% by mass) (23°C) | Not Recommended |
| Alcohols | Ethanol (23°C) | Probably Resistant |
| Alcohols | Isopropyl alcohol (23°C) | Probably Resistant |
| Alcohols | Methanol (23°C) | Probably Resistant |
| Bases | Ammonium Hydroxide solution (10% by mass) (23°C) | Not Recommended |
| Bases | Sodium Hydroxide solution (1% by mass) (23°C) | Not Recommended |
| Bases | Sodium Hydroxide solution (35% by mass) (23°C) | Not Recommended |
| Ethers | Diethyl ether (23°C) | Probably Resistant |
| Hydrocarbons | iso-Octane (23°C) | Probably Resistant |
| Hydrocarbons | n-Hexane (23°C) | Probably Resistant |
| Hydrocarbons | Toluene (23°C) | Probably Resistant |
| Ketones | Acetone (23°C) | Probably Resistant |
| Mineral oils | Automatic hypoid-gear oil Shell Donax TX (135°C) | Not Recommended |
| Mineral oils | Hydraulic oil Pentosin CHF 202 (125°C) | Not Recommended |
| Mineral oils | Insulating Oil (23°C) | Probably Resistant |
| Mineral oils | Motor oil OS206 304 Ref.Eng.Oil, ISP (135°C) | Not Recommended |
| Mineral oils | SAE 10W40 multigrade motor oil (130°C) | Not Recommended |
| Mineral oils | SAE 10W40 multigrade motor oil (23°C) | Probably Resistant |
| Mineral oils | SAE 80/90 hypoid-gear oil (130°C) | Not Recommended |
| Other | 1% nonylphenoxy-polyethyleneoxy ethanol in water (23°C) | Probably Resistant |
| Other | 50% Oleic acid + 50% Olive Oil (23°C) | Probably Resistant |
| Other | Coolant Glysantin G48, 1:1 in water (125°C) | Not Recommended |
| Other | DOT No. 4 Brake fluid (120°C) | Not Recommended |
| Other | DOT No. 4 Brake fluid (130°C) | Not Recommended |
| Other | Ethyl Acetate (23°C) | Probably Resistant |
| Other | Ethylene Glycol (50% by mass) in water (108°C) | Not Recommended |
| Other | Hydrogen peroxide (23°C) | Not Recommended |
| Other | Phenol solution (5% by mass) (23°C) | Not Recommended |
| Other | Water (23°C) | Probably Resistant |
| Other | Water (90°C) | Not Recommended |
| Salt solutions | Sodium Carbonate solution (2% by mass) (23°C) | Not Recommended |
| Salt solutions | Sodium Carbonate solution (20% by mass) (23°C) | Not Recommended |
| Salt solutions | Sodium Chloride solution (10% by mass) (23°C) | Probably Resistant |
| Salt solutions | Sodium Hypochlorite solution (10% by mass) (23°C) | Not Recommended |
| Salt solutions | Zinc Chloride solution (50% by mass) (23°C) | Not Recommended |
| Standard Fuels | Diesel EN 590 (100°C) | Probably Resistant |
| Standard Fuels | Diesel fuel (pref. ISO 1817 Liquid F) (>90°C) | Not Recommended |
| Standard Fuels | Diesel fuel (pref. ISO 1817 Liquid F) (23°C) | Probably Resistant |
| Standard Fuels | Diesel fuel (pref. ISO 1817 Liquid F) (90°C) | Not Recommended |
| Standard Fuels | ISO 1817 Liquid 1 - E5 (60°C) | Probably Resistant |
| Standard Fuels | ISO 1817 Liquid 2 - M15E4 (60°C) | Probably Resistant |
| Standard Fuels | ISO 1817 Liquid 3 - M3E7 (60°C) | Probably Resistant |
| Standard Fuels | ISO 1817 Liquid 4 - M15 (60°C) | Probably Resistant |
| Standard Fuels | Standard fuel with alcohol (pref. ISO 1817 Liquid 4) (23°C) | Probably Resistant |
| Standard Fuels | Standard fuel without alcohol (pref. ISO 1817 Liquid C) (23°C) | Probably Resistant |
Regulatory & Compliance
Technical Details & Test Data
Stress vs Strain
Secant Modulus vs Strain
Tensile Modulus vs Temperature
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Delrin® 327UVE NC010
DuPont