Delrin® 311DP is a medium-high viscosity acetal homopolymer with enhanced crystallization for faster cycle times and excellent creep and fatigue resistance. It has improved thermal stability, excellent dimensional stability, low warpage and fewer voids.
Polymer Name: Polyacetal Homopolymer (POM)
Processing Methods: Injection Molding, Extrusion
Additives Included: Mold Release Agent, Lubricant (Unspecified)
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Identification & Functionality
Additives Included
Polymer Name
Plastics & Elastomers Functions
Technologies
Product Families
Delrin® 311DP BK402 Features & Benefits
Applications & Uses
Markets
Applications
Plastics & Elastomers End Uses
Plastics & Elastomers Processing Methods
Properties
Chemical Resistance
Color
Flame Rating
Part Marking Code
Mechanical Properties
| Value | Units | Test Method / Conditions | |
| Tensile Modulus | 3300 | MPa | ISO 527-1/-2 |
| Yield Stress | 75 | MPa | ISO 527-1/-2 |
| Yield Strain | 15 | % | ISO 527-1/-2 |
| Poisson's Ratio | 0.37 | - | - |
| Nominal Strain (at Break) | 28 | % | ISO 527-1/-2 |
| Notched Charpy Impact Strength (at 23°C) | 9 | kJ/m² | ISO 179/1eA |
| Notched Charpy Impact Strength (at -30°C) | 8 | kJ/m² | ISO 179/1eA |
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) | 103 | °C | ISO 75-1/-2 |
| Relative Thermal Index (Electrical, 0.75mm) | 50 | °C | UL 746B |
| Relative Thermal Index (Electrical, 1.5mm) | 110 | °C | UL 746B |
| Relative Thermal Index (Electrical, 3mm) | 110 | °C | UL 746B |
| Relative Thermal Index (Impact, 0.75mm) | 50 | °C | UL 746B |
| Relative Thermal Index (Impact, 1.5mm) | 85 | °C | UL 746B |
| Relative Thermal Index (Impact, 3mm) | 90 | °C | UL 746B |
| Relative Thermal Index (Strength, 0.75mm) | 50 | °C | UL 746B |
| Relative Thermal Index (Strength, 1.5mm) | 90 | °C | UL 746B |
| Relative Thermal Index (Strength, 3mm) | 95 | °C | UL 746B |
Flammability
| Value | Units | Test Method / Conditions | |
| FMVSS Class | B | - | ISO 3795 (FMVSS 302) |
| Burning Behavior (at 1.5mm Nominal Thickness) | UL94 HB | class | IEC 60695-11-10 |
| Burning Behavior (at 0.8mm Thickness) | UL94 HB | class | IEC 60695-11-10 |
| Burning Rate (at 1mm Thickness) | max. 80 | mm/min | ISO 3795 (FMVSS 302) |
Other Properties
| Value | Units | Test Method / Conditions | |
| Density | 1420 | kg/m³ | ISO 1183 |
Processing Information (Extrusion)
| Value | Units | Test Method / Conditions | |
| Melt Temperature Range | 195 - 205 | °C | - |
| Melt Temperature (Optimum) | 200 | °C | - |
| Drying Time (Dehumidified Dryer) | 2 - 4 | h | - |
| Drying Temperature | 75 - 85 | °C | - |
| Processing Moisture Content | max. 0.2 | % | - |
Processing Information (Injection Molding)
| Value | Units | Test Method / Conditions | |
| Drying Temperature | 80 | °C | - |
| Drying Recommended | yes | - | - |
| Drying Time (Dehumidified Dryer) | 2 - 4 | h | - |
| Processing Moisture Content | max. 0.2 | % | - |
| Hold Pressure Range | 80 - 100 | MPa | - |
| Hold Pressure Time | 7.5 | s/mm | - |
| Annealing Temperature | 160 | °C | - |
| Melt Temperature (Optimum) | 215 | °C | - |
| Melt Temperature (Minimum) | 210 | °C | - |
| Melt Temperature (Maximum) | 220 | °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. 8 | mg/kg | VDA 275 |
Rheological Properties
| Value | Units | Test Method / Conditions | |
| Melt Mass Flow Rate (at 190°C, 2.16 kg) | 7 | g/10min | ISO 1133 |
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 | Insulating Oil (23°C) | Probably Resistant |
| 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 | 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 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
Certifications & Compliance
OEM Standards
Technical Details & Test Data
Stress vs Strain
Secant Modulus vs Strain
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Delrin® 311DP BK402
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