Delrin® 988PA NC010 | POM ACETAL RESIN

Regional Availability

North America, Asia Pacific, South and Central America

Processing

Injection Moulding

Delivery form

Pellets

Additives

Lubricants, Release agent

Product Text

Common features of Delrin® acetal resins include mechanical and physical properties such as high mechanical strength and rigidity, excellent fatigue and impact resistance, as well as resistance to moisture, gasoline, lubricants, solvents, and many other neutral chemicals. Delrin® acetal resins also have excellent dimensional stability and good electrical insulating characteristics. They are naturally resilient, self-lubricating, and available in a variety of colors and speciality grades. 

Delrin® acetal resin typically is used in demanding applications in the automotive, domestic appliances, sports, industrial engineering, electronics, and consumer goods industries.

Delrin® 988PA is a low viscosity acetal homopolymer for injection molding with low screw deposit. It is especially formulated for gear applications requiring high precision and dimensional stability.

Injection molding

PREPROCESSING

Drying temperature = 80℃

Drying time, dehumidified dryer = 2-4 h

Processing moisture content = <0.2 %

PROCESSING

Melt temperature optimum = 215℃

Melt temperature range = 210-220℃

Mold temperature optimum = 90℃

Mold temperature range = 80-100℃

Hold pressure range = 90-110 MPa

Hold pressure time = 8-10 s/mm

POSTPROCESSING

Annealing: 30 min/mm at 160℃

PROPERTIES

Chemical Media Resistance

Acids

√ Acetic Acid (5% by mass) (23℃)

× Citric Acid solution (10% by mass) (23℃)

× Lactic Acid (10% by mass) (23℃)

× Hydrochloric Acid (36% by mass) (23℃)

× Nitric Acid (40% by mass) (23℃)

× Sulfuric Acid (38% by mass) (23℃)

× Sulfuric Acid (5% by mass) (23℃)

× Chromic Acid solution (40% by mass) (23℃)

Bases

× Sodium Hydroxide solution (35% by mass) (23℃)

× Sodium Hydroxide solution (1% by mass) (23℃)

× Ammonium Hydroxide solution (10% by mass) (23℃)

Alcohols

√ Isopropyl alcohol (23℃)

√ Methanol (23℃)

√ Ethanol (23℃)

Hydrocarbons

√ n-Hexane (23℃)

√ Toluene (23℃)

√ iso-Octane (23℃)

Ketones

√ Acetone (23℃)

Ethers

√ Diethyl ether (23℃)

Mineral oils

√ SAE 10W40 multigrade motor oil (23℃)

× SAE 10W40 multigrade motor oil (130℃)

× SAE 80/90 hypoid-gear oil (130℃)

√ Insulating Oil (23℃)

× Motor oil OS206 304 Ref.Eng.Oil, ISP (140℃)

× Automatic hypoid-gear oil Shell Donax TX (140℃)

× Hydraulic oil Pentosin CHF 202 (125℃)

Standard Fuels

√ ISO 1817 Liquid 1 (60℃)

√ ISO 1817 Liquid 2 (60℃)

√ ISO 1817 Liquid 3 (60℃)

√ ISO 1817 Liquid 4 (60℃)

√ Standard fuel without alcohol (pref. ISO 1817 Liquid C) (23℃)

√ Standard fuel with alcohol (pref. ISO 1817 Liquid 4) (23℃)

√ Diesel fuel (pref. ISO 1817 Liquid F) (23℃)

× Diesel fuel (pref. ISO 1817 Liquid F) (90℃)

× Diesel fuel (pref. ISO 1817 Liquid F) (>90℃)

√ Diesel EN 590 (85℃)

Salt solutions

√ Sodium Chloride solution (10% by mass) (23℃)

× Sodium Hypochlorite solution (10% by mass) (23℃)

× Sodium Carbonate solution (20% by mass) (23℃)

× Sodium Carbonate solution (2% by mass) (23℃)

× Zinc Chloride solution (50% by mass) (23℃)

Other

√ Ethyl Acetate (23℃)

× Hydrogen peroxide (23℃)

× DOT No. 4 Brake fluid (130℃)

× DOT No. 4 Brake fluid (120℃)

× Ethylene Glycol (50% by mass) in water (108℃)

× Coolant Glysantin G48, 1:1 in water (130℃)

√ 1% nonylphenoxy-polyethyleneoxy ethanol in water (23℃)

√ 50% Oleic acid + 50% Olive Oil (23℃)

√ Water (23℃)

× Water (90℃)

× Phenol solution (5% by mass) (23℃)

Symbols used:

√ possibly resistant

Defined as: Supplier has sufficient indication that contact with chemical can be potentially accepted under the intended use conditions and expected service life. Criteria for assessment have to be indicated (e.g. surface aspect, volume change, property change).

× not recommended - see explanation

Defined as: Not recommended for general use. However, short-term exposure under certain restricted conditions could be acceptable (e.g. fast cleaning with thorough rinsing, spills, wiping, vapor exposure).