Delrin® (Acetal Homopolymer - POM-H)

Delrin® (POM-H): The High-Strength Engineering Plastic. Precision-grade acetal for high-load, low-friction mechanical components.

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Delrin®

Delrin®, a high-crystalline acetal homopolymer, is the bridge between plastics and metals. It offers higher tensile strength, stiffness, and fatigue resistance than standard acetal copolymers (POM-C). It is specifically engineered for parts that require high dimensional stability and a low coefficient of friction.

Chemical Composition	Percentage %
Carbon	0.40%
Manganese	1.00%
Silicon	0.40%
Chromium	1.20%
Molybdenum	1.00%

Properties (°C)	Result	Unit	Parameter	Norm used
Modulus of Elasticity	2000	MPa	1 mm/min	DIN EN ISO 527-2
Tensile Strength	33	MPa	50 mm/min	DIN EN ISO 527-2
Tensile Strength at Yield	33	MPa	50 mm/min	DIN EN ISO 527-2
Elongation at Yield	5	%	50 mm/min	DIN EN ISO 527-2
Elongation at Break	65	%	50 mm/min	DIN EN ISO 527-2
Flexural Strength	54	MPa	2 mm/min	DIN EN ISO 178
Modulus of Elasticity (flex test)	1800	MPa	2 mm/min, 10 N	DIN EN ISO 178
Compression Strength	15/26	MPa	1%/2%. 5 mm/min, 10 N	DIN EN ISO 604
Compression Modulus	1600	MPa	5 mm/min, 10 N	EN ISO 604
Impact Strength (Charpy)	140	Kj/m^2	Max. 7,5j	DIN EN ISO 179-1EU
Notched Impact Strength (Charpy)	–	Kj/m^2	Max. 7,5j	DIN EN ISO 179-1EU
Ball Indentation Hardness	100	MPa	–	ISO 2039-1

Properties (°C)	Result	Unit	Parameter	Norm used
Glass Transition Temperature	-10	°C	–	DIN 53765
Melting Temperature	165	°C	–	DIN 53765
Service Temperature	140	°C	Short Term	–
Service Temperature	100	°C	Long Term	–
Thermal Expansion	13	10^-5 / K^-1	23-60°C Long	DIN EN ISO 11359-1;2
Thermal Expansion	14	10^-5 / K^-1	23-100°C Long	DIN EN ISO 11359-1;2
Specific Heat	–	J/(g+K)	–	ISO 22007-4:2008
Thermal Conductivity	–	W/(K+m)	–	ISO 22007-4:2008

Properties (°C)	Result	Unit	Parameter	Norm used
Surface Resistance	–	Ω	–	DIN IEC 60093

Properties (°C)	Result	Unit	Parameter
Water Absorption	0,01/0,02	%	24h/96h (23°C)
Resistance to Hot Mater/Bases	(+)	–	–
Resistance to Weathering	–	–	–
Flammability (UL94)	HB	–	According to

For 2767 tool steel, heat treatment parameters must be selected with careful consideration of the component’s shape, mass, and cross-sectional dimensions. Key process elements such as heating temperature, soaking period, and cooling rate are adjusted to suit the part geometry and the performance characteristics required in service. The final outcome is also influenced by supporting factors including furnace type, quenching medium selection, and the method used for safe and efficient workpiece transfer. To achieve optimal hardness, toughness, and structural consistency, consultation with qualified heat treatment professionals is strongly recommended.

Key Characteristics

High Mechanical Strength: Capable of handling high structural loads without permanent deformation.
Excellent Creep Resistance: Maintains its shape under constant stress over long periods.
Machinability: Known for its "free-machining" properties, producing small, clean chips and a superior surface finish.

Industrial Benefits

Moisture Absorption: Very low water absorption, ensuring dimensional accuracy in humid or wet environments.
Resilience: High impact resistance and toughness even at low temperatures.
Wear Resistance: Ideal for components subject to repeated sliding or rotational movement.

Applications

Precision gears, fuel system components, bushings, heavy-duty rollers, and mechanical fasteners.

Delrin® (Acetal Homopolymer - POM-H)

Delrin®

Key Characteristics

Industrial Benefits

Applications

PTFE (Teflon™)

NYLON 6/6