POLYACETAL SHEETS AND RODS

POM Sheets plastic is a semi crystalline thermoplastic with high mechanical strength and rigidity

Due to its low moisture absorption rate, Acetal’s physical properties remain constant in every environment, resulting in an ideally suited and stable product for close tolerance mechanical parts and electrical insulators of Delrin Machined Parts.

A distinction is made between acetal homopolymers (POM-H - mainly manufactured from DuPont Delrin®) and acetal copolymers (POM-C) in regard to their properties. Due to its higher crystallinity, the properties of POM H include a slightly higher density, hardness and strength. POM C material, however, has higher chemical resistance and a lower melting point than POM H.

POM-C rods are appropriate for:
POM-C spring components, bushings, gears, cam disc (eccentric), cam discs and ratchet mechanisms, sliding components, electrical insulators, valves, major precision components, various components and details that work long under water at t ° 60-80 ° C .

Characteristics of Polyacetal

Specification :

Stock Shape	Colour	Size Range	Dimensions
POM Rods (Round)	Natural (White), Black + 14 Colours	Diameter : 4mm to 300mm	Length : Upto 3000mm
POM Rods (Square)	Natural (White) & Black	25mm x 25mm to 100mm x 100mm	Length : Upto 2000mm
POM Sheets	Natural (White) & Black	Thickness : 1mm to 120mm	Width : 620mm/1000mm Length : Upto 3000mm

ALL SIZES AVAILABLE AS PER CUT SIZE ALSO AND FULL SHEET ALSO

Mechanical Properties :

MECHANICAL PROPERTIES	VALUE	UNIT	PARAMETER	NORM
Tensile strength at yield	57	MPa	50mm/min	DIN EN ISO 527-2
Tensile strength	57	MPa	50mm/min	DIN EN ISO 527-2
Modulus of elasticity (tensile test)	2900	MPa	1mm/min	DIN EN ISO 527-2
Notched impact strength (Charpy)	4	kJ/m2	max. 2J	DIN EN ISO 179-1eA
Elongation at break	15	%	50mm/min	DIN EN ISO 527-2
Flexural strength	82	MPa	2mm/min, 10 N	DIN EN ISO 178
Modulus of elasticity (flexural test)	2700	MPa	2mm/min, 10 N	DIN EN ISO 178
Compression strength	30	MPa	1% / 2%	EN ISO 604
Ball indentation hardness	141	MPa		ISO 2039-1
Compression modulus	2300	MPa	5mm/min, 10 N	EN ISO 604
Impact strength (Charpy)	56	kJ/m2	max. 7,5J	DIN EN ISO 179-1eU
Elongation at yield	11	%	50mm/min	DIN EN ISO 527-2

Thermal Properties

THERMAL PROPERTIES	VALUE	UNIT	PARAMETER	NORM
Service temperature	100	C	long term	NN
Service temperature	140	C	short term	NN
Glass transition temperature	-60	C		DIN EN ISO 11357
Melting temperature	168	C		DIN EN ISO 11357

Electrical Properties

ELECTRICAL PROPERTIES	VALUE	UNIT	PARAMETER	NORM
surface resistivity	1014	O	Silver electrode, 23°C, 12% r.h.	DIN IEC 60093
volume resistivity	1013	O*cm	Silver electrode, 23°C, 12% r.h.	DIN IEC 60093