POM K300

Description

KOCETAL POM K300 by Kolon Plastics (Kolon Industries) is a general-purpose, medium-viscosity polyacetal polyoxymethylene copolymer grade that imparts good processability, high toughness, and high crystallinity and does not deflect over the heat deflection temperature. It possesses good mechanical strength, high stiffness, and good dimensional stability. It exhibits heat-, friction-, chemical-, oil, and wear resistance. It is suitable for processing by injection molding.

Specification

General
Material Status	Commercial: Active
Availability	Asia Pacific Europe Latin America North America
Features	General Purpose Medium Viscosity
Uses	General Purpose
RoHS Compliance	RoHS Compliant
Processing Method	Injection Molding

Physical	Nominal Value	Unit	Test Method
Density / Specific Gravity
--	1.41		ASTM D792
--	1.41	g/cm³	ISO 1183
Melt Mass-Flow Rate (MFR)
190°C/2.16 kg	9.0	g/10 min	ASTM D1238
190°C/2.16 kg	9.5	g/10 min	ISO 1133
Melt Volume-Flow Rate (MVR) (190°C/2.16 kg)	8.5	cm³/10min	ISO 1133
Molding Shrinkage
Flow	0.017 to 0.023	in/in	ASTM D955
--	1.8 to 2.2	%	ISO 294-4
Water Absorption
24 hr, 73°F	0.22	%	ASTM D570
Equilibrium, 73°F, 50% RH	0.22	%	ISO 62
Hardness	Nominal Value	Unit	Test Method
Rockwell Hardness (M-Scale)	80		ASTM D785, ISO 2039-2

Mechanical	Nominal Value	Unit	Test Method
Tensile Strength
Yield, 0.126 in³	8700	psi	ASTM D638
Yield	9280	psi	ISO 527-2/50
Tensile Strain
Yield	12	%	ISO 527-2/50
Break, 0.126 in³	40	%	ASTM D638
Break	30	%	ISO 527-2/50
Flexural Modulus
0.126 in³	363000	psi	ASTM D790
--⁴	384000	psi	ISO 178
Flexural Strength
0.126 in³	13600	psi	ASTM D790
--	12300	psi	ISO 178
Impact	Nominal Value	Unit	Test Method
Charpy Notched Impact Strength (73°F)	3.3	ft·lb/in²	ISO 179/1eA
Notched Izod Impact			ASTM D256
-22°F, 0.252 in	1.2	ft·lb/in
73°F, 0.252 in	1.6	ft·lb/in

Thermal	Nominal Value	Unit	Test Method
Deflection Temperature Under Load
264 psi, Unannealed	230	°F	ASTM D648
264 psi, Unannealed	203	°F	ISO 75-2/A
Melting Temperature	333	°F	ISO 11357-3, ASTM D1525
CLTE - Flow	7.2E-5	in/in/°F	ASTM D696

Electrical	Nominal Value	Unit	Test Method
Surface Resistivity	1.0E+14 to 1.0E+15	ohms	IEC 60093
Flammability	Nominal Value	Unit	Test Method
Flame Rating (0.031 in)	HB		UL 94

Injection	Nominal Value	Unit
Drying Temperature	176 to 194	°F
Drying Time	3.0 to 5.0	hr
Suggested Max Moisture	< 0.10	%
Rear Temperature	320 to 356	°F
Middle Temperature	338 to 374	°F
Front Temperature	356 to 392	°F
Nozzle Temperature	356 to 392	°F
Mold Temperature	140 to 176	°F

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