POM Mitsubishi Iupital F20‑03

POM Mitsubishi Iupital® F20‑03（Thailand）

POM Mitsubishi F20‑03 is medium‑viscosity general‑purpose copolymer‑acetal(POM‑C) injection grade. Balanced mechanical performance, good dimensional‑stability, wide service‑temperature range, excellent wear‑resistance and chemical‑resistance, widely‑used universal grade for precision mechanical components。

Main Applications

Automotive: gears, bearings, transmission parts, fuel‑system components, seat‑belt parts, inner‑door handles, window‑regulator mechanisms. Electrical & electronic: electrical components, connectors, switch parts, structural & transmission parts for printer / copier OA‑equipment. Precision machinery & industrial components: high‑precision gears, bearings, cams, screws, levers, pulleys, sprockets, pipe‑valve parts with low‑friction & wear‑resistance requirement. Consumer goods: toys, sports‑equipment (ski‑board, sailing‑hardware), zippers, fasteners, lighters, thermostat‑timer components。

Physical‑Mechanical‑Thermal‑Electrical Properties

Property Category	Item	Test Standard	Value	Unit
Physical Properties	Density	ISO 1183 / ASTM D‑792	1.41	g/cm³
	Equilibrium water absorption(23 ℃, 50 %RH)	ISO 62 / ASTM D‑570	0.22	%
	MFR (190 ℃ / 2.16 kg)	ISO 1133 / ASTM D‑1238	9.0	g/10 min
	Molding shrinkage(flow,3 mm)	ASTM D‑955 / Internal	2.0	%
Mechanical Properties	Tensile yield strength	ISO 527‑2 / ASTM D‑638	61.0‑64.0	MPa
	Elongation at break	ISO 527‑2 / ASTM D‑638	30‑35	%
	Tensile modulus	ISO 527‑2	2900	MPa
	Flexural strength	ISO 178 / ASTM D‑790	87.0‑90.0	MPa
	Flexural modulus	ISO 178 / ASTM D‑790	2550‑2600	MPa
	Charpy notched impact 23 ℃	ISO 179/1eA	6.5‑7.0	kJ/m²
	Izod notched impact 23 ℃	ASTM D‑256	64	J/m
	Rockwell hardness M‑scale	ASTM D‑785	80	—
Thermal Properties	HDT (1.8 MPa)	ISO 75‑2/A / ASTM D‑648	100‑110	℃
	HDT (0.45 MPa)	ISO 75‑2/B / ASTM D‑648	156‑158	℃
	Melting temperature	ISO 11357‑3	165‑166	℃
	CLTE (flow direction)	ISO 11359‑2 / ASTM D‑696	1.1×10⁻⁴	cm/cm/℃
Electrical Properties	Volume resistivity	IEC 60093 / ASTM D‑257	1×10¹⁴	Ω·cm
	Surface resistivity	IEC 60093 / ASTM D‑257	1×10¹⁶	Ω
	Dielectric strength (3 mm)	IEC 60243‑1 / ASTM D‑149	19	kV/mm
	Dielectric constant (1 MHz)	ASTM D‑150 / IEC 60250	3.70‑3.90	—
	Dissipation factor (1 MHz)	ASTM D‑150 / IEC 60250	0.0070	—
Flammability	UL94 (0.8 mm)	UL 94	HB	—

Injection‑Molding Parameters

Process Stage	Parameter	Recommended Range	Unit	Remarks
Pre‑drying	Drying temperature	80‑100	℃	Drying recommended; avoid bubbles & silver‑streaks, improve dimension & surface quality。
	Drying time	3‑4	h
	Target moisture content	＜0.1‑0.2	%
Barrel temperature	Rear zone	170‑180	℃	Narrow thermal processing window. Melt temperature ≤220 ℃, overheat causes formaldehyde decomposition。
	Middle zone	180‑190	℃
	Front zone	190‑200	℃
	Nozzle temperature	180‑210	℃	Close to / slightly lower than front‑zone temperature to prevent drooling。
	Melt temperature	190‑210	℃
	Mold temperature	60‑80	℃	Higher mold‑temperature improves crystallization, gloss and reduces sink‑marks。
Injection parameters	Injection pressure	50‑100	MPa	Adjust by part geometry & wall‑thickness。
	Hold‑up pressure	—	MPa	Adequate hold‑pressure required to compensate shrinkage。
	Back pressure	Low value	MPa	High back‑pressure induces shear‑overheat degradation。
	Injection speed	Medium, multi‑stage	—	Too‑slow: flow marks; too‑fast: jetting & shear heat。
	Screw speed	80‑120	rpm	Avoid excessive rotational speed to reduce shear heat。
	Barrel residence time	＜20‑30	min	Keep residence time short to prevent thermal degradation。
Shutdown procedure	Short‑term stop	Cool barrel below 150	℃	Long‑term shutdown: fully purge barrel with PE / PP。
	Purge note	PE / PP	—	Must purge halogen‑containing polymers before POM processing to prevent violent chemical reaction。
Post‑treatment	Annealing (optional)	—	—	Relieve residual stress for high‑precision parts working under non‑ambient service condition。

Note: All data for reference only, subject to official TDS and COA。