Wellman Wellamid® MR259 22LH-N 25% Mineral Reinforced Nylon 66, Lubricated & Heat Stabilized

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Wellman Wellamid® MR259 22LH-N 25% Mineral Reinforced Nylon 66, Lubricated & Heat Stabilized (discontinued **)
Categories:	Polymer; Thermoplastic; Nylon (Polyamide PA); Nylon 66 (PA66); Nylon 66, 30% Mineral Filled
Material Notes:	Typical Applications: Lawn and garden equipment, automotive trim, bezels, wheel covers, window frames, gas tank filler housings, brackets, metalized lighting reflectors for automotive, automotive cooling fans & shrouds, automotive door handles, brackets, automotive mirror shells, painted parts, components for small gas engines, sporting goods, auto luggage rack components. Data provided by the manufacturer, Wellman Inc.
Key Words:	Polyamide 66
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Physical Properties	Metric	English	Comments

Density	1.31 g/cc	0.0473 lb/in³	ISO 1183
Water Absorption	0.60 %	0.60 %	Approximate 24 hr.
Linear Mold Shrinkage	0.012 - 0.016 cm/cm	0.012 - 0.016 in/in	ISO 294-4

Mechanical Properties	Metric	English	Comments
Tensile Strength, Ultimate	75.0 MPa	10900 psi	ISO 527
Elongation at Break	10 %	10 %	ISO 527
Flexural Yield Strength	115 MPa	16700 psi	ISO 178
Flexural Modulus	3.85 GPa	558 ksi	ISO 178
Izod Impact, Notched	0.600 J/cm	1.12 ft-lb/in	ISO 180

Thermal Properties	Metric	English	Comments
Deflection Temperature at 1.8 MPa (264 psi)	70.0 °C	158 °F	ISO 75
Flammability, UL94	HB @Thickness 1.57 mm	HB @Thickness 0.0618 in	From Wellman QC Laboratory Testing; UL 94

Processing Properties	Metric	English	Comments
Rear Barrel Temperature	282 - 304 °C	540 - 580 °F
Middle Barrel Temperature	277 - 299 °C	530 - 570 °F
Front Barrel Temperature	271 - 293 °C	520 - 560 °F
Nozzle Temperature	282 - 293 °C	540 - 560 °F
Melt Temperature	288 - 310 °C	550 - 590 °F
Mold Temperature	71.1 - 93.3 °C	160 - 200 °F
Drying Temperature	79.4 °C	175 °F	Opened bags and gaylord boxes
Dry Time	2 - 4 hour	2 - 4 hour	Opened bags and gaylord boxes
Moisture Content	0.050 - 0.20 %	0.050 - 0.20 %	During molding to prevent hydrolytic degradation
	<= 0.20 %	<= 0.20 %	In shipping bags, ready to mold
Injection Pressure	34.5 - 138 MPa	5000 - 20000 psi
Back Pressure	0.345 MPa	50.0 psi
Screw Speed	30 - 120 rpm	30 - 120 rpm

**
Materials flagged as discontinued () are no longer part of the manufacturer’s standard product line according to our latest information. These materials may be available by special order, in distribution inventory, or reinstated as an active product. Data sheets from materials that are no longer available remain in MatWeb to assist users in finding replacement materials.

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PWEL37 / 72317

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