Hydex ^® 4101 PBT-P
(PolyButylene Teraphalate Polyester) Specifications

TECHNICAL DESCRIPTION

Hydex ^® 4101 is manufactured from PolyButylene Terephthalate polyester (PBT-P) resin. It is a semi-crystalline thermoplastic. This material is manufactured from Celanex ^® resin.

GENERAL PROPERTIES

Hydex ^® 4101 offers excellent mechanical properties combined with good chemical resistance. PBT-P has good impact resistance and toughness, low coefficient of friction & wear, and does not need lubrication. It also is resistant to chemicals, chlorine, water, and steam.

Hydex ^® 4101 is available in FDA-approved white and non-FDA black colors.

Hydex ^® 4101L is an internally-lubricated version designed for use in higher wear resistance, PV range and lower coefficient of friction applications.

Both Hydex ^® 4101 and 4101L are approved for direct food contact (FDA, USDA, and 3A Dairy compliant).

KEY PROPERTIES
• No center line porosity • Superior chemical resistance • Low coefficient of friction • Good impact strength and ductility • Hard and durable surface • FDA, USDA, 3A Dairy approved grades • Replaces brass, aluminum, steel, UHMW, acetal

TYPICAL APPLICATIONS
• Food piston pumps • Valves and valve bodies • Feeder blocks • Timing screws • Gears • Cams • Bushings and bearings • Wear strips • Fuel pump components • Fuel system connectors and rotors

TYPICAL PROPERTIES of HYDEX ® 4101 PBT-P
ASTM or UL test	Property	Hydex ® 4101	Hydex ® 4101L
PHYSICAL
D792	Density (lb/in³) (g/cm³)	0.047 1.31	0.049 1.36
D570	Water Absorption, 24 hrs (%)	0.07	0.07
MECHANICAL
D638	Tensile Strength (psi)	9,400	7,200
D638	Tensile Modulus (psi)	425,000	380,000
D638	Tensile Elongation at Break (%)	50	40
D790	Flexural Strength (psi)	11,600	10,600
D790	Flexural Modulus (psi)	420,000	390,000
D695	Compressive Strength (psi)	11,000	11,000
D695	Compressive Modulus (psi)	-	-
D785	Hardness, Rockwell	R120	R110
D256	IZOD Notched Impact (ft-lb/in)	0.7	0.7
THERMAL
D696	Coefficient of Linear Thermal Expansion (x 10 -5 in./in./°F)	4.5	5.0
D648	Heat Deflection Temp (°F / °C) at 264 psi	200 / 93	195 / 89
D3418	Melting Temperature (°F / °C)	420 / 215	420 / 215
-	Max Operating Temp (°F / °C)	221 / 105	221 / 105
C177	Thermal Conductivity (BTU-in/ft²-hr-°F) (x 10 -4 cal/cm-sec-°C)	- -	- -
UL94	Flammability Rating	HB	HB
ELECTRICAL
D149	Dielectric Strength (V/mil) short time, 1/8" thick	410	-
D150	Dielectric Constant at 60 Hz	3.3	-
D150	Dissipation Factor at 60 Hz	0.002	-
D257	Volume Resistivity (ohm-cm)at 50% RH	4.5 x 10 16	-

NOTE: The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers' complete material property datasheets.
All values at 73°F (23°C) unless otherwise noted.

HYDEX is a registered trademark of A.L. Hyde Company.
CELANEX is a registered trademark of Celanese AG Ticona.