BASF Ultradur B 4520 PBT

Material attribute: Rapidly cooling

Package: 25 KG/Bag

Process: Injection molding

Melt flow index (MFI or MVR): 20 cm³/10min (at 250℃ 2.16kg)

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BASF Ultradur B 4520 PBT pellet Description

Ultradur B 4520 is a polybutylene terephthalate resin pellet (PBT material) produced by BASF. It contains no fillers and has a melt flow index of 19 cm³/10 min (at 250°C, 2.16 kg). Characterized by rapid cooling molding and laser welding capability, it is commonly used in the processing of office equipment components, coil skeletons, home appliance parts, and industrial components.

BASF Ultradur B 4520 PBT Advantage

Excellent machinability, BASF B 4520 PBT material exhibits a melt index of 20 cm³/10 min at 250°C and 2.16 kg in the test environment. It is suitable for injection molding processing equipment, with a viscosity index of 130 mL/g. This medium-viscosity material features rapid cooling properties and is compatible with most processing equipment, making it equally suitable for high-speed processing.
Automotive Association Certification Materials. BASF Ultradur B 4520 PBT material is certified by automotive associations and is used by multiple automakers including Ford, General Motors, Chrysler, and the PSA Group. It is an exceptionally high-performance engineering plastic material.
Exceptional electrical performance. BASF B4520 PBT has a volume resistivity of 1E14 ohm·m and a surface resistivity of 1E13 ohm·m. Its comparative tracking index (CTI) reaches 550 under Liquid A test standards, demonstrating excellent insulation properties. It finds extensive applications in electrical engineering and electronic equipment.
Good physical properties. BASF B 4520 PBT material exhibits excellent dimensional stability, with water absorption of only 0.5% at 23°C—significantly lower than polyamide materials. It is suitable for precision components requiring high dimensional accuracy. The thermal deformation temperature of BASF B 4520 PBT reaches 165°C under a 0.45MPa test environment, making it suitable for applications requiring high-temperature resistance.

Why choose Baiyou as BASF Ultradur B 4520 PBT pellets supplier?

Leading Polybutylene terephthalate resin pellets supplier (PBT material) , 20+ years of experience in plastic product manufacturing and chemical raw material import and export
Fastest Arrival, with warehouses in multiple ports
1,000+ types of resins are available, and we have cooperated with large petrochemical groups for 30+ years
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Wholesale price, even a piece of goods is based on the wholesale price

Key Attributes

BASF Ultradur B 4520 PBT
Product information
Manufacturer		BASF corporation
Other Certificates		RoHS REACH
Part Marking Code		>PBT material<
Color		Natural color
Material Shape		PBT Pellets
Viscosity		Medium viscosity
Flame retardant		HB
Specification		·EC 1907/2006(REACH) ·RoHS ·UL
Process		Injection molding
Molecular Weight		·CHRYSLER MS-DB-400 CPN3942 color: Non-matched color ·Ford WSB-M4D636-A2 ·FORD WSS-M4D259-C1 ·FORD WSS-M4D929-A2 ·GM QK 000489 Type A color: natural ·GM GMP.PBT.001 ·PSA Peugeot Citroen SPA X62 4136 color: 00110 black
Features		·Rapidly freezing ·Laser welding
Application		·Office applications ·Coil skeleton ·Appliance components ·Housing ·Sewing machines ·Business equipment
Physical properties	Standard	Value	Unit
Density	ASTM D1183	1300	kg/m³
Melt volume-flow rate MVR at 250℃ 2.16kg	ISO 1133	20	g/10min
Viscosity number	ISO 307,1157, 1628	130	cm³/g
Water absorption, equilibrium in water at 23℃	ISO 62	0.5	%
Moisture absorption, equilibrium 23℃/50% r.h.	ISO 62	0.25	%
Mold shrinkage (parallel)	ISO 294-4	1.70	%
Mold shrinkage (normal)	ISO 294-4	1.70	%
Flammability	Standard	Value	Unit
Burning behav. at thickness d = 1.5mm	IEC 60695-11-10	HB
Burning behav. at thickness d = 0.75mm	IEC 60695-11-10	HB
Automotive materials (thickness d ≥ 1mm)	ISO 3795,FMVSS 302
Flammability by electrical sources of ignition, Method BH d = 4mm	IEC 60695, UL94	HB
Burning behav. at thickness d = 0.75mm	IEC 60695, UL94	HB
Yellow card available	IEC 60695, UL94	yes
Yellow card available	IEC 60695, UL94	yes
Oxygen index	ISO 4589-1/-2	20	%
Glow wire flammability index, GWFI	IEC 60695-2-12	850(≤1.5)	℃(mm)
Glow wire flammability temperature, GWFI	IEC 60695-2-12	755(≤1.5)	℃(mm)
Mechanical behavior	Standard	Value	Unit
Tensile Modulus	ISO 527-1/-2	2400	MPa
Yield stress, 50mm/min	ISO 527-1/-2	55	MPa
Yield strain, 50mm/min	ISO 527-1/-2	3.7	%
Nominal strain at break, 50mm/min	ISO 527-1/-2	＞50	%
Tensile creep modulus, 1000 h, strain ≤0.5%, 23℃	ISO 899-1	1200	MPa
Charpy unnotched impact strength, 23℃	ISO 179/1eU	N	kJ/㎡
Charpy unnotched impact strength, -30℃	ISO 179/1eU	180	kJ/㎡
Charpy notched impact strength, 23℃	ISO 179/1eU	5	kJ/㎡
Charpy unnotched impact strength, -30℃	ISO 179/1eU	3	kJ/㎡
Flexural Modulus	ISO 178	2400	MPa
Flexural strength	ISO 178	95	MPa
Ball indentation hardness at 358 N and 30 s	ISO 2039-1	130	MPa
Izod notched impact strength, 23℃	ASTM D 256	50	J/m
Thermal	Standard	Value	Unit
Heat deflection temperature (HDT), 1.80MPa	ISO 75-1/-2	55	℃
Heat deflection temperature (HDT), 0.45MPa	ISO 75-1/-2	165	℃
Max. service temperature (short cycle operation)		200	℃
Temperature index at 50% loss of tensile strength after 20000h	ISO 60216	135	℃
Temperature index at 50% loss of tensile strength after 5000h	ISO 60216	145	℃
Coefficient of linear thermal expansion, longitudinal (23-55)℃	ISO 11359-1/-2	115	E-6/K
Coefficient of linear thermal expansion, transverse (23-55)℃	ISO 11359-1/-2	115	E-6/K
Thermal conductivity	DIN 52612-1	0.27	W(m K)
Specific heat capacity		1250	J(kg*K)
Processing	Standard	Value	Unit
Melt temperature, DSC	ISO 11357-1/-3	223	℃
Melting temperature, injection moulding/extrusion		250-275	℃
Mould temperature, injection molding		40-70	℃

⚠️The technical data sheet (TDS) of BASF Ultradur B 4520 PBT Polybutylene terephthalate resin (PBT material) from BASF corporation, if there are differences, please refer to the official website of BASF.

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