PU 8263, ABS-Like Material

Flame Retardant, UL94 V-0

Vacuum Casting Material

Description

PU 8263 is a flame retardant type polyurethane resin for vacuum casting application with the specific properties so far not obtainable with the prevailing urethane cast materials.

Well-balanced physical properties, difficult-inflammability and excellent dimensional stability of Hei-Cast 8263 makes it possible to apply this innovative product as a flame retardant type cast material for the manufacture of prototypes which require UL94 V-0 and 5VA specification and for the monitoring of mechanical strength of the molded parts. Hei-Cast 8263 is also suited for short run production.

Physical Properties

Item		Value	Remarks
Hardness	Type D	83	JIS K-7215
Tensile Strength	MPa	68	JIS K-7113
Elongation	%	15	JIS K-7113
Bending strength	MPa	93	JIS K-7171
Young’s modulus in flexure	MPa	2200	JIS K-7171
Impact strength	kJ/m²	10	JIS K-7110 Izod V Notch
Shrinkage	%	0.3	Inhouse specification
Heat Deflection Temperature	℃	80	JIS K-7207(1.80 MPa)
Coefficient of thermal expansion	/℃	8×10^-5	JIS K-6911
Flame retardance	UL-94	V-0	UL File Number E92376 Thickness 2.5mm
Flame retardance	UL-94	5VA	Thickness 3.0mm
Demold Time	Minute	60	Mold temp. :over 60℃

Physical properties vs. Temperature

Temperature℃	Bending strength (MPa)	Young’s modulus in flexture(MPa)	Impact strength (kJ/m²)
-20	122	2520	8.3
0	108	2410	9.4
20	95	2310	9.6
40	68	2030	12.2
50	60	1810	13.3
60	53	1630	12.6
70	38	1280	11.5
80	28	1080	11.8

Electrical Properties

Item		Unit or Terms	Value
Surface resistivity		Ω	9.9×10¹⁵
Volume resistivity		Ω・cm	1.1×10¹⁶
Breakdown voltage		KV/mm	14.8
CTI test		C.T.I.	600
Permittivity ε	60Hz	25℃	4.3
	60Hz	60℃	4.8
	100kHz	25℃	4.0
	100kHz	60℃	4.2
dielectric loss tangent tanδ	60Hz	25℃	0.018
	60Hz	60℃	0.065
	100kHz	25℃	0.023
	100kHz	60℃	0.024

Contact us to discuss your Flame Retardant, UL94 V-0 project and discover how vacuum casting can meet your needs.

Our vacuum casting services deliver durable prototypes and low-volume parts.