Phenolic Cotton (SRBF)

A wide range of applications in the electrical field.

Phenolic Cotton SRBF
Phenolic Cotton SRBF
LAMTUF F1

Manufactured from a fine weave scoured cotton fabric. Has good electrical and mechanical properties and can be machined to a fine finish. Suitable for small and intricate machined items. Sheets are supplied as per tolerance specified in ISO:2036.


LAMTUF F1 GRAPHITE

Manufactured from a fine weave scoured cotton fabric. Contains graphite. Has good mechanical properties and is self-lubricating. Can be machined to a fine finish. Used only for mechanical applications, not for electrical use.


LAMTUF F2

Manufactured from a medium weave scoured cotton fabric. Has good machining and punching properties and resistance of chemicals. Suitable for small machined parts. Sheets are supplied as per tolerance specified in ISO:2036.


LAMTUF F3

Manufactured from a coarse weave cotton fabric. A strong and tough material with good machining properties. Suitable for heavy duty gears and other applications requiring high impact strength. Sheets can be supplied up to 150mm thick. Supplied as per tolerance specified in ISO:2036.


MICARTA NP342HTBN

A high performance composite manufactured from a fine weave cotton fabric. Retains high strength at elevated temperatures, up to 125°C continuously. Excellent impact and bond strength, machines cleanly, engineered not to shrink. Used in power generator applications and the air power industry. Tested and passes General Electric's specification; A50A341.


SPAULDITE ARC2

A high performance composite manufactured from a medium weave cotton canvas. Blister free at higher temperatures, good wear resistance and high strength. Contains molybdenum disulfide lubricant in a proprietary temperature resistant resin capable of up to 145°C continuously and 200°C intermittently. Very low moisture absorption. Not for electrical applications.

Technical Data

This data, while believed to be accurate and based on reliable analytical methods, is for informational purposes only. Data supplied above are "Typical Values", not to be considered "Specification Values".

Product Units LAMTUF F1 LAMTUF F2 LAMTUF F3
STANDARD BS2572 F1 F2 F3
STANDARD IEC60893-3-4 PFCC203 PFCC203 PFCC201
STANDARD DIN7735 HGW2083
Mechanical
TENSILE STRENGTH Kgf/cm2 780 700 700
FLEXURAL STRENTH Kgf/cm2 1475 1275 1300
SHEAR STRENGTH Kgf/cm2 740 745 735
IMPACT - CHARPY Kg/m2 8 9 10
SPECIFIC GRAVITY 1.35 1.35 1.35
WATER ABSORPTION 3mm mg 201 201 220
ELECTRICAL
INSULATION RESISTANCE
In water 24hrs @ 20°C Meg Ohms 25 150 5000
ELECTRICAL STRENGTH
In oil @ 90°C
Flatwise (3mm) kv/mm 3 7.6 8.5
Edgewise (3mm) kv 5 30 40
TERMINAL CLASSIFICATION E (120) E (120) E (120)

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