Brimor Ceramix U529

Fortafix Ceramix U529 - High Temperature Strain Gauge Cement

Fortafix Ceramix U529 - High Temperature Strain Gauge Cement

Description.

Fortafix Ceramix U529 is the replacement product for Brimor U529. It is a smooth yellow paste, has a high bond strength, and produces a very hard and tenacious cement when finally cured.

Purpose and Application.

Fortafix Ceramix U529 is particularly suited to use on heat resistant steels and 'Nimonic' alloys, and when applied to these materials has an operating range up to temperatures of 750°C. It can however, be applied with equal facility to the low alloy steels, cast iron, and also to some non-ferrous metals such as brass, titanium, copper and aluminium alloys. In these cases the bond is not so effective as on to steel, due to the effects on cement/metal bonding or surface oxidation of the metal at elevated temperatures.

U529 is used in practice where a high degree of cement/metal adhesion is required - such as would be encountered where gauges are attached to gas turbine rotor components revolving at high speed and are subject to the effects of centrifugal load, gas erosion, and temperatures greater than 700°C.

Typically Used For

For attatching strain gauge devices on to heat resistant steels and 'Nimonic' alloys.

Suitable For

Thin films/Coating - Yes

Bonding - Yes

Encapsulation - No

Thick Sections - No

Property

Value

Major Constituent

Ready Mixed or 2 part

Ready Mixed (1 component)

Dispensable

Yes

Relative Viscosity

Coverage Rate/Coating Thickness

Softening Temperature (°C):

750°C

Melting Temperature (°C):

Wet Density (g.cm-3):

Colour:

Yellow

Compressive Strength:

Thermal Conductivity (W.m-1.K-1):

Thermal Expansion (x10-6C-1):

See table below

Dielectric Strength (KV.mm-1) @ RT:

Electrical Insulation Resistance:

See table below

pH:

Expansion on Setting %:

Shrinkage (Linear %): 150-500°C

Shrinkage (Volume %): 150-500°C

Hardness Moh’s Scale

Oxidation Resistance

Excellent

Alkali Resistance

Acid Resistance

Cure Guide

Water based product - (See below)

Shelf Life:

12 Months

Packaging:

100 gram bottle

Additional Information

Technical properties:

Electrical Insulation Resistance.

Temp (°C)

x 10 6 ohms

Details:

550

600

650

700

750

800

3.00

1.00

0.30

0.20

0.09

0.03

The measurements were made on a built-up wire strain gauge after running in at the top operational temperature. The resistance is low after initial baking on, but rises progressively with continued heating to the figure quoted.

Thermal Expansion

Figures of thermal expansion for 'Nimonic 75' are given for comparison. At 800°C, these almost coincide with those of the Fortafix Ceramix Cement.

Mean Value of Thermal Expansion (x 10 -6 /°C)

Temp (°C)

U529

Nimonic 75

Details:

20-200

20-400

20-600

20-800

11.1

13.7

19.6

16.0

13.0

13.8

14.7

15.5

Samples of size 0.25" square x 2" long (6.35mm 2 x 50.79mm). U529 exhibits quartz transformation at about 600°C, after which expansion is much less which accounts for the drop in the figures given for the last mean value over the range 20 - 800°C.

Application

See application data sheet

Curing

See application data sheet

Associated Documents

Instructions for Use of Fortafix U529

MSDS - Fortafix U529 Strain Gauge Cement