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The Barcol Impressor

A Hand-Held Portable Hardness Tester

Models GYZJ934-1, GYZJ935, GYZJ936

Meets ASTM D2583; MIL-P-17549-C (SHIPS)

 

Barcol Hardness Tester
Barcol Hardness Impressor

Applications

    • Fiberglass
    • Aluminum
    • Aluminum Alloys
    • Soft Metals
    • Plastics
Portable
The Impressor is a convenient tool for testing the hardness of aluminum, aluminum alloys, copper, brass and other materials including plastics and fiberglass. The instrument is designed for use on fabricated parts and assemblies as well as on raw stock.

 

Easy to Use

No experience required; can be used in any position and in any space that will allow for the operator’s hand. The hardness reading is instantly indicated on the dial, which is divided into one hundred graduations. No waiting, preloading or separate measurements.


Lightweight

The Impressor weighs only 1 lb. 2 oz. and comes complete with carrying case, adjusting wrench and two spare indenters.


Three Models Available
GYZJ 934-1 Use this model for fiberglass, soft metals such as aluminum and its alloys, brass, copper, and some of the harder plastics and fiberglass. Approximated range 25 to 150 Brinell (10mm ball 500 KG load). This unit meets American Society for Testing and Material (ASTM) Standard D-2583.
GYZJ 935 Use this Model for the softer plastics and very soft metals. Approximate range 50 to 110 Rockwell "R".
GYZJ 936 Use this Model for extremely soft materials such as lead, linoleum and leather.


Testing Instructions

The Impressor is best suited for testing homogeneous materials. Material of granular, fibrous or coarse structure will produce a wide variation in hardness readings because of the small diameter of the indenter point.

For accurate readings, material should be at least 1/32" thick and large enough for a minimum distance of 1/8" in any direction from the indenter point to the edge of the specimen. The testing area should be smooth and free from mechanical damage.

Simply exert a light pressure against the instrument to drive the spring-loaded indenter into the material. The indenter must be perpendicular to the surface being tested. On very soft metal, the highest reading should be used since cold flow permits the spring-loaded indenter to continue penetration.

Barcol Impressor with Carry Case
Barcol Tester with Case
Note:  Physical characteristics of very soft materials are such that uniform correlation between different hardness measuring systems cannot be established. For this reason, no conversion curves are offered for the 935 and 936 models. We recommend that Impressor hardness limits for each material be established by test.



Model Features& Dimensions

Drawing of Barcol Tester With Dimensions
Barcol Impressor with Dimensions

 

Barcol Drawing Barcol Drawing Barcol Drawing
Barcol Drawing Barcol Drawing Barcol Drawing
Barcol Drawing Barcol Drawing Barcol Drawing
Detail Drawing of Barcol Tester



Available Items
All Impressors come equipped with carrying case, adjusting wrench and two spare indentors.
Item Number Item
 HA-GYZJ934-1 Barber-Coleman Impressor
 HA-GYZJ935 Barber-Coleman Impressor
 HA-GYZJ936 Barber-Coleman Impressor
We also offer a large selection of parts for Barber Coleman Impressors, please contact us for more information.

 

Home   Hardness    How To Order   Top Of The Page Paul N. Gardner Company, Inc. • Phone 1.800.762.2478 • Fax 954.946.9309