barcol hardness testing procedure
barcol hardness testing procedure-portable aluminum hardness tester Standard Durometro Barcol Hardness Tester for Aluminum alloys Copper
Applications:
934-1 for soft metals such as aluminum and its alloys,brass,copper, and some of the harder plastics and fiberglass. Approximate range 25 to 150 Brinell(10 mm ball 500 kg load).This unit meets American Society for Testing and Materials(ASTM) Standard D-2583.
Operating information:
1.The Impressor is best suited for testing homogeneous materials.Materials of granular.fibroud or coarse struture will produce a wide variation in hardness readings because of the small diameter of the ienter point.
2.For accurate readings,material should be atleast 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.
3.Simply exert a light pressure against the instrument to drive the spring-loaded indenter point into the material.The indenter point must be perpendicular to the surface being tested.
4.On very soft metals,the highest reading should be used since cold flow permits the spring-loaded indenter point to continue penetration.
