Sinowon Precision Instrument Co., Ltd.

Hardness Testing of beryllium copper

Indenter hardness testing of beryllium copper is the most popular method. It is low cost, high speed, simple operation and requires the work-piece is small. Hardness testing used to control the quality of products, such as cold-working, solution annealing, quenching and harden.

Rockwell Testing

Rockwell Hardness testing includes more than 30 different methods according to loading force and indenter sharp. The most popular is Rockwell scales B and C, it usually does not test the beryllium copper, unless the thickness is more than 1mm, Scales B and C just for reference. It must apply Superficial Rockwell or Micro hardness to test the thin work-piece.

Table 1, Hardness Testing of beryllium copper

Superficial Rockwell Hardness testing uses Scales N and T, and load the testing force is 15kgf or 30kgf. The mini thickness of work-piece due to the materials for superficial Rockwell hardness tester, please check ASTM standard E18. As approximate value, use 30kgf for more than 0.6mm thickness work-piece, but 15kgf for 0.4mm thickness work-piece. For more thinness work-piece, we usually apply micro hardness testing.