TY - CONF AU - Ma, Li AU - Low, Samuel AU - Song, Jun-Feng C2 - Proceedings of IMEKO TC3/TC5/TC20 Joint International Conference, Celle, 1, GE DA - 2002-01-01 00:01:00 LA - en PB - Proceedings of IMEKO TC3/TC5/TC20 Joint International Conference, Celle, 1, GE PY - 2002 TI - Comparison of Rockwell Hardness B (HRB) Tests Using Steel and Tungsten Carbide Ball Indenters ER -