This standard specifies the Rockwell hardness test method for electric carbon products. This standard applies to physical and chemical performance testing of electric carbon products.
JB/T 8133.3-1999 history
2013JB/T 8133.3-2013 Test method for physical-chemical properties of electrical carbon product.Part 3:Rockwell hardness
1999JB/T 8133.3-1999 Test method for physical-chemical properties of electrical carbon product.Rockwell hardness