Hardness is one of the important mechanical properties of metal materials, especially there is a heat-treatment requirement, hardness testing can effectively reflect the mechanical properties and performance of metal materials, which always enable products of SME MACH to meet our customer's requirements for the using purpose. Hardness can be tested by the following ways:

• Brinell hardness testing(HB),
• Rockwell hardness testing(HRC),
• Vickers hardness testing(HV),
• Leeb hardness testing(HL).