TUV Test Report for BONOSS Wheel Studs M14x1.5 Decarburization Test-hardness method/Retempering Test/Hardness Test (No: 01 220 CHN/T-2000115)

TUV Test Report for BONOSS Wheel Studs M14x1.5

Decarburization Test-hardness method: (Test Method: ISO 898-1:2013+Cor-1:2013)

Retempering Test: (Test Method: ISO 898-1:2013+Cor-1:2013)

Hardness Test: (Test Method: ISO 6507-1:2018)

No: 01 220 CHN/T-2000115

Grade:12.9

Material:SCM440