Gasket 300HV relative to what material?
Due to the standard for the 100HV, 140HV flat washers can be made of low carbon steel. General enterprises in the selection of materials, most of the materials used in Baosteel, easy to cold stamping
For the 200HV and 300HV level should choose 45, 50, 60, 70 steel or 65Mn steel, heat treatment can be quenched and tempered to reach the technical requirements of 200 ~ 300HV and 300 ~ 400HV
For the 140HV level can choose 08F, 08Al and 10, 10F, etc., the surface hardness can reach about 140HV
For the 100HV level can choose ST12, ST13 and Q235, Q215, Q195, etc., the surface hardness can reach about 110HV
Gasket 300HV relative to the usual selection of 45, 50, 60, 70 steel or 65Mn steel.
