This standard specifies the method for the determination of the surface hardness of investment casting mold materials. This standard applies to the determination of the surface hardness of homogeneous molding materials for investment casting.
GB/T 14235.5-1993 history
2018GB/T 14235.2-2018 Low temperature pattern wax materials for investment casting—Part 2: Testing methods for usability properties
1993GB/T 14235.5-1993 Testing method for surface hardness of pattern materials in investment casting
GB/T 14235.5-1993 Testing method for surface hardness of pattern materials in investment casting was changed to GB/T 14235.2-2018 Low temperature pattern wax materials for investment casting—Part 2: Testing methods for usability properties.