This standard specifies the method for the determination of the acid value of investment casting molding materials. This standard applies to the determination of the acid value of various investment casting molding materials.
GB/T 14235.6-1993 history
2018GB/T 14235.1-2018 Low temperature pattern wax material for investment casting—Part 1: Testing methods for physical properties
1993GB/T 14235.6-1993 Testing method for acid number of pattern materials in investment casting
GB/T 14235.6-1993 Testing method for acid number of pattern materials in investment casting was changed to GB/T 14235.1-2018 Low temperature pattern wax material for investment casting—Part 1: Testing methods for physical properties.