TTEST procedure

Ttest procedures A minimum of five specimens shall be prepared in accordance with the relevant material standard. When none exists, or unless otherwise specified, specimens shall be directly compression or injection molded in accordance with ISO 293 or ISO 294-1. A minimum of five test specimens shall be prepared by machining operations or die cutting the materials in sheet, plate, slab, or similar form. Specimens can also be prepared by injection or compression molding the material to be tested. 

Ttest procedures Maximum permissible frictional loss without specimen 0.02% for 0.5 to 5.0 J pendulum 0.04% for 7.5 J pendulum 0.05% for 15.0 J pendulum 0.10% for 25.0 J pendulum 0.20% for 50.0 J pendulum Windage and friction correction are not mandatory, however, a method of determining these values is given. 

Ttest procedures Sample mass of 10-20 mg is satisfactory. Sample weight of 10-20 mg is recommended. 

Ttest procedures Immersion in transformer oil in accordance with IEC60296. Immersion in mineral oil, meeting D3487 t5fpe I or II requirements. 

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