Nickel and nickel alloys — Rules for material description based on chemical symbols
Applies to the description of refined nickel as well as of wrought and cast nickel and nickel alloys. The description for nickel alloys shall consist of the chemical symbols of the base element (Ni) and the alloying elements, followed preferably by whole numbers indicating their amount (the chemical symbols being listed in decreasing order according to the nominal alloy contents). Varieties of an…
Draughting media for technical drawings — Draughting film with polyester base — Part 1: Requirements...
Specifies definitions as well as requirements for the following properties of film to be used as a medium for drawn and written information which it is possible to duplicate, revise and store: thickness, dimensional stability, permanent dimensional change, stability of form, adhesion, marking from metal objects, fold marks, surface resistance, visual density, draughting quality. In addition,…
Specifies general requirements for audiometers and particular requirements for pure-tone audiometers designed for use in determining hearing threshold levels in comparison with the standard reference threshold level by means of psycho-acoustic test methods. The contents of the corrigendum of February 1993 have been included in this copy.
Manganese ores and concentrates — Determination of hygroscopic moisture content in analytical sample...
The method is based on drying of an air-dried test portion to constant mass in a laboratory oven at 105 °C to 110 °C, and measurement of the loss in mass. The determination is intended to be carried out simultaneously with that of other constituents of the same analytical sample, so that the contents of the other constituents can be calculated on the basis of the absolutely dry ore. Should be…
