ISO 1083:2018 pdf free

ISO 1083:2018 pdf free.Spheroidal graphite cast irons一Classification
The following information shall be supplied by the purchaser:
a) the complete designation of the material;
b) any special requirements (including the relevant wall thickness, where necessary) that shall be agreed upon between the manufacturer and the purchaser by the time of acceptance of the order;
c) the number of this document, i.e. ISO 1083.
The method of producing spheroidal graphite cast irons and their chemical composition shall be left to the discretion of the manufacturer who shall ensure that the requirements of this document are met for the material grade specified in the order.
For ferritic to pearlitic cast iron grades, the level of the mechanical properties is determined by the ferrite to pearlite ratio. The ferrite to pearlite ratio is normally adjusted by alloying or, less commonly,by heat treatment.
For solid-solution strengthened cast iron grades, the level of the mechanical properties is determined by the extent of solid solution strengthening of the ferritic matrix. Solid-solution strengthening is normally governed by the silicon content.
For spheroidal graphite cast irons to be used in special applications, the chemical composition and heat treatment may be the subject of an agreement between the manufacturer and the purchaser.
All agreements between the manufacturer and the purchaser shall be made by the time of the acceptance of the order.
The property values apply to spheroidal graphite cast irons cast in sand moulds or moulds of comparable thermal behaviour. Subject to amendments to be agreed upon in the order, they can apply to castings obtained by alternative methods.
The material designation is based on the minimum mechanical properties obtained in cast samples with a thickness or diameter of 25 mm. The designation is irrespective of the type of cast sample.
Mechanical properties are wall thickness dependant as shown in Tables 1, 2 and 3.
For relevant wall thicknesses greater than 200 mm, the manufacturer and the purchaser shall agree on the minimum mechanical properties, the type and size of the cast sample, and microstructure requirements.
NOTE Tensile testing requires sound test pieces in order to guarantee pure uni-axial stress during the test.ISO 1083 pdf download.