ECISS/TC 28/SC 1 - Drop forgings

TC - Table 4, 3rd column, addition of "d"

TC - Table 4, 3rd column, addition of "d"

1.1 This European Standard specifies the dimensional tolerances for steel drop and vertical press forgings made under hammers and presses. The first part of this European Standard applies to hot forgings in the delivery condition, made in carbon and alloy steels. The tolerances specified apply to forgings not exceeding 250 kg in mass or 2 500 mm maximum dimension. Tolerances for heavier or larger forgings shall be agreed at the time of enquiry and order.

1.1 This European Standard specifies the dimensional tolerances for steel upset forgings made on horizontal forging machines. The second part of this European Standard applies to hot upset forgings, in the delivery condition, made in carbon and alloy steels. The tolerances specified apply to forgings not exceeding 250 kg in mass or 2 500 mm maximum dimension. Tolerances for heavier or layer forgings are subjected to negociation.

This European Standard specifies the general delivery conditions for steel closed die forgings. These forgings are produced by blow or pressure of the heated product at a suitable temperature (hot or warm) in a die, which in the forming process shapes the material to the form of the die. Similar products such as warm extrusions and upset forgings, are also regarded as part of the process.