DIN standards are developed by a non-profit organization serviced by 26,000 external experts representing all technical circles as voluntary delegates in more than 4,000 committees. More than 20,000 standards have been created and are reviewed every five years. Membership is voluntary and open to both German and foreign bodies. All German standards are preceded by the upper case letters DIN and followed by a numerical or alphanumerical code. An upper case letter sometimes precedes this code. German designations are reported in one of two methods. One method uses a descriptive code number with chemical symbols and numbers in the designation; the second, known as the Werkstoff number, uses numbers only with a decimal point after the first digit. (The latter method was devised to be more compatible with computerization.) DIN is a member of the European Committee for Standardization (CEN) and the International Standards Organization (ISO). Example: DIN 17440 -- X2CrNiMo18-14-3 or DIN EN10088 -- X12CrS13 (standard and name): or EN in the case of European Standards adopted as German Standard; DIN EN 10248 -- 1.0021 (standard and Werkstoff number). Examples: DIN 17440 -- X5CrNi18-10 or EN10088-2 -- X2CrNiMo17-12-3 (standard and name):or EN in the case of European Standards adopted as German Standard EN 10213-4 -- 1.4309 (standard and Werkstoff number).
Deutsches Institut fur Normung e.V. (DIN) (German Institute for Standardization)
|