By K. Yagi, G. Merckling, T.U. Kern, H. Irie, H. Warlimont
For environmental purposes it is important to extend the method temperature in energy vegetation and in undefined, e.g. in chemical crops. this means the improvement of steels and alloys that may be used at excessive temperatures and serious stipulations. those fabrics have to be able to enduring long term use. however, apparatus and crops in-built the Nineteen Seventies became elderly and their keep watch over calls for a excessive measure of accuracy to make sure their secure operation. accordingly, crucial estate of the fabrics is creep, specially long term creep, and therefore it will be important to guage and estimate long term creep power extra effectively. it's consequently a most sensible precedence to amass info and data approximately creep and to proportion the information.
This quantity incorporates a compilation of long term creep and rupture info and data in line with those facts on warmth resistant steels and superalloys, accrued by means of 3 major creep examine businesses and firms, particularly: ECCC (European Creep Collaborative Committee), GCC (German Creep Committee) and NIMS (National Institute for fabrics technological know-how) of Japan.
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Additional resources for Creep Properties of Heat Resistant Steels and Superalloys
C. Table 44. 5Mo steel tubes. 2% proof stress Elongation [MPa] [MPa] [%] STBA 23 ≥410 ≥205 ≥30 (JIS G3462) Reduction of area [%] - Fig. 70a - Fig. 5Mo steel tubes from room temperature to 650 °C. The solid line expresses the average level of the properties. 5Mo steel plates (see above). Although the reduction of area tends to become a little lower near 300 °C, it increases with temperature beyond 300 °C. Landolt-Börnstein New Series VIII/2B Ref. p. 2 % proof 700 600 Tensile strength [MPa] 65 500 400 300 200 100 600 500 400 300 200 100 0 0 0 100 200 300 400 500 600 700 0 100 200 Temperature [°C] 300 400 500 600 700 Temperature [°C] Fig.
1 High strength steel plates for pressure vessels Table 21. Chemical requirements of high strength steel plates; JIS SPV490  and ISO P500TQ  Chemical composition [wt%] Thickness Standards Designation Std. No. 2 High strength steel plates for general structures Table 22. Chemical requirements of high strength steel plates; JIS SM570, ASTM A678 C and A678 D  Chemical composition [wt%] Standards Designation Std. No. 3 Creep properties of high strength steel plates The database  contains creep data of high strength steel plates, namely rupture data, rupture elongation, reduction of area, microstructures of as-received materials and crept specimens.
5Mo steel plates. 100 100 80 80 Reduction of area [%] Elongation [%] 300 Temperature [°C] 60 40 60 40 20 20 0 0 0 100 200 300 400 500 600 700 Temperature [°C] Fig. 69c. 5Mo steel plate. Landolt-Börnstein New Series VIII/2B 0 100 200 300 400 500 600 700 Temperature [°C] Fig. 69d. 5Mo steel plates. 2 Low alloy steels Although the strong decrease of tensile strength is not indicated till about 400 °C, tensile strength decreases slightly near 100 °C and subsequently it increases slightly near 300 to 400 °C where it reaches a similar level as at room temperature.
Creep Properties of Heat Resistant Steels and Superalloys by K. Yagi, G. Merckling, T.U. Kern, H. Irie, H. Warlimont