Youngs modulus test data for 14 MoV 6 3 material at 550 °C

This data collection consists of uniaxial creep, uniaxial tensile, and elastic modulus results from tests performed on low-alloy steels at FZ Jülich in the scope of COST 501/II/WP5 C. With COST 501 Round II Work Package 5 concerned with the prediction of residual lifetime under simulated service loads, the WP5 C sub-package was focused on steam pipe steels.In the scope of the WP5 C sub-package, creep rupture testing of 13CrMo 4 4 (1Cr0.5Mo0.25V) and 14MoV 6 3 (0.5Cr0.5Mo0.25V) steels in new (normalised and tempered) and service exposed conditions was carried out. The service conditions were 250 000 h at 525°C for 13CrMo 4 4 and 116 000 h at 530°C for 14MoV 4 4. The aims were to provide basic creep rupture data for the steels and to provide a series of test pieces with defined amounts of creep strain for non-destructive analysis of creep damage.For the short duration tests, the new materials were significantly stronger than the service exposed materials. With increasing test time the rupture strengths of the new and the service exposed material converged as stable microstructures were established.For the 13CrMoV 4 4 steel, the creep damage developed depended on the initial condition; new material exhibited creep pore formation after relatively low creep strains around 1 % whereas in the service exposed condition no cavitation after 10 000 h was observed. For the 14MoV 6 3 steel, creep damage was found in short duration tests of both new and service exposed material.