You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.

    If you are an ASTM Compass Subscriber and this document is part of your subscription, you can access it for free at ASTM Compass

    A Study of Specimen Size Effects on the Initiation Toughness and Tearing Resistance of an A533B-1 Steel

    Published: 01 January 2002

      Format Pages Price  
    PDF (276K) 19 $25   ADD TO CART
    Complete Source PDF (9.2M) 493 $152   ADD TO CART

    Cite this document

    X Add email address send
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word


    This paper provides comparison of initiation toughness values and JR curve data for a series of geometrically scaled compact (CT) and single edge notched bend (SENB) geometry specimens taken from a well characterized A533B-1 pressure vessel steel. The CT specimens (W = 2B) were of thickness B = 100, 40, 20, 15, 12.5 & 10 mm, and SENB specimens (W = 2B and W = B) of B = 20, 10 & 5 mm. The data reported are multi-specimen J-Δa values obtained from a total in excess of 400 tests made at ambient temperature (20°C) and 288°C on both plain-sided and sidegrooved specimens. The findings of the work indicate that for the material under study there is little effect of specimen size or geometry on the initiation toughness for a given level of sidegrooving. It also indicates that small size specimens (i.e., W = 10, B = 5mm) can provide JR curve data equivalent to those obtained for the larger specimens for levels of J up to 600kJm-2 and crack extension Δa up to approximately 25% of their initial remaining ligament (40% for 20% side grooved specimens). Suggestions are made to relax the current specimen size validity limits. The results presented here encourage the use of SENB specimens possibly as small as 5 × 5 mm for the determination of initiation toughness in these materials


    Size, initiation toughness, J, 0.2, J, 0.2BL, tearing resistance, J, R, steel, A533B, compact (CT), single-edge notched bend (SENB)

    Author Information:

    Wardle, G
    Consultant Technologist, Serco Assurance, Warrington, Cheshire

    Committee/Subcommittee: E10.02

    DOI: 10.1520/STP10813S