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NACE TM0103-2003

NACE TM0103-2003

$23.40

Laboratory Test Procedures for Evaluation of SOHIC Resistance of Plate Steels Used in Wet H2S Service

Published By Publication Date Number of Pages
NACE 2003-01-17 28
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This standard covers the testing of carbon steels for the evaluation of their susceptibility to cracking in aqueous hydrogen sulfide (H2S) environments by the phenomenon known as SOHIC. Tests for cracking in these environments are commonly conducted at room temperature where cracking susceptibility is typically high. However, other situations that can produce conditions that are more or less severe from the standpoint of corrosion, hydrogen permeation, and cracking severity than found in room-temperature tests may be present.

This standard specifies the reagents, test specimens, testing apparatus, base material and test specimen properties, test solutions, test procedures, and test specimen evaluation procedures for a NACE standard double-beam (DB) test for SOHIC. Sections 1 through 9 cover the DB test and focus on the evaluation of resistance of the material to through-thickness cracking in the presence of a tensile stress and a stress concentrator used to initiate cracking. Section 10 gives an alternative SOHIC test procedure using the existing NACE Standard TM0177 Method A (Tensile Test). This section provides additional requirements on the TM0177 Method A procedures for evaluation of SOHIC when time-to-failure data or a threshold stress approach is needed. Other recommended and optional procedures and related information that may be useful in the testing of carbon steels and weldments for SOHIC are given in Appendices A through D.

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NACE TM0103-2003
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