标准编号：ISO 15156-2:2020
中文名称：石油和天然气工业。石油和天然气生产中含H2S环境中使用的材料。第2部分：抗开裂碳钢和低合金钢以及铸铁的使用
英文名称：Petroleum and natural gas industries — Materials for use in H2S-containing environments in oil and gas production — Part 2: Cracking-resistant carbon and low-alloy steels, and the use of cast irons
发布日期：2020-11
标准范围
This document gives requirements and recommendations for the selection and qualification of carbon
and low-alloy steels for service in equipment used in oil and natural gas production and natural gas
treatment plants in H2S-containing environments, whose failure can pose a risk to the health and safety
of the public and personnel or to the environment. It can be applied to help to avoid costly corrosion
damage to the equipment itself. It supplements, but does not replace, the materials requirements of the
appropriate design codes, standards or regulations.
This document addresses the resistance of these steels to damage that can be caused by sulfide stress
cracking (SSC) and the related phenomena of stress-oriented hydrogen-induced cracking (SOHIC) and
soft-zone cracking (SZC).
This document also addresses the resistance of these steels to hydrogen-induced cracking (HIC) and its
possible development into stepwise cracking (SWC).
This document is concerned only with cracking. Loss of material by general (mass loss) or localized
corrosion is not addressed.
Table 1 provides a non-exhaustive list of equipment to which this document is applicable, including
exclusions.
This document applies to the qualification and selection of materials for equipment designed and
constructed using load controlled design methods. For design utilizing strain-based design methods,
see ISO 15156-1:2020, Clause 5.
Annex A lists SSC-resistant carbon and low alloy steels, and A.2.4 includes requirements for the use of
cast irons.
This document is not necessarily suitable for application to equipment used in refining or downstream
processes and equipment.
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