标准编号：ISO 4992-2:2020
中文名称：钢铸件 超声波检验 第2部分：高强度组分钢铸件
英文名称：Steel castings — Ultrasonic testing — Part 2: Steel castings for highly stressed components
发布日期：2020-03
标准范围
This document specifies the requirements for the ultrasonic testing of steel castings (with ferritic
structure) for highly stressed components, and the methods for determining internal discontinuities by
the pulse-echo technique. Purchasers determine if components are highly stressed based on the need
for performance or safety.
This document applies to the ultrasonic testing of steel castings which have usually received a grain-
refining heat treatment and which have wall thicknesses up to and including 600 mm. For greater wall
thicknesses, special agreements apply with respect to the test procedure and the acceptance levels.
This document does not apply to austenitic steels and to joint welds.
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