标准编号：ISO 20064:2019
中文名称：金属材料 钢- -K ca脆性裂纹抑制韧性测定的试验方法
英文名称：Metallic materials — Steel — Method of test for the determination of brittle crack arrest toughness, Kca
发布日期：2019-07
标准范围
This document specifies a test method for the determination of brittle crack arrest toughness.
It is applicable to ferritic steel base metals exhibiting ductile to brittle transition behaviour. Applicable
materials are rolled steel plates. It is intended for materials with a tensile strength of 950 MPa or less
and a test piece thickness of 200 mm or less. The range of arrest temperatures is between −196 °C and
+100 °C. This document can be applied to flat rolled steel plates but not to flattened steel pipes because
the flattening can cause changes in arrest toughness.
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