标准编号：ISO 4955:2016
中文名称：耐热钢
英文名称：Heat-resistant steels
发布日期：2016-05
标准范围
This International Standard specifies requirements for the grades listed in Table 2, which areusually employed for products for which the resistance to the effects of hot gases and the products ofcombustion at temperatures in the region above 550°C and/or to long-term mechanical stress is themain requirement.NOTE 1 Grades mentioned in this International Standard may also be used for corrosion and creep resistantpurposes.This International Standard is applicable to the following:— flat products;— bars, sections, rod, semi-finished products and forgings.NOTE 2 Hammer-forged semi-finished products (blooms, billets, slabs, etc.), seamless rolled rings andhammer-forged bars are in the following, covered under semi-finished products or bars and not under the term“forgings”.NOTE 3 Not all of the grades included in this International Standard are necessarily available in allproduct forms.NOTE 4 In Table 2, two alloys are listed in addition to the steels since they belong to the heat resistant grades.NOTE 5 Heat resistant wire in the cold worked condition is covered by ISO 16143-3.NOTE 6 Corrosion resistant stainless steels for which resistance to corrosion is of primary importance arecovered by ISO 16143-1 and ISO 16143-2.NOTE 7 Heat-resistant steels for valves are covered by ISO 683-15.In addition to this International Standard, the general technical delivery requirements of ISO 404 areapplicable.
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