SIS SS 11 11 16-1987 钢．非金属杂质含量评价方法，显微镜法非金属杂质含量评价Jernkontorets杂质图表II

标准号：SIS SS 11 11 16-1987
中文标准名称：钢．非金属杂质含量评价方法，显微镜法非金属杂质含量评价Jernkontorets杂质图表II
英文标准名称：Steel - Method for assessment of the content of non-metallic inclusions - Microscopic methods - Jernkontorets inclusion chart II for the assessment of non-metallic inclusions
发布日期：1987/6/25 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：This standard is applicable in the first place to the assessment of non-metallic inclusions in plastic formed steels.The method can also be applied to the assessment of inclusions in other wrought metallic materials with analogue distribution of inclusions and to cast and sintered steels.The following points shall be given in a product standard, or a delivery requirement, or be agreed between the parties.- assessment alternative- the size of the inclusions which shall be covered by the assessment- the diameter of the field of vision (when the frequency-method is used, see clause 7.2.1)- amount of inspection- position of sample surface in product- recording of results- any cleanness requirements on the steel to be tested