Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: ASTM E1180-03
• Năm ban hành / Publication date: 2003
• Tình trạng / Status: W - Hết hiệu lực
• Tên tiếng Anh / Title in English: Standard Practice for Preparing Sulfur Prints for Macrostructural Examination
• Số trang / Page: 4
• Phạm vi áp dụng / Scope of standard: 1.1 This practice provides information required to prepare sulfur prints (also referred to as Baumann Prints) of most ferrous alloys to reveal the distribution of sulfide inclusions.1.2 The sulfur print reveals the distribution of sulfides in steels with bulk sulfur contents between about 0.002 and 0.40 weight percent.1.3 Certain steels contain complex sulfides that do not respond to the test solutions, for example, steels containing titanium sulfides or chromium sulfides.1.4 The sulfur print test is a qualitative test. The density of the print image should not be used to assess the sulfur content of a steel. Under carefully controlled conditions, it is possible to compare print image intensities if the images are formed only by manganese sulfides.1.5 The sulfur print image will reveal details of the solidification pattern or metal flow from hot or cold working on appropriately chosen and prepared test specimens.1.6 This practice does not address acceptance criteria based on the use of the method.1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see Section 9.