ASTM A SPECIFICATION FOR STEEL CASTINGS, SURFACE ACCEPTANCE STANDARDS, MAGNETIC PARTICLES AND LIQUID PENETRANT. ASTM AM _ 99 R03 by sekharsappa in Types > School Work and standard. Find the most up-to-date version of ASTM A/AM at Engineering
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A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval.
Within the text the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore each system must be used independently of the other. Combining values from the two systems may result in a nonconformance with this speci?
Only indications whose major dimension exceeds 1? Evaluation of Indications 6. However, false indications may be produced by localized surface irregularities, metallurgical discontinuities, or magnetic permeability variations.
Any indication in excess of the acceptance criteria which is believed to be false may be reexamined. Surface conditioning may precede reexamination. When agreed upon between the manufacturer and purchaser, the liquid penetrant method may be used to verify the presence of surface discontinuities which had awtm previously indicated by the magnetic particle method.
ASTM A AM() 钢铸件磁粉探伤和荧光渗透检验的表面验收标准_百度文库
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