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ASTM B 499

Standard Test Method for Measurement of Coating Thicknesses by the Magnetic Method: Nonmagnetic Coatings on Magnetic Basis Metals

Số trang: 5
Ngày phát hành: 2009-00-00

Liên hệ
1.1 This test method covers the use of magnetic instruments for the nondestructive measurement of the thickness of nonmagnetic coatings over ferrous or other magnetic base metals. It is intended to supplement manufacturers' instructions for the operation of the instruments and is not intended to replace them. Note 1 -Autocatalytically deposited nickel-phosphorus alloys containing more than 8 % phosphorus are sufficiently nonmagnetic to be measured by this test method, as long as the measurement is made prior to any heat treatment. 1.2 These instruments measure either the magnetic attraction between a magnet and the basis metal, as influenced by the presence of the coating (categorized as "magnetic pull-off"), or the change in magnetic-flux density within the probe (categorized as "electronic"). These instruments cannot distinguish the thickness of individual layers. They can only measure the cumulative thickness of all layers beneath the probe down to the base metal. 1.3 Measurements made in accordance with this test method will be in compliance with the requirements of ISO International Standard 2178 as printed in 1982. 1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.5 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.
Số hiệu tiêu chuẩn
ASTM B 499
Tên tiêu chuẩn
Standard Test Method for Measurement of Coating Thicknesses by the Magnetic Method: Nonmagnetic Coatings on Magnetic Basis Metals
Ngày phát hành
2009-00-00
Trạng thái
Có hiệu lực
Tiêu chuẩn tương đương
Tiêu chuẩn liên quan
Thay thế cho
ASTM B 499 (1996)
Standard Test Method for Measurement of Coating Thicknesses by the Magnetic Method: Nonmagnetic Coatings on Magnetic Basis Metals
Số hiệu tiêu chuẩn ASTM B 499
Ngày phát hành 1996-00-00
Mục phân loại 17.040.20. Tính chất bề mặt
Trạng thái Có hiệu lực
Thay thế bằng
Lịch sử ban hành
ASTM B 499 (2009)
Standard Test Method for Measurement of Coating Thicknesses by the Magnetic Method: Nonmagnetic Coatings on Magnetic Basis Metals
Số hiệu tiêu chuẩn ASTM B 499
Ngày phát hành 2009-00-00
Mục phân loại 17.040.20. Tính chất bề mặt
Trạng thái Có hiệu lực
* ASTM B 499 (1996)
Standard Test Method for Measurement of Coating Thicknesses by the Magnetic Method: Nonmagnetic Coatings on Magnetic Basis Metals
Số hiệu tiêu chuẩn ASTM B 499
Ngày phát hành 1996-00-00
Mục phân loại 17.040.20. Tính chất bề mặt
Trạng thái Có hiệu lực
* ASTM B 499 (1988)
Test Method for Measurement of Coating Thicknesses by the Magnetic Method: Nonmagnetic Coatings on Magnetic Basis Metals
Số hiệu tiêu chuẩn ASTM B 499
Ngày phát hành 1988-00-00
Mục phân loại 17.040.20. Tính chất bề mặt
Trạng thái Có hiệu lực
* ASTM B 499 (1996) * ASTM B 499 (1988) * ASTM B 499 (1987)
Từ khóa
Coating thickness * Coatings * Magnetic * Measurement * Measuring techniques * Metallic * Metals * Non-magnetic * Thickness
Số trang
5