H25 金属化学性能试验方法 标准查询与下载



共找到 841 条与 金属化学性能试验方法 相关的标准,共 57

This International Standard establishes general requirements for stationary corrosion testing of metals and metallic and other inorganic coatings under atmospheric conditions carried out in the open air or under shelters. It can also be applied for testing of complex specimens and assemblies of metallic materials.

Metals and alloys. Atmospheric corrosion testing. General requirements

ICS
77.060
CCS
H25
发布
2011-07-31
实施
2011-07-31

Metals and alloys - Atmospheric corrosion testing - General requirements

ICS
77.060
CCS
H25
发布
2011-07
实施

Code for Continuous Monitoring of Acoustic Emission at Metal Pressure Interface

ICS
77.040.99
CCS
H25
发布
2011-05-19
实施
2011-06-01

This test method provides a controlled corrosive environment which can be utilized to produce relative corrosion resistance information for sintered permanent magnets. Although prediction of performance in natural environments has seldom been statistically correlated with corrosion test results, sufficient empirical results are available to support the usefulness of this test in quantifying relative resistance to corrosion from moisture and heat. The reproducibility of results in this test method is dependent on the type, size, and shape of specimens tested, and the control of the operating variables. In any testing program, sufficient replicates should be included to establish confidence limits. Replicates may be run simultaneously, in subsequent test runs, or in duplicate test chambers. When multiple test chambers and operators are utilized, efforts shall be made to perform a suitable repeatability and reproducibility study for the equipment, operators, and test method.1.1 This test method covers the equipment, procedures, and measurement of the resistance of permanent magnet alloys against corrosion in high temperature, high pressure water vapor environments. This test is also known as the Bulk Corrosion Test (BCT). 1.2 The values and equations stated in customary (cgs-emu and inch-pound) units or SI units are to be regarded separately as standard. Within this standard the SI units, when different from customary units, are shown in brackets, the values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with this standard. 1.3 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.

Standard Test Method for Evaluating Hygrothermal Corrosion Resistance of Permanent Magnet Alloys

ICS
29.030 (Magnetic materials)
CCS
H25
发布
2011
实施

This practice is applicable to ferrous and nonferrous metals; also organic and inorganic coatings. The variations described herein are useful when a different or more corrosive environment than the salt fog described in Practice B117 is desired.1.1 This practice covers and sets forth conditions for five modifications in salt spray (fog) testing for specification purposes. These are in chronological order of their development: 1.1.1 Annex A1, acetic acid-salt spray test, continuous. 1.1.2 Annex A2, cyclic acidified salt spray test. 1.1.3 Annex A3, seawater acidified test, cyclic (SWAAT). 1.1.4 Annex A4, SO2 salt spray test, cyclic. 1.1.5 Annex A5, dilute electrolyte cyclic fog dry test. 1.2 This practice does not prescribe the type of modification, test specimen or exposure periods to be used for a specific product, nor the interpretation to be given to the results. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3.1 Exception8212;Fahrenheit temperature values are given for information only throughout this practice. 1.4 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 consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Practice for Modified Salt Spray (Fog) Testing

ICS
77.060 (Corrosion of metals)
CCS
H25
发布
2011
实施

These test methods describe laboratory tests for comparing the resistance of stainless steels and related alloys to the initiation of pitting and crevice corrosion. The results may be used for ranking alloys in order of increasing resistance to pitting and crevice corrosion initiation under the specific conditions of these methods. Methods A and B are designed to cause the breakdown of Type 304 at room temperature. The use of ferric chloride solutions is justified because it is related to, but not the same as, that within a pit or crevice site on a ferrous alloy in chloride bearing environments (1, 2). The presence of an inert crevice former of consistent dimension on a surface is regarded as sufficient specification of crevice geometry to assess relative crevice corrosion susceptibility. The relative performance of alloys in ferric chloride solution tests has been correlated to performance in certain real environments, such as natural seawater at ambient temperature (3) and strongly oxidizing, low pH, chloride containing environments (4), but several exceptions have been reported (4-7). Methods A, B, C, D, E, and F can be used to rank the relative resistance of stainless steels and nickel base alloys to pitting and crevice corrosion in chloride-containing environments. No statement can be made about resistance of alloys in environments that do not contain chlorides. Methods A, B, C, D, E, and F were designed to accelerate the time to initiate localized corrosion relative to most natural environments. Consequently, the degree of corrosion damage that occurs during testing will generally be greater than that in natural environments in any similar time period. No statement regarding localized corrosion propagation can be made based on the results of Methods A, B, C, D, E or F. Surface preparation can significantly influence results. Therefore, grinding and pickling of the specimen will mean that the results may not be representative of the conditions of the actual piece from which the sample was taken. Note 18212;Grinding or pickling on stainless steel surfaces may destroy the passive layer. A 24-h air passivation after grinding or pickling is sufficient to minimize these differences (8). The procedures in Methods C, D, E and F for measuring critical pitting corrosion temperature and critical crevice corrosion temperature have no bias because the values are defined only in terms of these test methods. Note 28212;When testing as-welded, cylindrical, or other non-flat samples, the standard crevice formers will not provide uniform contact. The use of contoured crevice formers may be considered in such situations, but the use of a pitting test (Practices A, C, or E) should be considered.1.1 These test methods cover procedures for the determination of the resistance of stainless steels and related alloys to pitting and crevice corrosion (see Terminology G15) when exposed to oxidizing chloride environments. Six procedures are described and identified as Methods A, B, C, D, E, and F. 1.1.1 Method A8212;Ferric chloride pitting test. 1.1.2 Method B8212;Ferric chloride crevice test. 1.1.3 Method C8212;Critical pitting temperature test for nickel-base and chromium-bearing alloys. 1.1.4 Method D821......

: Standard Test Methods for Pitting and Crevice Corrosion Resistance of Stainless Steels and Related Alloys by Use of Ferric Chloride Solution

ICS
77.060 (Corrosion of metals)
CCS
H25
发布
2011
实施

This test method provides controlled environments which are utilized to produce corrosion of metal, metal-coated, or nonmetallic-coated smooth or deformed shank driven fasteners in contact with treated wood exposed to the given test environments. The test method provides information that can be used to evaluate the corrosion resistance of metal, metal-coated, or nonmetallic-coated smooth or deformed shank driven fasteners in contact with different chemical wood treatments. The results shall be used for comparative purposes only and they shall not be correlated to exposure time in natural environments. The reproducibility of results in these types of tests is highly dependent on the type of samples tested and the evaluation criteria selected, as well as the control of the operating variables.1.1 This test method covers and focuses on the corrosion resistance of metal, metal-coated, and nonmetallic-coated smooth and deformed shank driven fasteners in contact with treated wood in exterior or high moisture exposure applications using comparative tests with control fastener specimens of standardized benchmarks. This test method may be used for preservative-treated wood. 1.2 This test method describes the apparatus, procedure, and conditions required to maintain test environments for the Cyclic Fog Test and the Steady State Moisture Test. 1.3 This test method describes the types of test samples, lists exposure periods, and gives guidance on interpretation of results. 1.4 Until experience is gained comparing laboratory-to-laboratory results with this test method, comparisons of fasteners, coatings, materials, or preservatives shall be made only within the results of the same test. 1.5 The values stated in SI units are to be regarded as standard. The values in parentheses are for information only. 1.6 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.

Standard Test Method for Determining the Relative Corrosion Performance of Driven Fasteners in Contact with Treated Wood

ICS
21.060.01
CCS
H25
发布
2011
实施

This test method is suitable for setting specifications, for use as an internal quality control tool, and for use in development or research work on industrial aromatic hydrocarbons and related materials. It also gives an indication of the presence of certain corrosive substances which may corrode equipment, such as acidic compounds or sulfur compounds.1.1 This test method covers the corrosiveness of industrial aromatic hydrocarbons to a copper strip. Note 18212;For a similar copper strip test applicable to other petroleum products, see Test Method D130 and Test Method D1838. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 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 hazard statements, see Section 8.

Standard Test Method for Copper Strip Corrosion by Industrial Aromatic Hydrocarbons

ICS
77.150.30
CCS
H25
发布
2011
实施

Corrosion of metals and alloys - Alternate immersion test in salt solution (ISO 11130:2010); German version EN ISO 11130:2010

ICS
77.060
CCS
H25
发布
2010-12
实施

YS/T 738的本部分规定了填料用氢氧化铝中可溶碱的测定方法。 本部分适用于填料用氢氧化铝中可溶碱的测定,测定范围:0.001%-0.200%。

Analysis method for aluminum hydroxide for filler- Part 2: Determination method of soulble alkali

ICS
87.060.10
CCS
H25
发布
2010-11-22
实施
2011-03-01

YS/T 738的本部分规定了填料用氢氧化铝中硫化物的测定方法。 本部分适用于填料用氢氧化铝中硫化物的测定。测定范围:硫化物≤5 µg/mL。

Analysis method for aluminum hydroxide for filler- Part 3: Determination method of sulphur

ICS
87.060.10
CCS
H25
发布
2010-11-22
实施
2011-03-01

YS/T 738的本部分规定了填料用氢氧化铝pH值的测定方法。 本部分适用于填料用氢氧化铝pH值的测定,测定范围 pH:6.0-10.5。

Analysis Method for aluminum hydroxide for filler- Part 1: Determination method of pH value

ICS
87.060.10
CCS
H25
发布
2010-11-22
实施
2011-03-01

Corrosion of metals and alloys - Alternate immersion test in salt solution.

ICS
77.060
CCS
H25
发布
2010-08-01
实施
2010-08-07

Anodizing of aluminium and its alloys - Rating system for the evaluation of pitting corrosion - Chart method

ICS
25.220.20;77.060
CCS
H25
发布
2010-08
实施

Anodizing of aluminium and its alloys - Visual determination of image clarity of anodic oxidation coatings - Chart scale method

ICS
25.220.20
CCS
H25
发布
2010-08
实施

This International Standard specifies a method for assessing the corrosion resistance of metals by an alternate immersion test in salt solution, with or without applied stress. The test is particularly suitable for quality control during the manufacture of metals including aluminium alloys and ferrous materials, and also for assessment purposes during alloy development. Depending upon the chemical composition of the test solution, the test can be used to simulate the corrosive effects of marine splash zones, de-icing fluids and acid salt environments. The term “metal” as used in this International Standard includes metallic materials with or without corrosion protection. The alternate immersion test applies to -metals and their alloys, -certain metallic coatings (anodic and cathodic with respect to the substrate), -certain conversion coatings, -certain anodic oxide coating, and -organic coatings on metals. This International Standard is not applicable to stainless steel.

Corrosion of metals and alloys - Alternate immersion test in salt solution

ICS
77.060
CCS
H25
发布
2010-07-31
实施
2010-07-31

Corrosion of metals and alloys - Accelerated corrosion test for intergranular corrosion susceptibility of austenitic stainless steels

ICS
77.060
CCS
H25
发布
2010-01-31
实施
2010-01-31

It is essential that engine coolants prevent heat-transfer corrosion of aluminum cylinder heads during engine operation. Any corrosion products formed may deposit on interior radiator surfaces, reducing heat-transfer efficiency of the radiator. Overheating and boil-over of the cooling system may then occur. This test method provides a means for selectively screening unused engine coolants and will readily distinguish those coolants that are unsuitable for use with aluminum cylinder head engines. However, satisfactory performance of a coolant in this test method does not ensure adequate long-term service performance. Additional, more comprehensive evaluations with simulated service, dynamometer, and vehicle tests should be used to establish the long-term effectiveness of the coolant.1.1 This test method covers a laboratory screening procedure for evaluating the effectiveness of engine coolants in combating corrosion of aluminum casting alloys under heat-transfer conditions that may be present in aluminum cylinder head engines. 1.2 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. Specific precautionary statements are given in Sections 11 and 12.

Standard Test Method for Corrosion of Cast Aluminum Alloys in Engine Coolants Under Heat-Rejecting Conditions

ICS
77.120.10 (Aluminium and aluminium alloys)
CCS
H25
发布
2010
实施

This test method may be used to estimate the relative resistance of materials to cavitation erosion as may be encountered, for instance, in pumps, hydraulic turbines, hydraulic dynamometers, valves, bearings, diesel engine cylinder liners, ship propellers, hydrofoils, and in internal flow passages with obstructions. An alternative method for similar purposes is Test Method G 134, which employs a cavitating liquid jet to produce erosion on a stationary specimen. The latter may be more suitable for materials not readily formed into a precisely shaped specimen. The results of either, or any, cavitation erosion test should be used with caution; see 5.8. Some investigators have also used this test method as a screening test for materials subjected to liquid impingement erosion as encountered, for instance, in low-pressure steam turbines and in aircraft, missiles or spacecraft flying through rainstorms. Practice G 73 describes another testing approach specifically intended for that type of environment. This test method is not recommended for evaluating elastomeric or compliant coatings, some of which have been successfully used for protection against cavitation or liquid impingement of moderate intensity. This is because the compliance of the coating on the specimen may reduce the severity of the liquid cavitation induced by its vibratory motion. The result would not be representative of a field application, where the hydrodynamic generation of cavitation is independent of the coating. Note 18212;An alternative approach that uses the same basic apparatus, and is deemed suitable for compliant coatings, is the “stationary specimen” method. In that method, the specimen is fixed within the liquid container, and the vibrating tip of the horn is placed in close proximity to it. The cavitation “bubbles” induced by the horn (usually fitted with a highly resistant replaceable tip) act on the specimen. While several investigators have used this approach (see X3.2.3), they have differed with regard to standoff distances and other arrangements. The stationary specimen approach can also be used for brittle materials which can not be formed into a threaded specimen nor into a disc that can be cemented to a threaded specimen, as required for this test method (see 7.6). This test method should not be directly used to rank materials for applications where electrochemical corrosion or solid particle impingement plays a major role. However, adaptations of the basic method and apparatus have been used for such purposes (see 9.2.5, 9.2.6, and X3.2). Guide G 119 may be followed in order to determine the synergism between the mechanical and electrochemical effects. Those who are engaged in basic research, or concerned with very specialized applications, may need to vary some of the test parameters to suit their purposes. However, adherence to this test method in all other respects will permit a better understanding and correlation between the results of different investigators. Because of the nonlinear nature of the erosion-versus-time curve in cavitation and liquid impingement erosion, the shape of that curve must be considered in making comparisons and drawing conclusions. See Section 11. The results of this test may be significantly affected by the specimen’s surface preparation. This must be considered in planning, conducting and reporting a test program. See also 7.4 and 12.2. The mechanisms of cavitation erosion and liquid impingement erosion are not fully understood and may differ, depending on the detailed nature, scale, and inte............

Standard Test Method for Cavitation Erosion Using Vibratory Apparatus

ICS
77.060
CCS
H25
发布
2010
实施

Pipeline External Corrosion Direct Assessment Methodology

ICS
23.040.01;77.060
CCS
H25
发布
2010
实施



Copyright ©2007-2022 ANTPEDIA, All Rights Reserved
京ICP备07018254号 京公网安备1101085018 电信与信息服务业务经营许可证:京ICP证110310号