ASTM B602-21
(Guide)Standard Guide for Attribute Sampling of Metallic and Inorganic Coatings
Standard Guide for Attribute Sampling of Metallic and Inorganic Coatings
SIGNIFICANCE AND USE
4.1 Sampling inspection permits the estimation of the overall quality of a group of product articles through the inspection of a relatively small number of product items drawn from the group.
4.2 The selection of a sampling plan provides purchasers and sellers a means of identifying the minimum quality levels that are considered to be satisfactory.
4.3 Because sampling plans will only yield estimates of the quality of a product, the results of the inspection are subject to error. Through the use of sampling plans, the risk of error is known and controlled.
SCOPE
1.1 This guide gives sampling plans that are intended for use in the inspection of metallic and inorganic coatings for conformance to ASTM standard specifications.
1.2 The plans in this guide, except as noted, have been selected from some of the single sampling plans of MIL-STD-105D. The specific plans selected are identified in Tables 1-3 of this guide. The plan of Table 4, which is used for destructive testing, is not from the Military Standard. This standard does not contain the Military Standard's requirement for tightened inspection when the quality history of a supplier is unsatisfactory.
1.3 The plans are based on inspection by attributes, that is, an article of product is inspected and is classified as either conforming to a requirement placed on it, or as nonconforming. Sampling plans based on inspection by variables are given in Guide B762. Variables plans are applicable when a test yields a numerical value for a characteristic, when the specification imposes a numerical limit on the characteristic, and when certain statistical criteria are met. These are explained in Guide B762.
1.4 The plans in this guide are intended to be generally suitable. There may be instances in which tighter or looser plans or ones that are more discriminating are desired. Additional plans that may serve these needs are given in Guide B697. Also, Guide B697 describes the nature of attribute sampling plans and the several factors that must be considered in the selection of a sampling plan. More information and an even greater selection of plans are given in MIL-STD-105D, MIL-STD-414, ANSI/ASQC Z1.9-1979, Refs (1-7)2, and in Guide B697.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
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Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: B602 − 21
Standard Guide for
1
Attribute Sampling of Metallic and Inorganic Coatings
This standard is issued under the fixed designation B602; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
1.1 This guide gives sampling plans that are intended for
1.6 This international standard was developed in accor-
use in the inspection of metallic and inorganic coatings for
dance with internationally recognized principles on standard-
conformance to ASTM standard specifications.
ization established in the Decision on Principles for the
1.2 The plans in this guide, except as noted, have been
Development of International Standards, Guides and Recom-
selected from some of the single sampling plans of MIL-STD-
mendations issued by the World Trade Organization Technical
105D.ThespecificplansselectedareidentifiedinTables1-3of
Barriers to Trade (TBT) Committee.
this guide. The plan of Table 4, which is used for destructive
2. Referenced Documents
testing, is not from the Military Standard. This standard does
3
not contain the Military Standard’s requirement for tightened
2.1 ASTM Standards:
inspection when the quality history of a supplier is unsatisfac-
B697Guide for Selection of Sampling Plans for Inspection
tory.
of Electrodeposited Metallic and Inorganic Coatings
B762GuideofVariablesSamplingofMetallicandInorganic
1.3 The plans are based on inspection by attributes, that is,
Coatings
an article of product is inspected and is classified as either
4
2.2 ANSI Standard:
conformingtoarequirementplacedonit,orasnonconforming.
ANSI/ASQC Z1.9-1979Sampling Procedures and Tables
Sampling plans based on inspection by variables are given in
for Inspection byVariables for Percent Non-Conformance
Guide B762. Variables plans are applicable when a test yields
5
2.3 Military Standards:
a numerical value for a characteristic, when the specification
MIL-STD-105DSampling Procedures and Tables for In-
imposes a numerical limit on the characteristic, and when
spection by Attributes
certainstatisticalcriteriaaremet.TheseareexplainedinGuide
MIL-STD-414 Sampling Procedures and Tables for Inspec-
B762.
tion by Variables for Percent Defective
1.4 The plans in this guide are intended to be generally
suitable. There may be instances in which tighter or looser
3. Terminology
plans or ones that are more discriminating are desired. Addi-
3.1 Definitions:
tional plans that may serve these needs are given in Guide
3.1.1 destructive test, n—test that destroys the tested article
B697. Also, Guide B697 describes the nature of attribute
or makes it nonconforming to a requirement.
sampling plans and the several factors that must be considered
3.1.2 inspection lot, n—collection of articles of the same
in the selection of a sampling plan. More information and an
kind that is submitted to inspection for acceptance or rejection
even greater selection of plans are given in MIL-STD-105D,
2
as a group.
MIL-STD-414, ANSI/ASQC Z1.9-1979, Refs (1-7) , and in
Guide B697.
3.1.3 nondestructive test, n—test that neither destroys the
tested article nor makes it nonconforming to a requirement.
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3.1.4 sample, n—articlesrandomlyselectedfromaninspec-
responsibility of the user of this standard to establish appro- tion lot whose quality is used to decide whether or not the
inspection lot is of acceptable quality.
1 3
This guide is under the jurisdiction ofASTM Committee B08 on Metallic and For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Inorganic Coatings and is the direct responsibility of Subcommittee B08.10 on Test contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Methods. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Oct. 1, 2021. Published November 2021. Originally the ASTM website.
4
approvedin1975.Lastpreviouseditionapprovedin2016asB602–88(2016).DOI: Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
10.1520/B0602-21. 4th Floor, New York, NY 10036, http://www.ansi.org.
2
5
Theboldfacenumbersinparenthesesrefertothelistofreferencesattheendof Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
this standard. Section D
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: B602 − 88 (Reapproved 2016) B602 − 21
Standard Test Method Guide for
1
Attribute Sampling of Metallic and Inorganic Coatings
This standard is issued under the fixed designation B602; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method guide gives sampling plans that are intended for use in the inspection of metallic and inorganic coatings for
conformance to ASTM standard specifications.
1.2 The plans in this test method, guide, except as noted, have been selected from some of the single sampling plans of
MIL-STD-105D. The specific plans selected are identified in Tables 1-3 of this test method. guide. The plan of Table 4, which is
used for destructive testing, is not from the Military Standard. This standard does not contain the Military Standard’s requirement
for tightened inspection when the quality history of a supplier is unsatisfactory.
1.3 The plans are based on inspection by attributes, that is, an article of product is inspected and is classified as either conforming
to a requirement placed on it, or as nonconforming. Sampling plans based on inspection by variables are given in Test Method
Guide B762. Variables plans are applicable when a test yields a numerical value for a characteristic, when the specification imposes
a numerical limit on the characteristic, and when certain statistical criteria are met. These are explained in Test Method Guide
B762.
1.4 The plans in this test method guide are intended to be generally suitable. There may be instances in which tighter or looser
plans or ones that are more discriminating are desired. Additional plans that may serve these needs are given in Guide B697. Also,
Guide B697 describes the nature of attribute sampling plans and the several factors that must be considered in the selection of a
sampling plan. More information and an even greater selection of plans are given in MIL-STD-105D, MIL-STD-414, ANSI/ASQC
2
Z1.9-1979, Refs (1-7) , and in Guide B697.
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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
3
2.1 ASTM Standards:
1
This test method guide is under the jurisdiction of ASTM Committee B08 on Metallic and Inorganic Coatings and is the direct responsibility of Subcommittee B08.10
on Test Methods.
Current edition approved Nov. 1, 2016Oct. 1, 2021. Published November 2016November 2021. Originally approved in 1975. Last previous edition approved in 20102016
as B602 – 88 (2010).(2016). DOI: 10.1520/B0602-88R16. 10.1520/B0602-21.
2
The boldface numbers in parentheses refer to the list of references at the end of this standard.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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B602 − 21
A
TABLE 1 Level I—Sampling Plan for Nondestructive Tests
Acceptance
Inspection Lot Size Sample Size AQL, % 50/50 Point, % LQL, % AOQL,%
Number
B
1 to 20 all 0 . . . .
21 to 280 20 0 0.26 3.4 11.0 1.8
281 to 1 200 80 1 0.44 2.1 4.8 1.1
1 201 to 3 200 125 2 0.65 2.1 4.3 1.1
3 201 to 10 000 200 3 0.68 1.8 3.3 0.97
10 001 to 35 000 315 5 0.83 1.8 2.9 1.0
Over 35 000 500 7 0.80 1.5 2.4 0.90
A
Taken from MIL-STD-105D, Single Sampling Plan, Level II, AQL = 0.65, Normal Inspection.
B
The smallest lots are 100 % inspected, and so there is no sampling risk. For this reason, there are no AQL, etc.
A
TABLE 2 Level II—Sampling Plan for Nondestructive Tests
Acceptance
Inspection Lot Size Sample Size
...
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