ASTM B695-04
(Specification)Standard Specification for Coatings of Zinc Mechanically Deposited on Iron and Steel
Standard Specification for Coatings of Zinc Mechanically Deposited on Iron and Steel
ABSTRACT
This specification covers the requirements for zinc coatings that are mechanically deposited on iron or steel basis metals. The zinc coatings are classified according to thickness and identified into two types; as coated without supplementary treatments or with colored chromate conversion treatment. The thickest coating classes are usually referred to as "mechanically galvanized". All deposited coatings should have a bright uniform silvery appearance, and a matte to medium-bright luster. Samples should be tested for adhesion, salt-spray corrosion resistance, appearance, thickness, and absence of hydrogen embrittlement. All tests results should comply with the given requirements.
SCOPE
1.1 This specification covers the requirements for a coating of zinc mechanically deposited on iron and steel basis metals. The coating is provided in several thicknesses up to and including 107 m. The seven thickest classes are usually referred to as "mechanically galvanized."
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.
The performance of this coating complies with the requirements of Specification A 153/A 153M and MIL-C-81562.
1.3 The values stated in SI units are to be regarded as the standard. The inch-pound equivalents of SI units are given for informational purposes.
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Designation: B695 – 04
Standard Specification for
1
Coatings of Zinc Mechanically Deposited on Iron and Steel
This standard is issued under the fixed designation B695; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 3. Classification
1.1 This specification covers the requirements for a coating 3.1 Classes—Zinc coatings are classified on the basis of
of zinc mechanically deposited on iron and steel basis metals. thickness, as follows:
The coating is provided in several thicknesses up to and
Class Minimum Thickness, µm
110 107
including 107 µm. The seven thickest classes are usually
80 81
referred to as “mechanically galvanized.”
70 69
1.2 This standard does not purport to address all of the
65 66
55 53
safety concerns, if any, associated with its use. It is the
50 50
responsibility of the user of this standard to establish appro-
40 40
priate safety and health practices and determine the applica-
25 25
12 12
bility of regulatory limitations prior to use.
88
55
NOTE 1—The performance of this coating complies with the require-
ments of Specification A153/A153M and MIL-C-81562.
3.2 Types—Zinc coatings are identified by types on the
1.3 The values stated in SI units are to be regarded as the
basis of supplementary treatment required, as follows:
standard. The inch-pound equivalents of SI units are given for Type I—As coated, without supplementary treatment (Ap-
informational purposes.
pendix X2.1).
Type II—With colored chromate conversion treatment (Ap-
2. Referenced Documents
pendix X2.2).
2
2.1 ASTM Standards:
4. Ordering Information
A153/A153M Specification for Zinc Coating (Hot-Dip) on
Iron and Steel Hardware
4.1 Supplyingthefollowinginformationbythepurchaserto
A194/A194M Specification for Carbon and Alloy Steel
the seller in the purchase order or other governing document
Nuts for Bolts for High Pressure or High Temperature
will make the application of this specification complete:
Service, or Both
4.1.1 Class, including a maximum thickness, if appropriate,
A325 SpecificationforStructuralBolts,Steel,HeatTreated, type,andforTypeII,colorandneedforsupplementallubricant
120/105 ksi Minimum Tensile Strength
(3.1, 3.2, and 6.2.5),
A325 SpecificationforStructuralBolts,Steel,HeatTreated, 4.1.2 Nature of substrate (for example, high-strength steel),
120/105 ksi Minimum Tensile Strength
need for stress relief (6.2.1), and cleaning precautions to be
followed (6.2.2 and 6.2.3),
4.1.3 Significant surfaces (6.3),
1
This specification is under the jurisdiction of ASTM Committee B08 on 4.1.4 Requirements for and methods of testing for one or
Metallic and Inorganic Coatings and is the direct responsibility of Subcommittee
more of the following, if required: need for and type of test
B08.08.04 on Soft Metals.
specimens (8.1), thickness (6.3 and 8.3), adhesion (6.4 and
Current edition approved Aug. 1, 2004. Published August 2004. Originally
8.4), corrosion resistance (6.5 and 8.5), absence of hydrogen
approved in 1982. Last previous edition approved in 2000 as B 695 – 00. DOI:
10.1520/B0695-04.
embrittlement,andthewaitingperiodbeforetestingandtesting
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
loads (6.6 and 8.6),
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
4.1.5 Inspection responsibility (Section 11) and sampling
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. plan for each inspection criterion (Section 7), and
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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B695 – 04
4.1.6 Requirements for certified report of test results (Sec- (3) A “promoter” or “accelerator” which aids in the
tion 10). uniform deposition of the metal powder; and
(4) A liquid medium, generally water.
5. Workmanship
6.2.4.4 Separation of the parts from the solid and liquid
5.1 The coating shall be uniform in appearance and free of
media.
blisters, pits, nodules, flaking, and other defects that are
6.2.4.5 Rinsing.
capable of adversely affecting the function of the coating. The
6.2.4.6 Drying.
coating shall cover all surfaces as stated in 6.3 including roots
6.2.5 Supplementary Treatments:
of threads, thread peaks, corners, recesses, and edges. The
6.2.5.1 Colored Chromate Conversion Treatments (Type
coating shall not be stained or discolored throughout to an
II)—Colored chromate conversion treatment for Type II shall
extent capable of adve
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:B695–00 Designation: B 695 – 04
Standard Specification for
1
Coatings of Zinc Mechanically Deposited on Iron and Steel
This standard is issued under the fixed designation B 695; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope
1.1 This specification covers the requirements for a coating of zinc mechanically deposited on iron and steel basis metals. The
coating is provided in several thicknesses up to and including 107 µm. The seven thickest classes are usually referred to as
“mechanically galvanized.”
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.
NOTE 1—The performance of this coating complies with the requirements of Specification A 153/A 153M and MIL-C-81562.
1.3 The values stated in SI units are to be regarded as the standard.The inch-pound equivalents of SI units may be approximate.
are given for informational purposes.
2. Referenced Documents
2
2.1 ASTM Standards:
A 153/A 153M Specification for Zinc Coating (Hot–Dip) on Iron and Steel Hardware
A 194/A 194M Specification for Carbon and Alloy Steel Nuts for Bolts for High-Pressure and High-Temperature Service
Specification for Carbon and Alloy Steel Nuts for Bolts for High Pressure or High Temperature Service, or Both
A 325 Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength
A 490 Specification for Heat-Treated, Steel Structural Bolts, 150 ksi Minimum Tensile Strength
A 563 Specification for Carbon and Alloy Steel Nuts
B117 Practice for Operating Salt Spray (Fog) Apparatus
B 183 Practice for Preparation of Low-Carbon Steel for Electroplating
B 242 Practice for Preparation of High-Carbon Steel for Electroplating
B 322 PracticeGuide for Cleaning Metals Prior to Electroplating
B 487 Test Method for Measurement of Metal and Oxide Coating ThicknessesThickness by Microscopical Examination of a
Cross Section
B 499 Test Method for Measurement of Coating Thicknesses by the Magnetic Method: Nonmagnetic Coatings on Magnetic
Basis Metals
6
B 571 Test Methods for Adhesion of Metallic Coatings Practice for Qualitative Adhesion Testing of Metallic Coatings
6
B 602 Test Method forAttribute Sampling of Metallic and Inorganic Coatings Test Method forAttribute Sampling of Metallic
and Inorganic Coatings
B 697 Guide for Selection of Sampling Plans for Inspection of Electrodeposited Metallic and Inorganic Coatings
B 762 Test Method of Variables Sampling of Metallic and Inorganic Coatings
F 1470 Guide for Fastener Sampling for Specified Mechanical Properties and Performance Inspection
2.2 Military Standard:
3
MIL-C-81562 Coating, Cadmium, Tin Cadmium and Zinc (Mechanically Deposited)
2.3 AISC Standard:
1
This specification is under the jurisdiction ofASTM Committee B-8 B08 on Metallic and Inorganic Coatings and is the direct responsibility of Subcommittee B08.08.04
on Light Metals.
Current edition approved March 10, 2000. Published May 2000. Originally published as B695–82. Last previous edition B695–91 (1997).
Current edition approved Aug. 1, 2004. Published August 2004. Originally approved in 1982. Last previous edition approved in 2000 as B 695 – 00.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book ofASTM Standards
, Vol 01.06.volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Annual Book of ASTM Standards, Vol 01.01.
3
Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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B695–04
4
Specifications for Structural Joints Using ASTM A 325 or A 490 Bolts
3. Classification
3.1 Classes—Zinc coatings are classified on the basis of thickness, as follows:
Class Minimum Thickness, µm
110 107
80 81
70 69
65 66
55 53
50 50
40 40
25 25
12 12
8 8
5 5
3.2 Types—Zinc coatings
...
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