ASTM F1182-07(2019)
(Specification)Standard Specification for Anodes, Sacrificial Zinc Alloy
Standard Specification for Anodes, Sacrificial Zinc Alloy
ABSTRACT
This specification covers the requirements for sacrificial anodes of zinc alloy in the form of slabs, plates, discs, and rods for corrosion protection (cathodic protection) of metals and alloys. These anodes are primarily intended to reduce corrosion of surface ship and submarine hulls, steel and aluminum equipment and structures, sea chests, sonar domes, and the seawater side of condensers and other heat exchangers. The anodes are available either as cast-in cores (Class 1) or plain with no cores (Class 2). Class 1 anodes shall be of the following types: Type ZHS—hull slabs with steel straps; Type ZHB—hull slabs with brass straps; Type ZHC—hull slabs with core straps; Type ZSS—submarine slabs with steel straps; Type ZTS—teardrop shapes with steel straps; Type ZEP—heat exchanger or fair water discs (pipe core or pipe bushing core) that are in the form of square slabs (Style A), circular slabs (Style B), and semicircular slabs (Style C); Type ZBP—bars with pipe cores; and Type ZDM—segmented discs with machine formed interlocking cores. Conversely, Class 2 anodes shall be of the following types: Type ZRN—extruded, drawn or rolled rods; and Type ZPN—rolled plates. Anodes shall conform to material and manufacture, chemical composition, mechanical property, and dimensional requirements specified uniquely for each type.
SCOPE
1.1 This specification covers the requirements for zinc anodes in the form of slabs, plates, discs, and rods for corrosion protection (cathodic protection) of metals and alloys.
1.2 The anodes are primarily intended to reduce corrosion of surface ship and submarine hulls, steel and aluminum equipment and structures, sea chests, sonar domes, and the seawater side of condensers and other heat exchangers.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
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 establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 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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Designation: F1182 − 07 (Reapproved 2019) An American National Standard
Standard Specification for
Anodes, Sacrificial Zinc Alloy
This standard is issued under the fixed designation F1182; 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 B103/B103M Specification for Phosphor Bronze Plate,
Sheet, Strip, and Rolled Bar
1.1 This specification covers the requirements for zinc
D3951 Practice for Commercial Packaging
anodes in the form of slabs, plates, discs, and rods for corrosion
E290 Test Methods for Bend Testing of Material for Ductil-
protection (cathodic protection) of metals and alloys.
ity
1.2 The anodes are primarily intended to reduce corrosion
E536 Test Methods for Chemical Analysis of Zinc and Zinc
of surface ship and submarine hulls, steel and aluminum
Alloys
equipment and structures, sea chests, sonar domes, and the
2.3 Military Standards:
seawater side of condensers and other heat exchangers.
MIL-STD-129 Marking for Shipment and Storage
1.3 The values stated in inch-pound units are to be regarded
MIL-STD-1186 Cushioning, Anchoring, Bracing, Blocking,
as standard. The values given in parentheses are mathematical
and Waterproofing; With Appropriate Test Methods
conversions to SI units that are provided for information only
2.4 Military Specification:
and are not considered standard.
MIL-P-15011 Pallets Material Handling, Wood Post
1.4 This standard does not purport to address all of the Construction, 4-Way Entry
safety concerns, if any, associated with its use. It is the
2.5 Federal Specifications:
responsibility of the user of this standard to establish appro-
PPP-B-601 Boxes, Wood, Cleated Plywood
priate safety, health, and environmental practices and deter-
PPP-B-621 Boxes, Wood, Nailed and Lock-Corner
mine the applicability of regulatory limitations prior to use.
PPP-B-636 Boxes, Shipping, Fiberboard
1.5 This international standard was developed in accor-
2.6 ASME Standard:
dance with internationally recognized principles on standard-
B1.20.1 Pipe Threads, General Purpose, Inch
ization established in the Decision on Principles for the 5
2.7 ASQ Standard:
Development of International Standards, Guides and Recom-
ASQ/ANSI Z1.4 Sampling Procedures and Tables for In-
mendations issued by the World Trade Organization Technical
spection by Attributes
Barriers to Trade (TBT) Committee.
3. Classification
2. Referenced Documents
3.1 The anodes shall be of the following classes and types,
2.1 Order of Precedence—In the event of a conflict between
as specified (see 4.1.2):
the text of this specification and the references cited herein, the
3.1.1 Class 1—Cast-in cores:
text of this specification shall take precedence.
3.1.1.1 Type ZHS—Zinc, hull slab, steel straps, 23 and 42-lb
(10 and 19-kg) sizes.
2.2 ASTM Standards:
3.1.1.2 Type ZHB—Zinc, hull slab, brass straps, 23-lb (10-
A36/A36M Specification for Carbon Structural Steel
kg) size.
B21/B21M Specification for Naval Brass Rod, Bar, and
3.1.1.3 Type ZHC—Zinc, hull slab, core strap, 23 and 42-lb
Shapes
(10 and 19-kg) sizes.
3.1.1.4 Type ZSS—Zinc, submarine slab, steel strap, 12 and
24-lb (5 and 11-kg) sizes.
This specification is under the jurisdiction of ASTM Committee F25 on Ships
and Marine Technology and is the direct responsibility of Subcommittee F25.07 on
General Requirements.
Current edition approved Dec. 1, 2019. Published January 2020. Originally Available from DLA Document Services, Building 4/D, 700 Robbins Ave.,
approved in 1988. Last previous edition approved in 2013 as F1182 – 07 (2013). Philadelphia, PA 19111-5094, http://quicksearch.dla.mil.
DOI: 10.1520/F1182-07R19. Available from American Society of Mechanical Engineers (ASME), ASME
For referenced ASTM standards, visit the ASTM website, www.astm.org, or International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM www.asme.org.
Standards volume information, refer to the standard’s Document Summary page on Available from American Society for Quality (ASQ), 600 N. Plankinton Ave.,
the ASTM website. Milwaukee, WI 53203, http://www.asq.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1182 − 07 (2019)
3.1.1.5 Type ZTS—Zinc, teardrop shape, steel strap, 5-lb
H hull slab
S submarine slab
(2-kg) size.
T teardrop shape
3.1.1.6 Type ZEP—Zinc, heat exchanger or fair water disc,
E heat exchanger slab
(pipe core or pipe bushing core):
R rod, cylindrical
P plate
Style A square slab, 9-lb (4-kg) size
B bar, square
Style B circular slab, various sizes
D disc, segmented
Style C semicircular slab, 23-lb (10-kg) size
3.2.3 The third letter designates the core:
3.1.1.7 Type ZBP—Zinc, bar, pipe core, 8-lb (4-kg) size.
B brass straps
3.1.1.8 Type ZDM—Zinc, segmented disc, machine formed
S steel straps
interlocking core, various sizes.
C core strap
P pipe core
3.1.2 Class 2—Plain, no cores;
M machine formed interlocking core
3.1.2.1 Type ZRN—Zinc, rod, no core, extruded, drawn or
N no core
rolled.
3.1.2.2 Type ZPN—Zinc, plate, no core, rolled.
4. Ordering Information
3.2 The letter designations of types of anodes have the
4.1 Orders for material under this specification shall include
following meanings:
the following information:
3.2.1 The first letter designates anode metal:
4.1.1 ASTM designation and year of issue,
Z zinc
4.1.2 Class and type (see 3.1),
3.2.2 The second letter designates the shape or general use: 4.1.3 Style of Type ZEP, if required (see 3.1.1.6 and Fig. 1),
FIG. 1 ZEP Heat Exchanger Slab
F1182 − 07 (2019)
4.1.4 Diameter of Type ZEP, Style B, if required (see Fig. 4.3 When material is ordered in the form of slabs, bars,
1),
discs, or rods, these terms refer merely to the general form and
4.1.5 For Type ZDM, whether straight or tapered thread
dimensions of the material and do not have any technical
support plug head is required (see 5.1.4.2),
significance as to the methods of manufacture.
4.1.6 Diameter of Type ZDM, if required (see Fig. 2),
4.1.7 Length, width, and thickness of Type ZHS, if required
5. Materials and Manufacture
(see Fig. 3 and Fig. 4),
5.1 Materials:
4.1.8 Whether Type ZHC is for surface ship or submarine
5.1.1 Types ZHS, ZHC, ZSS, and ZTS anodes shall have
usage, if required (see Figs. 5-8),
steel strap cores in accordance with Specification A36/A36M.
4.1.9 Pipe or bolt diameter of Type ZRN, if required (see
The steel shall be coated with zinc, either by the hot-dip or
Fig. 9),
4.1.10 Thickness of Type ZPN, if required (see 9.2.1), electrodeposition method, to a minimum of 0.0005 in. (0.013
4.1.11 Quantity required (see 4.2), mm).
4.1.12 Quality assurance certification, if required (see 15.1),
5.1.2 Type ZHB anodes shall have brass strap cores in
and
accordance with alloy 482 of Specification B21/B21M or
4.1.13 Optional requirements, if any (see S1 through S3).
phosphor bronze straps in accordance with C51000 of Speci-
4.2 The order for anodes should specify the exact number of fication B103/B103M. The brass or bronze straps shall be
anodes required (see 4.1.11). Acquisition of anodes by weight coated with zinc to a minimum thickness of 0.0005 in. (0.013
is not practical and is not recommended. mm). Lack of adhesion of the zinc coating at bend or absence
NOTE 1—All dimensions are in inches.
NOTE 2—1 in. = 25.4 mm.
FIG. 2 Zinc, Segmented Disc, Machine-Formed Interlocking Core, Type ZDM
F1182 − 07 (2019)
NOTE 1—Anode may be cast with strap in the up or down position. All
NOTE 1—Anode may be cast with strap in the up or down position. All
dimensions (inches) refer to the wider and longer edges of the anode.
dimensions (inches) refer to the wider and longer edges of the anodes. 1
NOTE 2—Tolerance 6 ⁄8 in.
NOTE 2—Tolerance 6 ⁄8 in.
NOTE 3—1 in. = 25.4 mm.
NOTE 3—1 in. = 25.4 mm.
NOTE 4—Minimum weight 41 lb (18.6 kg).
NOTE 4—Minimum weight 21.5 lb (9.7 kg).
FIG. 4 Zinc Hull Slab (Steel Straps), Type ZHS-42
FIG. 3 Zinc Hull Slab (Steel Straps), Type ZHS-23; Zinc Hull Slab
(Brass Straps), Type ZHB
of zinc coating at cut edges will not be cause for rejection of
provided they meet the mechanical properties and other re-
fabricated anodes. Cracks in the base metal shall be cause for
quirements of this specification.
rejection.
5.2.2 For Types ZHS, ZHB, ZHC, ZSS, and ZTS anodes,
5.1.2.1 The maximum copper content in the zinc, as speci-
open or closed molds may be used. Cores and straps shall be
fied in Table 1, may be increased to 0.020 % for Type ZHB
1 1 1
positioned so that they are embedded ⁄4, + ⁄8, or − ⁄16 in. (6, +3,
anodes.
or −2 mm) as shown on Figs. 3-5, Fig. 7, and Fig. 10 and Fig.
5.1.3 Types ZEP and ZBP anodes shall have core inserts
11, which may be measured from either surface of the anode as
made from zinc coated steel pipe or pipe couplings. The
applicable, except Fig. 11 (bottom), which shall be embedded
minimum thickness of the coating shall be as specified in 5.1.1.
3 1 1
⁄8, + ⁄8, or − ⁄16 in. (10, +3, or −2 mm).
5.1.4 Type ZDM anodes shall have machine formed inter-
locking cores in accordance with commercial grade mild or 5.2.2.1 Type ZHC anodes designated as shown on Fig. 6 and
leaded steel. The cores shall be flash coated with zinc, tin, or Fig. 8 and are intended for use with rubber washers for
aluminum before assembly within the anodes. submarine application. The countersink for the rubber washer
5.1.4.1 This core insert consists of an integral piece having may be cast or machined. The anode shall be manufactured so
a threaded male stud at one end and a tapped hole at the other
that the countersink is centered on the core hole and the rubber
end. Provision has been made to achieve self-locking charac-
washer fits snugly between the hull and anode core to prevent
teristics to interlocking threaded assemblies of multiple seg-
anode movement or vibration.
mented anode discs by interference fit of bottom male threads
5.2.2.2 Type ZSS, ZHS, ZHB, and ZTS anodes may be
into a taper tapped hole.
mounted by welding or by fasteners. Those intended to be
attached by fasteners shall indicate the requirements for
5.2 Manufacture:
5.2.1 All anodes covered under this specification shall be mounting holes in the strap. The mounting hole shall be
manufactured by any process suitable to the contracting agency counterbored on the structure side of the strap.
F1182 − 07 (2019)
NOTE 1—Anode may be cast with exposed face in the up or down
position. All dimensions are in inches.
NOTE 2—Tolerance 6 ⁄8 in.
NOTE 3—1 in. = 25.4 mm.
NOTE 4—Minimum weight 21.5 lb (9.7 kg).
FIG. 5 Zinc Hull Slab (Core Strap), Type ZHC-23
5.2.3 The pipe core inserts for Type ZEP anodes shall
NOTE 1—Anode may be cast with exposed face in the up or down
conform to 5.1.3. The position of the pipe core insert shall not
position. All dimensions are in inches.
vary more than 6 ⁄8 in. (3 mm) from the center as shown on 1
NOTE 2—Tolerance 6 ⁄8 in.
Fig. 1.
NOTE 3—1 in. = 25.4 mm.
5.2.4 The position of the pipe core insert for Type ZBP
NOTE 4—Minimum weight 21.5 lb (9.7 kg).
FIG. 6 Zinc Hull Slab (Core Strap), Type ZHC-23, Submarine Ap-
anodes specified in 5.1.3 shall not vary more than 6 ⁄4 in. (6
plication
mm) from the center as shown on Fig. 12.
5.2.5 Metallic bonding or an interference fit of the core into
Type ZDM anode (see Fig. 2) shall be required so that an axial
force applied from the stud end to remove the core insert is a 8. Other Requirements
minimum of 750 lb (340 kg) (see 13.1.3).
8.1 When tested in accordance with 13.1.1 or 13.1.2, Types
5.2.6 The machine formed core insert specified in 5.1.4
ZHS, ZHB, ZHC, ZSS, ZTS, ZEP, and ZBP anodes shall obtain
shall be manufactured in accordance with details and toler-
a sound metallurgical bond between the zinc and core for at
ances shown for Piece 2 on Fig. 1 and ASME B1.20.1.
least 30 % of the total surface area of each core in contact with
5.2.6.1 The pieces shown on Fig. 1 shall screw together very
the anode.
snugly by hand tightening or by using simple hand tools such
8.2 During the manufacturing process, certain toxic com-
as pliers or pipe wrenches.
pounds (such as zinc phosphide) may become by-products.
6. Chemical Composition
Caution should be taken in disposal of process wastewater to
ensure that the composition of the water meets with local, state,
6.1 The anodes shall conform to the composition specified
and federal regulations.
in Table 1. Total of elemental constituents not specified in
Table 1 shall not exceed 0.10 %. Metallic elements not
9. Dimensions, Mass, and Permissible Variations
specified in Table 1 are considered contaminants.
9.1 Types ZHS, ZHB, ZHC, ZTS, ZSS, ZEP, ZBP, ZDM,
7. Mechanical Properties
and ZRN anodes shall be in accordance with the dimensions
7.1 When tested in accordance with 13.2, Types ZRN rods shown in Figs. 1-11, inclusive.
and ZPN plates shall not fracture or show signs of cracking.
9.2 Type ZPN anode shall be 48 in. (1220 mm) in length by
7.2 When tested in accordance with 13.2.1, ZRN anodes 24 in. (610 cm) in width.
shall have a minimum torsional shear strength of 12 000 psi 9.2.1 The thickness shall be either ⁄2 or 1 in. (13 or 25 mm)
(83 MPa). as specified (see 4.1.10).
F1182 − 07 (2019)
NOTE 1—Anode may be cast with exposed face in the up or down position. All dimensions are in inches.
NOTE 2—Tolerance 6 ⁄8 in.
NOTE 3—1 in. = 25.4 mm.
NOTE 4—Minimum weight 39 lb (17.7 kg).
FIG. 7 Zinc Hull Slab (Core Strap), Type ZHC-42
9.3 Types ZSS-12, ZSS-24, ZHC-23, ZHC-42, ZHS-23, and 9.8 The diameter of the ZRN anode shall not vary more than
ZHS-42 shall have the following minimum weight require- 6 ⁄32 in. (1 mm) from the specified diameter.
ments:
9.9 The thickness of Types ZHS, ZHB, ZHC, ZTS, ZPN,
Anode Weight, min, lb (kg)
ZSS, ZEP, and ZBP anodes shall not vary more than 6 ⁄8 in. (3
mm). Thickness measurements shall be taken at random 1 in.
ZSS-12 11.0 (5)
(25 mm) from any edge of the anode by means of a suitable
ZSS-24, ZHC-23, ZHS-23 21.5 (10)
ZHC-42 39.0 (18)
caliper avoiding any surface irregularities which would inter-
ZHS-42 41.0 (19)
fere with a representative measurement.
9.3.1 The total weight of the specified type of anode
9.10 The thickness of Type ZDN anodes shall not vary more
received divided by the
...
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: F1182 − 07 (Reapproved 2013) F1182 − 07 (Reapproved 2019)An American National Standard
Standard Specification for
Anodes, Sacrificial Zinc Alloy
This standard is issued under the fixed designation F1182; 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 specification covers the requirements for zinc anodes in the form of slabs, plates, discs, and rods for corrosion
protection (cathodic protection) of metals and alloys.
1.2 The anodes are primarily intended to reduce corrosion of surface ship and submarine hulls, steel and aluminum equipment
and structures, sea chests, sonar domes, and the seawater side of condensers and other heat exchangers.
1.3 The values stated in inch-pound units are to be regarded as standard. The metric (SI) units, values given in parentheses, are
for information purposes only and may be approximate.parentheses are mathematical conversions to SI units that are provided for
information only and are not considered standard.
1.4 This standard does not purport to address all of the safety concerns 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.
1.5 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
2.1 Order of Precedence—In the event of a conflict between the text of this specification and the references cited herein, the
text of this specification shall take precedence.
2.2 ASTM Standards:
A36/A36M Specification for Carbon Structural Steel
B21/B21M Specification for Naval Brass Rod, Bar, and Shapes
B103/B103M Specification for Phosphor Bronze Plate, Sheet, Strip, and Rolled Bar
D3951 Practice for Commercial Packaging
E290 Test Methods for Bend Testing of Material for Ductility
E536 Test Methods for Chemical Analysis of Zinc and Zinc Alloys
2.3 Military Standards:
MIL-STD-129 Marking for Shipment and Storage
MIL-STD-1186 Cushioning, Anchoring, Bracing, Blocking, and Waterproofing; With Appropriate Test Methods
2.4 Military Specification:
MIL-P-15011 Pallets Material Handling, Wood Post Construction, 4-Way Entry
2.5 Federal Specifications:
PPP-B-601 Boxes, Wood, Cleated Plywood
PPP-B-621 Boxes, Wood, Nailed and Lock-Corner
PPP-B-636 Boxes, Shipping, Fiberboard
This specification is under the jurisdiction of ASTM Committee F25 on Ships and Marine Technology and is the direct responsibility of Subcommittee F25.07 on General
Requirements.
Current edition approved Oct. 1, 2013Dec. 1, 2019. Published October 2013January 2020. Originally approved in 1988. Last previous edition approved in 20072013 as
F1182 – 07.F1182 – 07 (2013). DOI: 10.1520/F1182-07R13.10.1520/F1182-07R19.
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’sstandard’s Document Summary page on the ASTM website.
Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, DLA Document Services, Building 4/D, 700 Robbins Ave., Philadelphia, PA
19111-5098, http://www.dodssp.daps.mil. 19111-5094, http://quicksearch.dla.mil.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1182 − 07 (2019)
2.6 ASME Standard:
B1.20.1 Pipe Threads, General Purpose, Inch
2.7 American National Standards Institute Standards:ASQ Standard:
ANSI/ASME B1.20.1 Pipe Threads, General Purpose (Inch)
ANSI/ASQASQ/ANSI Z1.4 Sampling Procedures and Tables for Inspection by Attributes
3. Classification
3.1 The anodes shall be of the following classes and types, as specified (see 4.1.2):
3.1.1 Class 1—Cast-in cores:
3.1.1.1 Type ZHS—Zinc, hull slab, steel straps, 23 and 42-lb (10 and 19-kg) sizes.
3.1.1.2 Type ZHB—Zinc, hull slab, brass straps, 23-lb (10-kg) size.
3.1.1.3 Type ZHC—Zinc, hull slab, core strap, 23 and 42-lb (10 and 19-kg) sizes.
3.1.1.4 Type ZSS—Zinc, submarine slab, steel strap, 12 and 24-lb (5 and 11-kg) sizes.
3.1.1.5 Type ZTS—Zinc, teardrop shape, steel strap, 5-lb (2-kg) size.
3.1.1.6 Type ZEP—Zinc, heat exchanger or fair water disc, (pipe core or pipe bushing core):core):
Style A square slab, 9-lb (4-kg) size
Style B circular slab, various sizes
Style C semicircular slab, 23-lb (10-kg) size
Style A square slab, 9-lb (4-kg) size
Style B circular slab, various sizes
Style C semicircular slab, 23-lb (10-kg) size
3.1.1.7 Type ZBP—Zinc, bar, pipe core, 8-lb (4-kg) size.
3.1.1.8 Type ZDM—Zinc, segmented disc, machine formed interlocking core, various sizes.
3.1.2 Class 2—Plain, no cores;
3.1.2.1 Type ZRN—Zinc, rod, no core, extruded, drawn or rolled.
3.1.2.2 Type ZPN—Zinc, plate, no core, rolled.
3.2 The letter designations of types of anodes have the following meanings:
3.2.1 The first letter designates anode metal:
Z zinc
3.2.2 The second letter designates the shape or general use:
H hull slab
S submarine slab
T teardrop shape
E heat exchanger slab
R rod, cylindrical
P plate
B bar, square
D disc, segmented
3.2.3 The third letter designates the core:
B brass straps
S steel straps
C core strap
P pipe core
M machine formed interlocking core
N no core
4. Ordering Information
4.1 Orders for material under this specification shall include the following information:
4.1.1 ASTM designation and year of issue,
4.1.2 Class and type (see 3.1),
4.1.3 Style of Type ZEP, if required (see 3.1.1.6 and Fig. 1),
4.1.4 Diameter of Type ZEP, Style B, if required (see Fig. 1),
4.1.5 For Type ZDM, whether straight or tapered thread support plug head is required (see section 5.1.4.2,)5.1.4.2),
4.1.6 Diameter of Type ZDM, if required (see Fig. 2),
4.1.7 Length, width, and thickness of Type ZHS, if required (see Fig. 3 and Fig. 4),
4.1.8 Whether Type ZHC is for surface ship or submarine usage, if required (see Figs. 5-8),
Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
www.asme.org.
Available from American Society for Quality (ASQ), 600 N. Plankinton Ave., Milwaukee, WI 53203, http://www.asq.org.
F1182 − 07 (2019)
FIG. 1 ZEP Heat Exchanger Slab
4.1.9 Pipe or bolt diameter of Type ZRN, if required (see Fig. 9),
4.1.10 Thickness of Type ZPN, if required (see 9.2.1),
4.1.11 Quantity required (see 4.2),
4.1.12 Quality assurance certification, if required (see 15.1), and
4.1.13 Optional requirements, if any (see S1 through S3).
4.2 The order for anodes should specify the exact number of anodes required (see 4.1.11). Acquisition of anodes by weight is
not practical and is not recommended.
4.3 When material is ordered in the form of slabs, bars, discs, or rods, these terms refer merely to the general form and
dimensions of the material and do not have any technical significance as to the methods of manufacture.
5. Materials and Manufacture
5.1 Materials:
5.1.1 Types ZHS, ZHC, ZSS, and ZTS anodes shall have steel strap cores in accordance with Specification A36/A36M. The
steel shall be coated with zinc, either by the hot-dip or electrodeposition method, to a minimum of 0.0005 in. (0.013 mm).
5.1.2 Type ZHB anodes shall have brass strap cores in accordance with alloy 482 of Specification B21/B21M or phosphor
bronze straps in accordance with C51000 of Specification B103/B103M. The brass or bronze straps shall be coated with zinc to
a minimum thickness of 0.0005 in. (0.013 mm). Lack of adhesion of the zinc coating at bend or absence of zinc coating at cut edges
will not be cause for rejection of fabricated anodes. Cracks in the base metal shall be cause for rejection.
5.1.2.1 The maximum copper content in the zinc, as specified in Table 1, may be increased to 0.020 % for Type ZHB anodes.
F1182 − 07 (2019)
NOTE 1—All dimensions are in inches.
NOTE 2—1 in. = 25.4 mm.
FIG. 2 Zinc, Segmented Disc, Machine-Formed Interlocking Core, Type ZDM
5.1.3 Types ZEP and ZBP anodes shall have core inserts made from zinc coated steel pipe or pipe couplings. The minimum
thickness of the coating shall be as specified in 5.1.1.
5.1.4 Type ZDM anodes shall have machine formed interlocking cores in accordance with commercial grade mild or leaded
steel. The cores shall be flash coated with zinc, tin, or aluminum before assembly within the anodes.
5.1.4.1 This core insert consists of an integral piece having a threaded male stud at one end and a tapped hole at the other end.
Provision has been made to achieve self-locking characteristics to interlocking threaded assemblies of multiple segmented anode
discs by interference fit of bottom male threads into a taper tapped hole.
5.2 Manufacture:
5.2.1 All anodes covered under this specification shall be manufactured by any process suitable to the contracting agency
provided they meet the mechanical properties and other requirements of this specification.
5.2.2 For Types ZHS, ZHB, ZHC, ZSS, and ZTS anodes, open or closed molds may be used. Cores and straps shall be
1 1 1
positioned so that they are embedded ⁄4, + ⁄8, or − ⁄16 in. (6, +3, or −2 mm) as shown on Figs. 3-5, Fig. 7, and Fig. 10 and Fig.
11, which may be measured from either surface of the anode as applicable, except Fig. 11 (bottom), which shall be embedded ⁄8,
1 1
+ ⁄8, or − ⁄16 in. (10, +3, or −2 mm).
5.2.2.1 Type ZHC anodes designated as shown on Fig. 6 and Fig. 8 and are intended for use with rubber washers for submarine
application. The countersink for the rubber washer may be cast or machined. The anode shall be manufactured so that the
countersink is centered on the core hole and the rubber washer fits snugly between the hull and anode core to prevent anode
movement or vibration.
5.2.2.2 Type ZSS, ZHS, ZHB, and ZTS anodes may be mounted by welding or by fasteners. Those intended to be attached by
fasteners shall indicate the requirements for mounting holes in the strap. The mounting hole shall be counterbored on the structure
side of the strap.
5.2.3 The pipe core inserts for Type ZEP anodes shall conform to 5.1.3. The position of the pipe core insert shall not vary more
than 6 ⁄8 in. (3 mm) from the center as shown on Fig. 1.
F1182 − 07 (2019)
NOTE 1—Anode may be cast with strap in the up or down position. All dimensions (inches) refer to the wider and longer edges of the anodes.
NOTE 2—Tolerance 6 ⁄8 in.
NOTE 3—1 in. = 25.4 mm.
NOTE 4—Minimum weight 21.5 lb (9.7 kg).
FIG. 3 Zinc Hull Slab (Steel Straps), Type ZHS-23; Zinc Hull Slab (Brass Straps), Type ZHB
5.2.4 The position of the pipe core insert for Type ZBP anodes specified in 5.1.3 shall not vary more than 6 ⁄4 in. (6 mm) from
the center as shown on Fig. 12.
5.2.5 Metallic bonding or an interference fit of the core into Type ZDM anode (see Fig. 2) shall be required so that an axial force
applied from the stud end to remove the core insert is a minimum of 750 lb (340 kg) (see 13.1.3).
5.2.6 The machine formed core insert specified in 5.1.4 shall be manufactured in accordance with details and tolerances shown
for Piece 2 on Fig. 1 and ANSI/ASMEASME B1.20.1.
5.2.6.1 The pieces shown on Fig. 1 shall screw together very snugly by hand tightening or by using simple hand tools such as
pliers or pipe wrenches.
6. Chemical Composition
6.1 The anodes shall conform to the composition specified in Table 1. Total of elemental constituents not specified in Table 1
shall not exceed 0.10 %. Metallic elements not specified in Table 1 are considered contaminants.
7. Mechanical Properties
7.1 When tested in accordance with 13.2, Types ZRN rods and ZPN plates shall not fracture or show signs of cracking.
7.2 When tested in accordance with 13.2.1, ZRN anodes shall have a minimum torsional shear strength of 12 000 psi (83 MPa).
8. Other Requirements
8.1 When tested in accordance with 13.1.1 or 13.1.2, Types ZHS, ZHB, ZHC, ZSS, ZTS, ZEP, and ZBP anodes shall obtain a
sound metallurgical bond between the zinc and core for at least 30 % of the total surface area of each core in contact with the anode.
8.2 During the manufacturing process, certain toxic compounds (such as zinc phosphide) may become by-products. Caution
should be taken in disposal of process wastewater to ensure that the composition of the water meets with local, state, and federal
regulations.
F1182 − 07 (2019)
NOTE 1—Anode may be cast with strap in the up or down position. All dimensions (inches) refer to the wider and longer edges of the anode.
NOTE 2—Tolerance 6 ⁄8 in.
NOTE 3—1 in. = 25.4 mm.
NOTE 4—Minimum weight 41 lb (18.6 kg).
FIG. 4 Zinc Hull Slab (Steel Straps), Type ZHS-42
9. Dimensions, Mass, and Permissible Variations
9.1 Types ZHS, ZHB, ZHC, ZTS, ZSS, ZEP, ZBP, ZDM, and ZRN anodes shall be in accordance with the dimensions shown
in Figs. 1-11, inclusive.
9.2 Type ZPN anode shall be 48 in. (1220 mm) in length by 24 in. (610 cm) in width.
9.2.1 The thickness shall be either ⁄2 or 1 in. (13 or 25 mm) as specified (see 4.1.10).
9.3 Types ZSS-12, ZSS-24, ZHC-23, ZHC-42, ZHS-23, and ZHS-42 shall have the following minimum weight requirements:
Anode Weight, min, lb (kg)
ZSS-12 11.0 (5)
ZSS-24, ZHC-23, ZHS-23 21.5 (10)
ZHC-42 39.0 (18)
ZHS-42 41.0 (19)
9.3.1 The total weight of the specified type of anode received divided by the total number of anodes of that type shall be equal
to or greater than the minimum weight (11.0, 21.5, 39.0, 41.0 lb (5, 10, 18, 19 kg)) of the anode type specified. If the weight is
less than the minimum weight for the type of anode specified, it shall be cause for rejection of the entire lot.
9.4 The length and width of Types ZHS, ZHB, ZHC, ZTS, ZPN, ZSS, and ZBP anodes shall not vary more than 6 ⁄8 in. (3 mm),
measured at the widest surface of the tapered
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