ASTM B898-20
(Specification)Standard Specification for Reactive and Refractory Metal Clad Plate
Standard Specification for Reactive and Refractory Metal Clad Plate
ABSTRACT
This specification covers plate consisting of a base metal to which is bonded, integrally and continuously, on one or both sides a layer of one of the following: titanium, zirconium, tantalum, niobium, and their alloys. The material generally is intended for pressure vessel use. The cladding metal shall be bonded to the base metal by any cladding operation that will produce a clad product which will conform to the requirements of this specification. When the cladding operation does not affect the chemical composition of the cladding or base metal, or both, the chemical analysis, in accordance with cladding, or base metal specifications or both, may be performed prior to the cladding operation. All heat treatments shall be performed as needed in the cladding operation unless otherwise specified or agreed between the purchaser and the manufacturer. Mechanical testing of the base metal, in accordance with the base metal specification, may be performed prior to the cladding operation. The tensile properties shall be determined by a tension test on the base metal only in accordance with the testing requirements of the base metal specification. The specimen orientation, location with respect to thickness, and number of tests and retests shall be in accordance with the requirements of the base metal specification when tension, bend, and impact tests shall be performed. The product surfaces shall be free of excess imperfections and extraneous materials as determined by visual examination.
SCOPE
1.1 This specification covers plate consisting of a base metal to which is bonded, integrally and continuously, on one or both sides a layer of one of the following: titanium, zirconium, tantalum, niobium, and their alloys. The material generally is intended for pressure vessel use.
1.2 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. The values in parentheses and in metric tables are provided for information only.
1.3 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
Relations
Buy Standard
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:B898 −20
Standard Specification for
1
Reactive and Refractory Metal Clad Plate
This standard is issued under the fixed designation B898; 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.
3
1. Scope 2.2 ASME Code:
BoilerandPressureVesselCode,SectionIXWeldingQuali-
1.1 Thisspecificationcoversplateconsistingofabasemetal
fications
towhichisbonded,integrallyandcontinuously,ononeorboth
Boiler and Pressure Vessel Code, Section VIIIDivisions 1,
sides a layer of one of the following: titanium, zirconium,
2, 3
tantalum, niobium, and their alloys. The material generally is
4
2.3 Military Standard:
intended for pressure vessel use.
MIL-J-24445A Joint, Bimetallic Bonded, Aluminum to
1.2 Thevaluesstatedininch-poundunitsaretoberegarded
Steel
5
as standard. The values given in parentheses are mathematical
2.4 ASNT Standards:
conversions to SI units that are provided for information only
SNT-TC-1A Recommended Practice No. SNT-TC-1A Per-
andarenotconsideredstandard.Thevaluesinparenthesesand
sonnel Qualification and Certification in Nondestructive
in metric tables are provided for information only.
Testing
1.3 This international standard was developed in accor-
3. Terminology
dance with internationally recognized principles on standard-
3.1 Definitions of Terms Specific to This Standard:
ization established in the Decision on Principles for the
3.1.1 This material is considered as single-clad or double-
Development of International Standards, Guides and Recom-
clad dependent upon whether one or both sides of the base
mendations issued by the World Trade Organization Technical
metal are covered by a cladding metal.
Barriers to Trade (TBT) Committee.
3.1.2 base metal, n—the component that comprises the
greatest percentage of total thickness.
2. Referenced Documents
2 3.1.3 cladding metal, or cladding metals, n—the
2.1 ASTM Standards:
component, or components, which individually comprise less
B265Specification for Titanium and Titanium Alloy Strip,
than the greatest percentage of total thickness.
Sheet, and Plate
3.1.4 cladding operation, n—the production event, which
B393Specification for Niobium and Niobium Alloy Strip,
results in the formation of the bond between the cladding and
Sheet, and Plate
base metal components, plus all related prebonding and post
B551/B551MSpecification for Zirconium and Zirconium
bonding operations, prior to supply to the purchaser.
Alloy Strip, Sheet, and Plate
B708Specification for Tantalum and Tantalum Alloy Plate,
3.1.5 interface, n—of the clad product, is that region of
Sheet, and Strip
thickness in which the product transitions from essentially
E114Practice for Ultrasonic Pulse-Echo Straight-Beam
100% base metal to 100% cladding metal. Also known as
Contact Testing
bond or bond zone.
3.1.6 interlayer, n—ametallayerofatypeorgradedifferent
from the cladding metal and base metal, which is applied
1
This specification is under the jurisdiction of ASTM Committee B10 on between the cladding and base metal.
Reactive and Refractory Metals and Alloys and is the direct responsibility of
Subcommittee B10.01 on Titanium.
3
Current edition approved April 1, 2020. Published April 2020. Originally Available from American Society of Mechanical Engineers (ASME), ASME
approved in 1999. Last previous edition approved in 2019 as B898–19. DOI: International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
10.1520/B0898-20. www.asme.org.
2 4
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from DLA Document Services, Building 4/D, 700 Robbins Ave.,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Philadelphia, PA 19111-5094, http://quicksearch.dla.mil.
5
Standards volume information, refer to the standard’s Document Summary page on AvailablefromAmericanSocietyforNondestructiveTesting(ASNT),P.O.Box
the ASTM website. 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http://www.asnt.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
B898−20
3.1.7 integrally and continuously bonded, adv—a condition 6. Chemical Composition
in which the cladding metal and base metal are brought
6.1 The composite plate may conform to any desired com-
together to form a metallurgical bond at essentially the entire
bination of cladding metal and base metal as described in 6.2
inte
...
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: B898 − 19 B898 − 20
Standard Specification for
1
Reactive and Refractory Metal Clad Plate
This standard is issued under the fixed designation B898; 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 plate consisting of a base metal to which is bonded, integrally and continuously, on one or both
sides a layer of one of the following: titanium, zirconium, tantalum, niobium, and their alloys. The material generally is intended
for pressure vessel use.
1.2 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. The values in parentheses and in
metric tables are provided for information only.
1.3 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
2.1 ASTM Standards:
B265 Specification for Titanium and Titanium Alloy Strip, Sheet, and Plate
B393 Specification for Niobium and Niobium Alloy Strip, Sheet, and Plate
B551/B551M Specification for Zirconium and Zirconium Alloy Strip, Sheet, and Plate
B708 Specification for Tantalum and Tantalum Alloy Plate, Sheet, and Strip
E114 Practice for Ultrasonic Pulse-Echo Straight-Beam Contact Testing
3
2.2 ASME Code:
Boiler and Pressure Vessel Code, Section IX Welding Qualifications
Boiler and Pressure Vessel Code, Section VIII Divisions 1, 2, 3
4
2.3 Military Standard:
MIL-J-24445A Joint, Bimetallic Bonded, Aluminum to Steel
5
2.4 ASNT Standards:
SNT-TC-1A Recommended Practice No. SNT-TC-1A Personnel Qualification and Certification in Nondestructive Testing
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 This material is considered as single-clad or double-clad dependent upon whether one or both sides of the base metal are
covered by a cladding metal.
3.1.2 base metal, n—the component that comprises the greatest percentage of total thickness.
3.1.3 cladding metal, or cladding metals, n—the component, or components, which individually comprise less than the greatest
percentage of total thickness.
1
This specification is under the jurisdiction of ASTM Committee B10 on Reactive and Refractory Metals and Alloys and is the direct responsibility of Subcommittee
B10.01 on Titanium.
Current edition approved Nov. 1, 2019April 1, 2020. Published December 2019April 2020. Originally approved in 1999. Last previous edition approved in 20162019 as
B898 – 11 (2016).B898 – 19. DOI: 10.1520/B0898-19.10.1520/B0898-20.
2
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.
3
Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
www.asme.org.
4
Available from DLA Document Services, Building 4/D, 700 Robbins Ave., Philadelphia, PA 19111-5094, http://quicksearch.dla.mil.
5
Available from American Society for Nondestructive Testing (ASNT), P.O. Box 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http://www.asnt.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
B898 − 20
3.1.4 cladding operation, n—the production event, which results in the formation of the bond between the cladding and base
metal components, plus all related prebonding and post bonding operations, prior to supply to the purchaser.
3.1.5 interface, n—of the clad product, is that region of thickness in which the product transitions from essentially 100 % base
metal to 100 % cladding metal. Also known as bond or bond zone.
3.1.6 interlayer, n—a metal layer of a type or grade different from the cladding metal and base metal, which is applied between
the cladding and base metal.
3.1.7 integrally and continuously bonded, adv—a condition in
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.