ASTM A887-89(2004)
(Specification)Standard Specification for Borated Stainless Steel Plate, Sheet, and Strip for Nuclear Application
Standard Specification for Borated Stainless Steel Plate, Sheet, and Strip for Nuclear Application
ABSTRACT
This specification covers chromium-nickel stainless steel plate, sheet, and strip, modified by the addition of natural or enriched boron, for nuclear application. The austenitic chromium-nickel steels shall be solution annealed to meet the mechanical property requirements. The chemical analysis of representative material shall be performed to determine the required percentage of chemical elements. The tensile and hardness property requirements of the materials are presented. In the case of sheet or strip produced in coil form, two or more hardness test; one impact test, when required; and one or more tension test shall be made on specimens taken from each coil. In the case of sheet, strip, or plate produced in cut lengths, one tension test; one impact test, when required; and one or more hardness tests shall be made on each 100 or less pieces of the same heat and nominal thickness rolled separately or continuously and heat treated within the same operating period, either as a lot or continuously.
SCOPE
1.1 This specification covers chromium-nickel stainless steel plate, sheet, and strip, modified by the addition of natural or enriched boron, for nuclear application.
1.2 Borated stainless steels covered by this specification, because of their particular alloy content and specialized properties, may require special care in their fabrication and welding. Specific procedures are of fundamental importance, and it is presupposed that all parameters will be in accordance with approved methods capable of producing the desired properties in the finished fabrication.
1.3 The values stated in inch-pound units are to be regarded as the standard. SI units are provided for information only.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: A 887 – 89 (Reapproved 2004)
Standard Specification for
Borated Stainless Steel Plate, Sheet, and Strip for Nuclear
Application
This standard is issued under the fixed designation A 887; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Ordering Information
1.1 This specification covers chromium-nickel stainless 4.1 Orders for material under this specification shall include
steel plate, sheet, and strip, modified by the addition of natural the information specified in the Ordering Information section
or enriched boron, for nuclear application. of Specification A 480/A 480M.
1.2 Borated stainless steels covered by this specification,
5. Process
because of their particular alloy content and specialized prop-
5.1 If a specific type of melting is required by the purchaser,
erties, may require special care in their fabrication and weld-
ing. Specific procedures are of fundamental importance, and it it shall be stated on the purchase order.
5.2 When specified on the purchase order, or when a
is presupposed that all parameters will be in accordance with
approved methods capable of producing the desired properties specific type of melting has been specified on the purchase
order,thematerialmanufacturershallindicateonthetestreport
in the finished fabrication.
1.3 The values stated in inch-pound units are to be regarded the type of melting used to produce the material.
as the standard. SI units are provided for information only.
6. Heat Treatment
2. Referenced Documents
6.1 The austenitic chromium-nickel steels shall be solution-
annealed to meet the mechanical property requirements of this
2.1 ASTM Standards:
A 370 Test Methods and Definitions for MechanicalTesting specification. Solution-annealing shall consist of heating the
material to a temperature of 1900°F (1040°C) minimum for an
of Steel Products
A 480/A 480M Specification for General Requirements for appropriate time followed by water quenching or rapidly
Flat-Rolled Stainless and Heat-Resisting Steel Plate, cooling by other means.
Sheet, and Strip
7. Material Test Report
A 751 Test Methods, Practices, and Terminology for
7.1 A report of the results of all tests required by this
Chemical Analysis of Steel Products
specification and the type of melting used shall be supplied to
3. Terminology
the purchaser.
3.1 Definitions of Terms Specific to This Standard:
8. Chemical Composition
3.1.1 plate—material ⁄16 in. (4.8 mm) and over in thickness
8.1 Thechemicalanalysisofrepresentativematerialshallbe
and over 10 in. (250 mm) in width.
performed, as agreed upon between the purchaser and supplier,
3.1.2 sheet—material under ⁄16 in. (5.0 mm) in thickness
to determine the percentages of the elements identified inTable
and 24 in. (600 mm) and over in width.
1. The chemical composition thus determined shall be reported
3.1.3 strip—material under ⁄16 in. (5.0 mm) in thickness
to the purchaser, or his representative, and shall conform to the
and under 24 in. (600 mm) in width.
requirements specified in Table 1.
8.2 When a product (check or verification) analysis is
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
performed, the chemical composition thus determined may
Stainless Steel, and RelatedAlloys, and is the direct responsibility of Subcommittee
vary from the specified limits by the amounts shown in Table
A01.17 on Flat-Rolled and Wrought Stainless Steel.
1, Product Analysis Tolerances, of Specification A 480/
Current edition approved Sept. 1, 2004. Published September 2004. Originally
approved in 1988. Last previous edition approved in 2000 as A 887 – 89 (2000).
A 480M.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
8.3 Methods and practices relating to chemical analysis
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
required by this specification shall be in accordance with Test
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. Methods, Practices, and Terminology A 751.
Copyright ©ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA19428-2959, United States.
A 887 – 89 (2004)
A
TABLE 1 Chemical Requirements Composition
UNS Type Carbon Manganese Phosphorous Sulfur Silicon Chromium Nickel Boron Other
B
Designation Elements
S30460 304B 0.08 2.00 0.045 0.030 0.75 18.00–20.00 12.00–15.00 0.20–0.29 N 0.10 max
S30461 304B1 0.08 2.00 0.045 0.030 0.75 18.00–20.00 12.00–15.00 0.30–0.49 N 0.10 max
S30462 304B2 0.08 2.00 0.045 0.030 0.75 18.00–20.00 12.00–15.00 0.50–0.74 N 0.10 max
S30463 304B3 0.08 2.00 0.045 0.030 0.75 18.00–20.00 12.00–15.00 0.75–0.99 N 0.10 max
S30464 304B4 0.08 2.00 0.045 0.030 0.75 18.00–20.00 12.00–15.00 1.00–1.24 N 0.10 max
S30465 304B5 0.08 2.00 0.045 0.030 0.75 18.00–20.00 12.00–15.00 1.25–1.49 N 0.10 max
S30466 304B6 0.08 2.00 0.045 0.030 0.75 18.00–20.00 12.00–15.00 1.50–1.74 N 0.10 max
S30467 304B7 0.08 2.00 0.045 0.030 0.75 18.00–20.00 12.00–15.00 1.75–2.25 N 0.10 max
A
Maximum, unless range or minimum is indicated.
B
Cobalt concentration shall be limited to 0.2 max, unless a lower concentration is agreed upon between the purchaser and the supplier.
TABLE 3 Impact Test Requirements
8.4 Boron determination not covered in Test Methods,
Practices, and Terminology A 751 shall be made as agreed
Type Grade Charpy V-Notch Energy,
upon between the purchaser and the supplier.
ft-lb (J), min
304B A 65 (88)
9. Mechanical Properties
B 40 (54)
9.1 Tensile Properties—The material shall conform to the 304B1 A 60 (81)
B 35 (47)
tensile property requirements specified in Table 2.
304B2 A 48 (65)
9.2 Hardness—The material shall conform to the hardness
B 16 (22)
304B3 A 38 (52)
requirements as specified in Table 2.
B 10 (14)
9.3 Grade—The grade of the material is defined by the
304B4 A 30 (41)
uniformity of the dispersion of the boron within the melt.
B .
304B5 A 23 (31)
Grade A corresponds to the near-optimal dispersion, while
B .
Grade B corresponds to a less-than-optimal dispersion of the
304B6 A 16 (22)
boron. Conventional wrought metallurgical practice conforms
B .
304B7 A 10 (14)
to Grade B properties. The quality of the boron dispersion is
B .
measured indirectly through the ductility requirements, as
specified in Table 2.
10. Special Tests
subsize impact test specimens are used, the applicable require-
ments shall be agreed upon between the purchaser and the
10.1 If any special tests are required that are pertinent to the
supplier.
intended application of the material ordered, they shall be
agreed upon between the supplier and the purchaser.
11. Dimensions and Permissible Variations
10.2 Charpy V-notch impact testing is not required unless it
is specified on the purchase order. If so specified, impact 11.1 Unless otherwise specified in the purchase order, ma-
testing shall be performed in accordance with Test Methods terial shall conform to the permissible tolerances shown in
and DefinitionsA 370. The impact test results thus determined Specification A 480/A 480M.
shall be reported to the purchaser, or his representative, and 11.2 Sheet, Strip, and Plate—Material with No. 1 finish
shall conform to the requirements specified in Table 3. If may be ground to remove surface imperfections, provided such
TABLE 2 Mechanical Test Requirements
UNS Type Grade Tensile Strength, min Yield Strength, min Elongation in 2 Hardness, max
Designation in.or50mm,
ksi MPa ksi MPa Brinell Rockwell B
min, %
S30460 304B A 75 515 30 205 40.0 201 92
B 75 515 30 205 40.0 20
...
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