ASTM B872-96(2003)
(Specification)Standard Specification for Precipitation-Hardening Nickel-Iron-Chromium- Columbium (Nb)-Titanium-Aluminum Alloy (UNS N09908) Plate, Sheet, and Strip
Standard Specification for Precipitation-Hardening Nickel-Iron-Chromium- Columbium (Nb)-Titanium-Aluminum Alloy (UNS N09908) Plate, Sheet, and Strip
SCOPE
1.1 This specification covers rolled precipitation hardenable nickel-iron-chromium-columbium (Nb)-titanium-aluminum alloy (N09908) plate, sheet, and strip in the annealed condition (temper). This alloy is used as sheathing for super conductor cables, as tooling for fabrication of such cables, and for other applications requiring a material with low coefficient-of-expansion properties.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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 become familiar with all hazards including those identified in the appropriate Material Safety Data Sheet for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact ASTM
International (www.astm.org) for the latest information.
Designation: B 872 – 96 (Reapproved 2003)
Standard Specification for
Precipitation-Hardening Nickel-Iron-Chromium-Columbium
(Nb)-Titanium-Aluminum Alloy (UNS N09908) Plate, Sheet,
and Strip
This standard is issued under the fixed designation B872; 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 (e) indicates an editorial change since the last revision or reapproval.
TABLE 1 Product Description
1. Scope
Product Thickness, in. (mm) Width
1.1 This specification covers rolled precipitation hardenable
A B
3 1
Hot-rolled plate ⁄16 to 2 ⁄4 (4.8 to 57.2) (Table 4) Table 6 and
nickel-iron-chromium-columbium(Nb)-titanium-aluminumal-
Table 7
loy (N09908) plate, sheet, and strip in the annealed condition
C
Cold-rolled sheet 0.010 to 0.250 (0.25 to 6.4), incl Table 8
(temper). This alloy is used as sheathing for super conductor
(Table 5)
C
Cold-rolled strip 0.005 to 0.250 (0.13 to 6.4), incl Table 8
cables, as tooling for fabrication of such cables, and for other
(Table 5)
applications requiring a material with low coefficient-of-
A
3 1
Material ⁄16 to ⁄4 in. (4.8 to 6.4 mm), incl, in thickness may be furnished as
expansion properties.
sheet or plate provided the material meets the specification requirements for the
1.2 The values stated in inch-pound units are to be regarded
condition ordered.
B
Hot-rolled plate, in widths 10 in. (250 mm) and under, may be furnished as
as the standard. The values given in parentheses are for
hot-finished rectangles with sheared or cut edges provided the mechanical
information only.
property requirements of this specification are met.
C
1.3 This standard does not purport to address all of the
Material under 48 in. (1219 mm) in width may be furnished as sheet or strip
provided the material meets the specification requirements for the condition
safety concerns, if any, associated with its use. It is the
ordered.
responsibility of the user of this standard to become familiar
with all hazards including those identified in the appropriate
Material Safety Data Sheet for this product/material as pro-
4. Ordering Information
vided by the manufacturer, to establish appropriate safety and
health practices, and determine the applicability of regulatory
4.1 Orders for material under this specification should
limitations prior to use. include the following information:
4.1.1 Alloy—Name or UNS number (see Table 2).
2. Referenced Documents
4.1.2 ASTM designation and year of issue.
2.1 ASTM Standards:
4.1.3 Condition—See 6.1 and Appendix X1.
E8 Test Methods for Tension Testing of Metallic Materials
4.1.4 Finish—See Appendix X1.
E29 Practice for Using Significant Digits in Test Data to
4.1.5 Dimensions—Thickness, width, and length.
Determine Conformance with Specifications
4.1.6 Quantity.
E228 Test Method for Linear Thermal Expansion of Solid
4.1.7 Optional Requirements:
Materials with a Vitreous Silica Dilatometer
4.1.7.1 Sheet and Strip—Whether to be furnished in coil, in
E1473 Test Methods for Chemical Analysis of Nickel,
cut straight lengths, or in random straight lengths.
Cobalt, and High-Temperature Alloys
4.1.7.2 Strip—Whethertobefurnishedwithcommercialslit
edge, square edge, or round edge.
3. Terminology
4.1.7.3 Plate—Whether to be furnished specially flattened
3.1 Definitions of Terms Specific to This Standard:
(see 7.7); also how plate is to be cut (see 7.2.1 and 7.3.2).
3.1.1 The terms given in Table 1 shall apply.
4.1.8 Fabrication Details—Not mandatory but helpful to
the manufacturer:
4.1.8.1 Welding or Brazing—Process to be employed.
This specification is under the jurisdiction of ASTM Committee B02 on
4.1.8.2 Plate—Whether material is to be hot-formed.
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
4.1.9 Certification—State if certification or a report of test
B02.07 on Refined Nickel and Cobalt and Their Alloys.
results is required (see Section 15).
Current edition approved Nov. 1, 2003. Published November 2003. Originally
approved in 1996. Last previous edition approved in 1996 as B872–96.
4.1.10 Samples for Product (Check) Analysis—Whether
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
samples should be furnished (see 5.2).
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
4.1.11 Purchaser Inspection—If the purchaser wishes to
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. witness the tests or inspection of material at the place of
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact ASTM
International (www.astm.org) for the latest information.
B 872 – 96 (2003)
TABLE 2 Chemical Requirements
7.1.1.1 For use with Table 4, plate shall be assumed to
3 3
Product (Check) Analysis weigh 0.292 lb/in. (8.08 g/cm ).
Composition Limits, % Variations, Under min or
Element 7.1.2 Sheet and Strip—The permissible variations in thick-
N09908 Over max, of the Specified
ness of sheet and strip shall be as prescribed in Table 5. The
Limit of Element
thickness of strip and sheet shall be measured with the
Nickel 47.0 min 0.35
51.0 max 0.35 micrometer spindle ⁄8 in. (9.5 mm) or more from either edge
Chromium 3.75 min 0.10
for material 1 in. (25.4 mm) or over in width and at any place
4.5 max 0.10
A on the strip under 1 in. in width.
Iron remainder .
Manganese, max 1.0 0.03
7.2 Width or Diameter:
Carbon, max 0.03 0.01
7.2.1 Plate—The permissible variations in width of rectan-
Copper, max 0.5 0.03
Silicon, max 0.5 0.03 gular plates and diameter of circular plates shall be as
Sulfur, max 0.005 0.003
prescribed in Table 6 and Table 7.
Aluminum 0.75 min 0.10
1.25 max 0.10 7.2.2 Sheet and Strip—The permissible variations in width
Titanium 1.20 min 0.05
for sheet and strip shall be as prescribed in Table 8.
1.80 max 0.05
7.3 Length:
Columbium (Nb) 2.7 min 0.10
3.3 max 0.15
7.3.1 Sheet and strip of all sizes may be ordered to cut
Phosphorus 0.015 max 0.005
lengths, in which case a variation of ⁄8 in. (3.2 mm) over the
Boron 0.012 max 0.005
Cobalt 0.5 max 0.03 specified length shall be permitted.
A
Iron shall be determined arithmetically by difference. 7.3.2 Permissible variations in length of rectangular plate
shall be as prescribed in Table 9.
7.4 Straightness:
manufacture,thepurchaseordermustsostateindicatingwhich
tests or inspections are to be witnessed (see Section 13). 7.4.1 The edgewise curvature (depth of chord) of flat sheet,
strip, and plate shall not exceed 0.05 in. multiplied by the
5. Chemical Composition
length of the product in feet (0.04 mm multiplied by the length
5.1 The material shall conform to the requirements as to of the product in centimetres).
chemical composition prescribed in Table 2.
7.4.2 Straightness for coiled strip material is subject to
5.2 If a product (check) analysis is performed by the
agreement between the manufacturer and the purchaser.
purchaser, the material shall conform to the product (check)
7.5 Edges:
analysis variations prescribed in Table 2.
7.5.1 When finished edges of strip are specified in the
contract or purchase order, the following descriptions shall
6. Mechanical and Other Requirements
apply:
6.1 Tensile Properties—The material after precipitation
7.5.1.1 Square-edge strip shall be supplied with finished
hardening shall conform to the tensile properties prescribed in
edges, with sharp, square corners, and without bevel or
Table 3.
rounding.
6.2 Coeffıcient of Thermal Expansion:
7.5.1.2 Round-edge strip shall be supplied with finished
6.2.1 The mean coefficient of thermal expansion from 77°F
−6 edges, semicircular in form, and the diameter of the circle
(25°C) to 1292°F (700°C) shall not exceed 7.8 310 in./
−6
forming the edge being equal to the strip thickness.
in./°F (14.0 310 cm/cm/°C).
7.5.1.3 When no description of any required form of strip
6.2.2 The inflection temperature shall not exceed 572°F
edge is given, it shall be understood that edges such as those
(300°C).
resulting from slitting or shearing will be acceptable.
7. Dimensions and Permissible Variations
7.5.1.4 Sheet shall have sheared or slit edges.
7.1 Thickness and Weight:
7.5.1.5 Plate shall have sheared or cut (machined, abrasive-
7.1.1 Plate—The permissible variation under the specified
cut, powder-cut, or inert-arc-cut) edges, as specified.
thickness and permissible excess in overweight shall not
7.6 Squareness (Sheet)—For sheets of all thicknesses, the
exceed the amounts prescribed in Table 4. 1
angle between adjacent sides shall be 90 6 0.15° ( ⁄16 in. in 24
in.) (1.6 mm in 610 mm).
A
TABLE 3 Tensile Properties for Plate, Sheet, and Strip
7.7 Flatness—Standard flatness tolerances for plate shall
Yield Strength Elongation in 2 in.
conformtotherequirementsprescribedinTable10.“Specially
Nominal Thickness, Tensile Strength,
(0.2 % offset), or 50 mm (or 4D),
in. (mm) min, ksi (MPa) flattened” plate, when so specified, shall have permissible
min, ksi (MPa) min %
variations in flatness as agreed upon between the manufacturer
Up to 1.0 (25.4), incl 170 (1172) 120 (827) 12
Over 1.0 to 2.25 (25.4 170 (1172) 120 (827) 10
and purchaser.
to 57.2), incl
8. Workmanship, Finish, and Appearance
A
Material shall be supplied in the annealed condition (temper). The manufac-
turershalldemonstratethatannealedmaterialiscapableofmeetingtheproperties
8.1 The material shall be uniform in quality and temper,
prescribed in Table 3 after precipitation heat treatment. Precipitation heat treat-
smooth, commercially straight or flat, and free of injurious
ment shall consist of heating to 1292°F (700°C), holding at temperature for 50 h,
and then air cooling. imperfections.
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact ASTM
International (www.astm.org) for the latest information.
B 872 – 96 (2003)
TABLE 4 Permissible Variations in Thickness and Overweight of Rectangular Plates
NOTE 1—All plates shall be ordered to thickness and not to weight per square foot (centimetre). No plates shall vary more than 0.01 in. (0.25 mm)
A
under the thickness ordered, and the overweight of each lot in each shipment shall not exceed the amount in the table. Spot grinding is permitted to
remove surface imperfections, such spots not to exceed 0.01 in. (0.25 mm) under the specified thickness.
BC
Permissible Excess in Average Weight per Square Foot of Plates for Widths Given in Inches (Millimetres) Expressed in Percent-
age of Nominal Weights
Specified Thickness,
48 to 60 60 to 72 72 to 84 84 to 96 96 to 108 108 to 120 120 to 132 132 to 144 144 to 160
in. (mm)
Under 48
(1220 to (1520 to (1830 to (2130 to (2440 to (2740 to (3050 to (3350 to (3660 to
(1220)
1520), excl 1830), excl 2130), excl 2440), excl 2740), excl 3050), excl 3350), excl 3660), excl 4070), incl
3 5
⁄16 to ⁄16 (4.8 to 7.9), excl 9.0 10.5 12.0 13.5 15.0 16.5 18.0 . . .
5 3
⁄16 to ⁄8 (7.9 to 9.5), excl 7.5 9.0 10.5 12.0 13.5 15.0 16.5 18.0 . .
3 7
⁄8 to ⁄16 (9.5 to 11.1), excl 7.0 7.5 9.0 10.5 12.0 13.5 15.0 16.5 18.0 19.5
7 1
⁄16 to ⁄2 (11.1 to 12.7), excl 6.0 7.0 7.5 9.0 10.5 12.0 13.5 15.0 16.5 18.0
1 5
⁄2 to ⁄8 (12.7 to 15.9), excl 5.0 6.0 7.0 7.5 9.0 10.5 12.0 13.5 15.0 16.5
5 3
⁄8 to ⁄4 (15.9 to 19.1), excl 4.5 5.5 6.0 7.0 7.5 9.0 10.5 12.0 13.5 15.0
⁄4 to 1 (19.1 to 25.4), excl 4.0 4.5 5.5 6.0 7.0 7.5 9.0 10.5 12.0 13.5
1to2 ⁄4 (25.4 to 57.2), incl 5.0 5.0 5.5 6.5 7.0 8.0 8.5 10.0 11.5 13.0
A
The term “lot” applied to this table means all of the plates of each group width and each group thickness.
B
The permissible overweight for lots of circular and sketch plates shall be 25 % greater than the amounts given in this table.
C
The weight of individual plates shall not exceed the nominal weight by more than 1 ⁄4 times the amount given in this table and Table Footnote B.
TABLE 5 Permissible Variations in Thickness of Sheet and Strip
NOTE 1—Permissible variations, plus and minus, in thickness, in. (mm), for widths given in in. (mm).
Sheet
Hot-Rolled Cold-Rolled
Specified Thickness, in. (mm)
Over 48 to 60 (1220 to 1520), Over 48 to 60 (1220 to
A A
48 (1220) and Under 48 (1220) and Under
A A
incl 1520), incl
0.018 to 0.025 (0.46 to 0.64), incl 0.003 (0.08) 0.004 (0.10) 0.002 (0.05) 0.003 (0.08)
Over 0.025 to 0.034 (0.64 to 0.86), incl 0.004 (0.10) 0.005 (0.13) 0.003 (0.08) 0.004 (0.10)
Over 0.034 to 0.043 (0.86 to 1.1), incl 0.005 (0.13) 0.006 (0.15) 0.004 (0.10) 0.005 (0.13)
Over 0.043 to 0.056 (1.1 to 1.4), incl 0.005 (0.13) 0.006 (0.15) 0.004 (0.10) 0.005 (0.13)
Over 0.056 to 0.070 (1.4 to 1.8), incl 0.006 (0.15) 0.007 (0.18) 0.005 (0.13) 0.006 (0.15)
Over 0.070 to 0.078 (1.8 to 2.0), incl 0.007 (0.18) 0.008 (0.20) 0.006 (0.15) 0.007 (0.18)
Over 0.078 to 0.093 (2.0 to 2.4), incl 0.008 (0.20) 0.009 (0.23) 0.007 (0.18) 0.008 (0.20)
Over 0.093 to 0.109 (2.4 to 2.8), incl 0.009 (0.23) 0.010 (0.25) 0.007 (0.18) 0.009 (0.23)
Over 0.109 to 0.125 (2.8 to 3.2), incl 0.010 (0.25) 0.012 (0.31) 0.008 (0.20) 0.010 (0.25)
Over 0.125 to 0.140 (3.2 to 3.6), incl 0.012 (0.31) 0.014 (0.36) 0.008 (0.20) 0.010 (0.25)
Over 0.140 to 0.171 (3.6 to 4.3), incl 0.014 (0.36) 0.016 (0.41) 0.009 (0.23) 0.012 (0.31)
Over 0.171 to 0.187 (4.3 to 4.8), incl 0.015 (0.38) 0.017 (0.43) 0.010 (0.25) 0.013 (0.33)
Over 0.187 to 0.218 (4.8 to 5.5), incl 0.017 (0.43) 0.019 (0.48) 0.011 (0.28) 0.015 (0.38)
Over 0.218 to 0.234 (5.5 to 5.9), incl 0.018 (0.46) 0.020 (0.51) 0.012 (0.31) 0.016 (0.41)
Over 0.234 to 0.250 (5.9 to 6.4), incl 0.020 (0.51) 0.022 (0.56) 0.013 (0.33) 0.018 (0.46)
Cold-Rolled Strip
A
Specified Thickness, in. (mm) Widths 12 in. (305 mm) and Under, 6
Up to 0.050 (1.3), incl 0.0015 (0.04)
Over 0.050 to 0.093 (1.3 to 2.4), incl 0.0025 (0.06)
B
Over 0.093 to 0.125 (2.4 to 3.2), incl 0.004 (0.11)
A
Measured ⁄8 in. (9.5 mm) or more from either edge except for strip under 1 in. (25.4 mm) in width, which is measured at any place.
B
Standard sheet tolerances apply for thicknesses over 0.125 in. (3.2 mm) and for all thicknesses of strip over 12 in. (305 mm) wide.
9. Sampling 9.2.1.1 Product (Check) Analysis shall be wholly the re-
sponsibility of the purchaser.
9.1 Lot—Definition:
9.2.2 Tension and Coeffıcient of Thermal Expansion
9.1.1 A lot for chemical analysis shall consist of one heat.
Testing—Samples of the material to provide test specimens for
9.1.2 A lot for tension testing shall consist of all material
tension and coefficient of thermal expansion testing shall be
from the same heat, nominal thickness, and cond
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