Specification for Aluminum-Zinc Alloy-Coated Wire Strand (Withdrawn 1995)

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ASTM A791/A791M-94 - Specification for Aluminum-Zinc Alloy-Coated Wire Strand (Withdrawn 1995)
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0759530 0544840 363
AMERICAN SOCIETY FOR TESTING AND MATERIALS
Cssignation. A 791/A 791M - 94
191 6 Race St. Philadelphia, Pa 191 03
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
If not listed in the current combined index, will appear in the next edition.
Standard Specification for
Welded Unannealed Ferritic Stainless Steel Tubing’
This standard is issued under the fixed designation A 791/A 79 1M; 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.
TABLE 1 Tensile Requirements
1. Scope
Tensile Elongation” in
1.1 This specification covers welded, unannealed, ferritic UNS Strength, min, Yield Strength,
Grade
min, ksi [MPa] in’r:n5i mm
Designation ksi fMPa,
stainless steel tubing intended for high-temperature and
. -2 .-
corrosive service where post-weld heat treatment is not
TP 409 540900 55 [380] 30 [205] 20
TP 439 540335
60 [415] 30 [205] 20
necessary for corrosion resistance. These grades are com-
TP XM-27 S44627 65 [450] 40 [275] 18
monly known as the “straight-chromium” types and are
TP XM-33 S44626
68[410] 45 [310] 20
characterized by being ferromagnetic. The high-chromium,
25-4-4 544635 90 [620] 75 [515] 12
26-3-3
944660 , 85 [585] 65 (4501 20
ferritic alloys are sensitive to notch-brittleness on slow
29-4 S44700 80 [550] 60 [415] 20
cooling to ordinary temperatures. These features should be
2942 S44800 80 [550] 60 [415] 20
recognized in the use of these materials. The user requiring 544400
18-2 60 I4151 35 [240] 20
294 S44735 75[515] 60[415] 12
additional testing or examination is referred to the Supple-
mentary Requirements or Ordering Information Section, or A For longitudinal strip tests, a deduction of 0.60 % for 294C, 0.90 % for
T6XM-27 and 1 .O0 % for aü other grades shall be made from the basic minimum
both. Users requiring a tubular product with post-weld heat
elongation for each in. L0.8 mm] decrease in wall thickness below %O in. [a
treatment are referred to Specification A 268/A 268M.
mm]. The following table gives the computed minimum values:
1.2 The values stated in either inch-pound units or SI
Wall Thickness In. mm
Elongation In 2 in. or 50 mm, min, %
units are to be regarded separately as standard. Within the
294C TP XM-27 All OthW
text, the SI units are shown in brackets. The values stated in
Grades
5/30 [0.312] 8
12 18 20
each system are not exact equivalènts; therefore, each system
9/32 [0.281] 7.2 11 ’ 17 19
must be used independently of the other. Combining values
114 [0.250] 6.4 11 16 18
from the two systems may result in nonconformance with
7/32 [0.219] 5.6 10 15 17
14 16
Y10 [0.188] 4,8 10
the specification. The inch-pound units shall apply unless the
%z [0.156]
4 9 13 15
“M” designation of this specification is specified in the order.
Va [0.125] i 3.2 8 13 14
3/32 [0.094]
2.4 8 12 13
%a [0.062] 1.6 7 11 12
NOTE 1-For tubing smaiier than V2 in. 112.7 mm] in outside
1.6 to 0.9 7 10 12
0.062 to 0.035, exd
diameter, the elongation values given for strip specimens in Table I shall
0.035 to 0.022, exd 0.9 to 0.6 7 10 11
apply. Mechanical property requirements do not apply to tubing smaller
0.022 to 0.015. exd 0.6 to 0.4 6
10 11
~ ~~~ ~~ -
than Vu in. [3.2 mm] in outside diameter or with wails thinner than
NOTE-The above table gives the computed minimum elongation values for
0.015 in. [0.4 mm].
each 1/12 in. [0.8 mm] decrease in wall thickness. Where the wall thickness lies
between two values shown above, the minimum elongation value shail be
detennined by the following equation:8
Grade 294 E = 19.2 t + 6.00 [E = 0.75t f 6.001
Grade TP XM-27 E = 28.8 t + 9.00 [E = 1.13 + 9.001
2. Referenced Documents
All Other Grades E 32 t + 10.00 [E = 1.251 + 10.001
ASTM Standards: where:
2.1
E = elongation in 2 in. or 50 mm. %, and
A 268fA 268M Specification for Seamless and Welded
t = actual thickness of specimen. In. [mm].
Ferritic and Martensitic Stainless Steel Tubing for
Calculated elongation requlrements shall be rounded to the nearest whole
number.
General Service2
A 45O/A 450M Specification for General Requirements
for Carbon, Femtic Alloy, and Austenitic Alloy Steel
SAE Standard4
Tubes2 SAE J 1086
A 763 Practices for Detecting Susceptibility to Inter-
3. General Requirements
granular Attack in Ferritic Stainless Steels3
3.1 Material furnished under this specification shall con-
E 527 Practice for Numbering Metals and Alloys (UNS)*
form to the applicable requirements of Specification A 4501
A 450M unless otherwise provided herein.
’ This specification is under the jurisdiction of ASTM Committee A-1 on Steel, 4. Ordering Information
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommitt
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