ASTM A789/A789M-00b

Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service

SCOPE
1.1 This specification covers grades of nominal wall thickness, stainless steel tubing for services requiring general corrosion resistance, with particular emphasis on resistance to stress corrosion cracking. These steels are susceptible to embrittlement if used for prolonged periods at elevated temperatures.  
Note 1—For tubing smaller than ½ in. [12.7 mm] in outside diameter, the elongation values given for strip specimens in Table 1 shall apply. Mechanical property requirements do not apply to tubing smaller than 1/8 in. [3.2 mm] in outside diameter or with walls thinner than 0.015 in. [0.4 mm].
1.2 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. The inch-pound units shall apply unless the Mdesignation of this specification is specified in the order.

General Information

• Status: Historical
• Publication Date: 09-Sep-2001
• ICS: 23.040.40 - Metal fittings
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.10 - Stainless and Alloy Steel Tubular Products

Relations

• Replaced By: ASTM A789/A789M-01 - Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service
• Effective Date: 10-Sep-2001
• Referred By: ASTM A1098/A1098M-18(2022) - Standard Specification for Welded Austenitic, Ferritic, Martensitic and Duplex Stainless Steel Boiler, Superheater, Condenser, and Heat Exchanger Tubes with Textured Surface(s)
• Effective Date: 10-Sep-2001
• Referred By: ASTM A1012-10(2021) - Standard Specification for Seamless and Welded Ferritic, Austenitic and Duplex Alloy Steel Condenser and Heat Exchanger Tubes With Integral Fins
• Effective Date: 10-Sep-2001
• Referred By: ASTM A1119/A1119M-23a - Standard Specification for Welded Partially Corrugated Stainless Steel Tube for Potable Water and General Service
• Effective Date: 10-Sep-2001
• Referred By: ASTM A1016/A1016M-18a - Standard Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel Tubes
• Effective Date: 10-Sep-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: A 789/A 789M – 00b An American National Standard
Standard Specification for
Seamless and Welded Ferritic/Austenitic Stainless Steel
Tubing for General Service
This standard is issued under the fixed designation A 789/A 789M; 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 and Hardness Requirements
1. Scope
Tensile Yield Elongation
Hardness, max
1.1 This specification covers grades of nominal wall thick-
Strength, Strength, in 2 in. or
UNS Designation
ness, stainless steel tubing for services requiring general
Rock-
min, ksi min, ksi 50 mm,
Brinell
well C
[MPa] [MPa] min, %
corrosion resistance, with particular emphasis on resistance to
stress corrosion cracking. These steels are susceptible to
S31803 90 [620] 65 [450] 25 290 30.5
S32205 90 [620] 65 [450] 25 290 30.5
embrittlement if used for prolonged periods at elevated tem-
S32205 90 [620] 65 [450] 25 290 30.5
peratures.
S32205 95 [655] 70 [485] 25 290 30.5
S31500 92 [630] 64 [440] 30 290 30.5
NOTE 1—For tubing smaller than ⁄2in. [12.7 mm] in outside diameter,
S32550 110 [760] 80 [550] 15 297 31.5
the elongation values given for strip specimens in Table 1 shall apply.
S31200 100 [690] 65 [450] 25 280 . . .
A
Mechanical property requirements do not apply to tubing smaller than
S31260 100 [690] 65 [450] 25 290 30.5
⁄8in. [3.2 mm] in outside diameter or with walls thinner than 0.015 in. [0.4
S32304
OD 1 in. [25 mm] and
mm].
Under 100 [690] 65 [450] 25 . . . . . .
1.2 The values stated in either inch-pound units or SI units
OD over 1 in. [25 mm] 87 [600] 58 [400] 25 290 30.5
S39274 116 [800] 80 [550] 15 310 . . .
are to be regarded separately as standard. Within the text, the
S32750 116 [800] 80 [550] 15 310 32
SI units are shown in brackets. The values stated in each
S32760 109 [750] 80 [550] 25 300 . . .
system are not exact equivalents; therefore, each system must
S32900 90 [620] 70 [485] 20 271 28
be used independently of the other. Combining values from the
B
S32950 100 [690] 70 [480] 20 290 30.5
two systems may result in nonconformance with the specifi-
S39277 120 [825] 90 [620] 25 290 30
cation. The inch-pound units shall apply unless the M desig-
S32520 112 [770] 80 [550] 25 310 . . .
A
nation of this specification is specified in the order.
Prior to A 789/A 789M – 87, the values for S31260 were: 92 ksi tensile
strength, 54 ksi yield strength, and 30 % elongation.
B
2. Referenced Documents Prior to A 789/A 789M – 89, the tensile strength value was 90 ksi for UNS
S32950.
2.1 ASTM Standards:
A 450/A 450M Specification for General Requirements for
3. Ordering Information
Carbon, Ferritic Alloy, and Austenitic Alloy Steel Tubes
3.1 Orders for material under this specification should
A 480/A 480M Specification for General Requirements for
include the following, as required, to describe the desired
Flat-Rolled Stainless and Heat-Resisting Steel Plate,
material adequately:
Sheet, and Strip
3 3.1.1 Quantity (feet, metres, or number of lengths),
E 527 Practice for Numbering Metals and Alloys (UNS)
5 3.1.2 Name of material (seamless or welded tubes),
2.2 SAE Standard:
3.1.3 Grade (see Table 2),
SAE J 1086
3.1.4 Size (outside diameter and nominal wall thickness),
3.1.5 Length (specific or random),
3.1.6 Optional requirements (product analysis for welded
tubes, Section 8; hydrostatic test or nondestructive electric test,
Section 10),
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee
3.1.7 Test report required (section on inspection of Specifi-
A01.10 on Stainless and Alloy Steel Tubular Products.
cation A 450/A 450M),
Current edition approved Oct. 10, 2000. Published January 2001. Originally
3.1.8 Specification designation, and
published as A 789 – 81. Last previous edition A 789/A 789M – 00a.
3.1.9 Special requirements.
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
cation SA–789 in Section II of that Code.
Annual Book of ASTM Standards, Vol 01.01.
4. General Requirements
Annual Book of ASTM Standards, Vol 01.03.
5 4.1 Material furnished under this specification shall con-
Available from Society of Automotive Engineers, 400 Commonwealth Drive,
Warrendale, PA 15096. form to the applicable requirements of Specification A 450/
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
A 789/A 789M
TABLE 2 Chemical Requirements
UNS
C Mn P S Si Ni Cr Mo N Cu Others
A
Designation
S31803 0.030 max 2.0 max 0.030 max 0.020 max 1.0 max 4.50–6.50 21.0–23.0 2.50–3.50 0.08–0.20 . .
S32205 0.030 max 2.00 max 0.030 max 0.020 max 1.00 max 4.5–6.5 22.0–23.0 3.0–3.5 0.14–0.20 . .
S31500 0.030 max 1.20–2.00 0.030 max 0.030 max 1.40–2.00 4.25–5.25 18.0–19.0 2.50–3.00 0.05–0.1 . .
S32550 0.040 1.5 max 0.040 max 0.030 max 1.0 max 4.50–6.50 24.0–27.0 2.90–3.90 0.10–0.25 1.5–2.5 .
S31200 0.030 max 2.0 max 0.045 max 0.030 max 1.0 max 5.50–6.50 24.0–26.0 1.20–2.00 0.14–0.20 . .
S31260 0.030 max 1.00 max 0.030 max 0.030 max 0.75 max 5.50–7.50 24.0–26.0 2.50–3.50 0.10–0.30 0.20–0.80 W 0.10–0.50
S32304 0.030 max 2.50 max 0.040 max 0.040 max 1.0 max 3.0–5.5 21.5–24.5 0.05–0.60 0.05–0.20 0.05–0.60 . . .
S39274 0.030 max 1.0 max 0.030 max 0.020 max 0.80 max 6.0–8.0 24.0–26.0 2.50–3.50 0.24–0.32 0.20–0.80 W 1.50–2.50
S32750 0.030 max 1.2 max 0.035 max 0.020 max 0.8 max 6.0–8.0 24.0–26.0 3.0–5.0 0.24–0.32 0.5 max . . .
S32760 0.05 max 1.00 max 0.030 max 0.010 max 1.00 max 6.00–8.00 24.00–26.00 3.00–4.00 0.20–0.30 0.50–1.00 W 0.50–1.00
B
40 min
S32900 0.08 max 1.00 max 0.040 max 0.030 max 0.75 max 2.50–5.00 23.00–28.00 1.00–2.00 . . . . . . . . .
S32950 0.03 max 2.00 max 0.035 max 0.010 max 0.60 max 3.50–5.20 26.00–29.00 1.00–2.50 0.15–0.35 . . . . . .
S39277 0.025 max 0.80 max 0.025 max 0.002 max 0.80 max 6.50–8.00 24.00–26.00 3.00–4.00 0.23–0.33 1.2–2.0 W 0.8–1.2
S32520 0.030 max 1.50 max 0.035 max 0.020 max 0.80 max 5.5–8.0 23.0–25.0 3.0–5.0 0.20–0.35 0.50–3.00 . . .
A
New designation established in accordance with Practice E 527 and SAE J1086.
B
%Cr+3.3 3 %Mo+163 %N.
A 450M, unless otherwise provided herein. 7. Chemical Composition
7.1 The steel shall conform to the chemical requirements
5. Manufacture
prescribed in Table 2.
5.1 The tubes shall be made by the seamless or welded
process with no filler metal added.
8. Product Analysis
6. Heat Treatment 8.1 An analysis of either one billet or one length of
flat-rolled stock or one tube shall be made from each heat. The
6.1 All tubes shall be furnished in the heat-treated condition
chemical composition thus determined shall conform to the
in accordance with the procedures shown in Table 3. For
requirements specified.
seamless tubes, as an alternate to final heat treatment in a
8.2 A product analysis tolerance of Table labeled A1.1 in
continuous furnace or batch-type furnace, immediately follow-
Specification A 480/A 480M shall apply. The product analysis
ing hot forming while the temperature of the tubes is not less
tolerance is not applicable to the carbon content for material
than the specified minimum solution treatment temperature,
with a specified maximum carbon of 0.04 % or less.
tubes may be individually quenched in water or rapidly cooled
8.3 If the original test for product analysis fails, retests of
by other means.
two additional billets, lengths of flat-rolled stock, or tubes shall
be made. Both retests for the elements in question shall meet
TABLE 3 Heat Treatment
the requirements of this specification; otherwise, all remaining
UNS
Temperature Quench
material in the heat or lot (see Note 2) shall be rejected or, at
Designation
the option of the producer, each billet or tube may be
S31803 1870–2010°F rapid cooling in air or water
individually tested for acceptance. Billets, lengths of flat-rolled
[1020–1100°C]
S32205 1870–2010°F rapid cooling in air or water
stock, or tubes that do not meet the requirements of this
[1020–1100°C]
specification shall be rejected.
S31500 1800–1900°F rapid cooling in air or water
[980–1040°C]
NOTE 2—For flange and flaring requirements, the term lot applies to all
S32550 1900°F rapid cooling in air or water
tubes prior to cutting of the same nominal size and wall thickness that are
[1040°C] min
produced from the same heat of steel. When final heat treatment is in a
S31200 1920–2010°F rapid cooling in water
[1050–1100°C]
batch-type furnace, a
...