ASTM A691/A691M-18a

Standard Specification for Carbon and Alloy Steel Pipe, Electric-Fusion-Welded for High-Pressure Service at High Temperatures

ABSTRACT
This specification covers carbon and alloy steel pipe, electric-fusion-welded with filler metal added, fabricated from pressure-vessel-quality plate of several analyses and strength levels and suitable for high-pressure service at high temperatures. Heat treatment may or may not be required to attain the desired mechanical properties. The pipes are classified according to steel grades and are designated in classes according to the type of heat treatment performed in the pipe manufacture, whether the weld is radiographically examined, and whether the pipe has been pressure tested. The steel welds shall be made either manually or automatically by an electric process involving the deposition of filler metal. The welded joints shall have positive reinforcement at the center of each side of the weld. The contour of this reinforcement shall be smooth, and the deposited metal shall be fused smoothly and uniformly into the plate surface. The joints shall undergo tension, bend and pressure tests. Unacceptable surface imperfections shall be removed by grinding or machining. The depression after grinding or machining shall be blended uniformly into the surrounding surface. Repair of weld and base metal defects shall be done by welding.
SCOPE
1.1 This specification2 covers carbon and alloy steel pipe, electric-fusion-welded with filler metal added, fabricated from pressure-vessel-quality plate of several analyses and strength levels and suitable for high-pressure service at high temperatures. Heat treatment may or may not be required to attain the desired mechanical properties or to comply with applicable code requirements. Supplementary requirements are provided for use when additional testing or examination is desired.  
1.2 The specification nominally covers pipe 16 in. [400 mm] in outside diameter and larger with wall thicknesses up to 3 in. [75 mm] inclusive. Pipe having other dimensions may be furnished provided it complies with all other requirements of this specification.  
1.3 Several grades and classes of pipe are provided.  
1.3.1 Grade designates the type of plate used as listed in Table 1.    
1.3.2 Class designates the type of heat treatment performed in the manufacture of the pipe, whether the weld is radiographically examined, and whether the pipe has been pressure tested as listed in 1.3.3.  
1.3.3 Class designations are as follows (Note 1):    
Class  
Heat Treatment on Pipe  
Radiography, see Section  
Pressure Test, see Section    
10  
none  
none  
none  
11  
none  
9  
none  
12  
none  
9  
8.3  
13  
none  
none  
8.3  
20  
stress relieved, see 5.3.1  
none  
none    
21  
stress relieved, see 5.3.1  
9  
none    
22  
stress relieved, see 5.3.1  
9  
8.3  
23  
stress relieved, see 5.3.1  
none  
8.3  
30  
normalized, see 5.3.2  
none  
none  
31  
normalized, see 5.3.2  
9  
none    
32  
normalized, see 5.3.2  
9  
8.3  
33  
normalized, see 5.3.2  
none  
8.3  
40  
normalized and tempered, see 5.3.3  
none  
none  
41  
normalized and tempered, see 5.3.3  
9  
none    
42  
normalized and tempered, see 5.3.3  
9  
8.3  
43  
normalized and tempered, see 5.3.3  
none  
8.3  
50  
quenched and tempered, see 5.3.4  
none  
none    
51  
quenched and tempered, see 5.3.4  
9  
none  
52  
quenched and tempered, see 5.3.4  
9  
8.3  
53  
quenched and tempered, see 5.3.4  
none  
8.3
Note 1: Selection of materials should be made with attention to temperature of service. For such guidance, Specification A20/A20M may be consulted.  
1.4 Optional requirements of a supplementary nature are provided, calling for additional tests and control of repair welding, when desired.  
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values st...

General Information

• Status: Historical
• Publication Date: 31-Oct-2018
• ICS: 23.040.10 - Iron and steel pipes
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.09 - Carbon Steel Tubular Products

Relations

• Replaces: ASTM A691/A691M-18 - Standard Specification for Carbon and Alloy Steel Pipe, Electric-Fusion-Welded for High-Pressure Service at High Temperatures
• Effective Date: 01-Nov-2018
• Replaced By: ASTM A691/A691M-19 - Standard Specification for Carbon and Alloy Steel Pipe, Electric-Fusion-Welded for High-Pressure Service at High Temperatures
• Effective Date: 01-Nov-2019
• Referred By: ASTM A530/A530M-18 - Standard Specification for General Requirements for Specialized Carbon and Alloy Steel Pipe
• Effective Date: 01-Nov-2018

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:A691/A691M −18a
Standard Specification for
Carbon and Alloy Steel Pipe, Electric-Fusion-Welded for
1
High-Pressure Service at High Temperatures
This standard is issued under the fixed designationA691/A691M; 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.
1. Scope*
Radiography, Pressure Test,
Class Heat Treatment on Pipe see Section see Section
2
1.1 This specification covers carbon and alloy steel pipe,
electric-fusion-welded with filler metal added, fabricated from 10 none none none
11 none 9 none
pressure-vessel-quality plate of several analyses and strength
12 none 98.3
levels and suitable for high-pressure service at high tempera-
13 none none 8.3
20 stress relieved, see 5.3.1 none none
tures. Heat treatment may or may not be required to attain the
21 stress relieved, see 5.3.1 9 none
desired mechanical properties or to comply with applicable
22 stress relieved, see 5.3.1 9 8.3
code requirements. Supplementary requirements are provided
23 stress relieved, see 5.3.1 none 8.3
30 normalized, see 5.3.2 none none
for use when additional testing or examination is desired.
31 normalized, see 5.3.2 9 none
1.2 The specification nominally covers pipe 16 in. [400 32 normalized, see 5.3.2 9 8.3
33 normalized, see 5.3.2 none 8.3
mm]inoutsidediameterandlargerwithwallthicknessesupto
40 normalized and tempered, see 5.3.3 none none
3 in. [75 mm] inclusive. Pipe having other dimensions may be
41 normalized and tempered, see 5.3.3 9 none
furnished provided it complies with all other requirements of 42 normalized and tempered, see 5.3.3 9 8.3
43 normalized and tempered, see 5.3.3 none 8.3
this specification.
50 quenched and tempered, see 5.3.4 none none
51 quenched and tempered, see 5.3.4 9 none
1.3 Several grades and classes of pipe are provided.
52 quenched and tempered, see 5.3.4 9 8.3
1.3.1 Grade designates the type of plate used as listed in
53 quenched and tempered, see 5.3.4 none 8.3
Table 1.
NOTE 1—Selection of materials should be made with attention to
1.3.2 Class designates the type of heat treatment performed
temperature of service. For such guidance, Specification A20/A20M may
in the manufacture of the pipe, whether the weld is radio-
be consulted.
graphically examined, and whether the pipe has been pressure
1.4 Optional requirements of a supplementary nature are
tested as listed in 1.3.3.
provided, calling for additional tests and control of repair
1.3.3 Class designations are as follows (Note 1):
welding, when desired.
1.5 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. Within the text, the
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
SI units are shown in brackets. The values stated in each
Stainless Steel and RelatedAlloysand is the direct responsibility of Subcommittee
system may not be exact equivalents; therefore, each system
A01.09 on Carbon Steel Tubular Products.
Current edition approved Nov. 1, 2018. Published November 2018. Originally
shall be used independently of the other. Combining values
approved in 1974. Last previous edition approved in 2018 as A691/A691M–18.
from the two systems may result in non-conformance with the
DOI: 10.1520/A0691_A0691M-18A.
2
standard. The inch-pound units shall apply unless the “M”
For ASME Boiler and Pressure Vessel Code applications, see related Specifi-
cation SA-691 in Section II of that Code. designation of this specification is specified in the order.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
A691/A691M−18a
TABLE 1 Plate Materials
A
ASTM Specification HB, max
Pipe Grade Type of Steel
Number Grade
CM-65 carbon-molybdenum steel A204/A204M A 201
CM-70 carbon-molybdenum steel A204/A204M B 201
CM-75 carbon-molybdenum steel A204/A204M C 201
CMSH-70 carbon-manganese-silicon steel, normalized A537/A537M 1
CMS-75 carbon-manganese-silicon steel A299/A299M . .
CMSH-80 carbon-manganese-silicon steel, quenched and tempered A537/A537M 2
1 1 1
⁄2 CR ⁄2 % chromium, ⁄2 % molybdenum steel A387/A387M 2 201
1
1CR 1 % chromium, ⁄2 % molybdenum steel A387/A387M 12 201
1 1 1
1 ⁄4 CR 1 ⁄4 % chromium, ⁄2 % molybdenum steel A387/A387M 11 201
1 1
2 ⁄4 CR 2 ⁄4 % chromium, 1 % molybdenum steel A387/A387M 22 201
3CR 3 % chromium, 1 % molybdenum steel A387/A387M 21 201
1
5CR 5 % chromium, ⁄2 % molybdenum steel A387/A387M 5 225
9CR 9 % chromium, 1 % molybdenum steel A387/A387M 9 241
C B
91 9 % chromiu
...

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: A691/A691M − 18 A691/A691M − 18a
Standard Specification for
Carbon and Alloy Steel Pipe, Electric-Fusion-Welded for
1
High-Pressure Service at High Temperatures
This standard is issued under the fixed designation A691/A691M; 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*
2
1.1 This specification covers carbon and alloy steel pipe, electric-fusion-welded with filler metal added, fabricated from
pressure-vessel-quality plate of several analyses and strength levels and suitable for high-pressure service at high temperatures.
Heat treatment may or may not be required to attain the desired mechanical properties or to comply with applicable code
requirements. Supplementary requirements are provided for use when additional testing or examination is desired.
1.2 The specification nominally covers pipe 16 in. [400 mm] in outside diameter and larger with wall thicknesses up to 3 in.
[75 mm] inclusive. Pipe having other dimensions may be furnished provided it complies with all other requirements of this
specification.
1.3 Several grades and classes of pipe are provided.
1.3.1 Grade designates the type of plate used as listed in Table 1.
1.3.2 Class designates the type of heat treatment performed in the manufacture of the pipe, whether the weld is radiographically
examined, and whether the pipe has been pressure tested as listed in 1.3.3.
1.3.3 Class designations are as follows (Note 1):
Radiography, Pressure Test,
Class Heat Treatment on Pipe see Section see Section
10 none none none
11 none 9 none
12 none 9 8.3
13 none none 8.3
20 stress relieved, see 5.3.1 none none
21 stress relieved, see 5.3.1 9 none
22 stress relieved, see 5.3.1 9 8.3
23 stress relieved, see 5.3.1 none 8.3
30 normalized, see 5.3.2 none none
31 normalized, see 5.3.2 9 none
32 normalized, see 5.3.2 9 8.3
33 normalized, see 5.3.2 none 8.3
40 normalized and tempered, see 5.3.3 none none
41 normalized and tempered, see 5.3.3 9 none
42 normalized and tempered, see 5.3.3 9 8.3
43 normalized and tempered, see 5.3.3 none 8.3
50 quenched and tempered, see 5.3.4 none none
51 quenched and tempered, see 5.3.4 9 none
52 quenched and tempered, see 5.3.4 9 8.3
53 quenched and tempered, see 5.3.4 none 8.3
NOTE 1—Selection of materials should be made with attention to temperature of service. For such guidance, Specification A20/A20M may be
consulted.
1.4 Optional requirements of a supplementary nature are provided, calling for additional tests and control of repair welding,
when desired.
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units
are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.09
on Carbon Steel Tubular Products.
Current edition approved March 1, 2018Nov. 1, 2018. Published March 2018November 2018. Originally approved in 1974. Last previous edition approved in 20142018
as A691/A691M – 09 (2014).A691/A691M – 18. DOI: 10.1520/A0691_A0691M-18.10.1520/A0691_A0691M-18A.
2
For ASME Boiler and Pressure Vessel Code applications, see related Specification SA-691 in Section II of that Code.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
A691/A691M − 18a
TABLE 1 Plate Materials
A
ASTM Specification HB, max
Pipe Grade Type of Steel
Number Grade
CM-65 carbon-molybdenum steel A204/A204M A 201
CM-70 carbon-molybdenum steel A204/A204M B 201
CM-75 carbon-molybdenum steel A204/A204M C 201
CMSH-70 carbon-manganese-silicon steel, normalized A537/A537M 1
CMS-75 carbon-manganese-silicon steel A299/A299M . . . . . .
CMSH-80 carbon-manganese-silicon steel, quenched and tempered A537/A537M 2
1 1 1
⁄2 CR ⁄2 % chromium, ⁄2 % molybdenum steel A387/A387M 2 201
1
1CR 1 % chromium, ⁄2 % molybdenum steel A387/A387M 12 201
1 1 1
1 ⁄4 CR 1 ⁄4 % chromium, ⁄2 % molybdenum steel A387/A387M 11 201
1 1
2 ⁄4 CR 2 ⁄4 % chromium, 1 % molybdenum steel A387/A387M 22 201
3CR 3 % chromium, 1 %
...