ASTM A1020/A1020M-01
(Specification)Standard Specification for Steel Tubes, Carbon and Carbon Manganese, Fusion Welded, for Boiler, Superheater, Heat Exchanger and Condenser Applications
Standard Specification for Steel Tubes, Carbon and Carbon Manganese, Fusion Welded, for Boiler, Superheater, Heat Exchanger and Condenser Applications
SCOPE
1.1 This specification covers minimum wall thickness welded tubes made from carbon and carbon manganese steels listed in , with various grades intended for use in boiler, superheater, heat exchanger, or condenser applications.
1.2 The tubing sizes and thicknesses usually furnished to this specification are 1/4 to 5 in. [6.3 to 127 mm] in outside diameter and 0.015 to 0.375 in. [0.4 to 9.5 mm], inclusive, in wall thickness. Tubing having other dimensions may be furnished provided such tubes comply with all other requirements of this specification.
1.3 Mechanical property requirements do not apply to tubing smaller than 1/8 in. [3.2 mm] in inside diameter or 0.015 in. [0.4 mm] in thickness.
1.4 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 "M" designation of the specification is specified in the order.
1.5 Optional supplementary requirements are provided and when desired, shall be so stated on the purchase order.
1.6 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 establish appropriate safety and health practices and determine the applicability of regulatory requirements prior to use.
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Designation: A 1020/A 1020M – 01
Standard Specification for
Steel Tubes, Carbon and Carbon Manganese, Fusion
Welded, for Boiler, Superheater, Heat Exchanger and
Condenser Applications
This standard is issued under the fixed designation A 1020/A 1020M; 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 Chemical Requirements, Composition, %
1. Scope
Element Grade A Grade C Grade D
1.1 This specification covers minimum wall thickness
Low Carbon Medium Carbon Carbon Manganese
welded tubes made from carbon and carbon manganese steels
Steel Steel Steel
listed in Table 1, with various grades intended for use in boiler,
Carbon 0.06–0.18 0.30 max 0.27 max
superheater, heat exchanger or condenser applications.
Manganese 0.27–0.63 0.80 max 1.00–1.50
Phosphorus 0.035 max 0.035 max 0.030 max
1.2 The tubing sizes and thicknesses usually furnished to
Sulfur 0.035 max 0.035 max 0.015 max
this specification are ⁄4 in. [6.3 mm] to 5 in. [127 mm] in
Silicon No Requirement No Requirement 0.10 min
outside diameter and 0.015 to 0.375 in. [0.4 to 9.5 mm],
inclusive, in wall thickness. Tubing having other dimensions
may be furnished provided such tubes comply with all other
3. Ordering Information
requirements of this specification.
1.3 Mechanical property requirements do not apply to
3.1 Orders for material under this specification should
tubing smaller than ⁄8 in. [3.2 mm] in inside diameter or 0.015
include the following, as required, to describe the desired
in. [0.4 mm] in thickness.
material adequately:
1.4 The values stated in either inch-pound units or SI units
3.1.1 Quantity (feet, meters, or number of lengths.
are to be regarded separately as standard. Within the text, the
3.1.2 Name of material (welded tubes).
SI units are shown in brackets. The values stated in each
3.1.3 Grade (Table 1).
system are not exact equivalents; therefore, each system must
3.1.4 Size (outside diameter and minimum wall thickness).
be used independently of the other. Combining values from the
3.1.5 Length (specific or random).
two systems may result in nonconformance with the specifi-
3.1.6 Optional requirements (product analysis, hydrostatic
cation. The inch-pound units shall apply unless the “M”
or nondestructive electric test, crush test and bar coding).
designation of the specification is specified in the order.
3.1.7 Test report required (see Certification Section of
1.5 Optional supplementary requirements are provided and
Specification A 450/A 450M).
when desired, shall be so stated on the purchase order.
3.1.8 Specification designation.
1.6 This standard does not purport to address all of the
3.1.9 Optional supplementary requirements are provided
safety concerns, if any, associated with its use. It is the
and when desired, shall be designated on the order.
responsibility of the user of this standard to establish appro-
4. General Requirements
priate safety and health practices and determine the applica-
bility of regulatory requirements prior to use.
4.1 Material furnished under this specification shall con-
form to the applicable requirements of the current edition of
2. Referenced Documents
Specification A 450/A 450M, unless otherwise provided
2.1 ASTM Standards:
herein.
A 450/A 450M Specification for General Requirements for
5. Materials and Manufacture
Carbon, Ferritic Alloy, and Austenitic Alloy Steel Tubes
E 213 Practice for Ultrasonic Examination of Metal Pipe
5.1 All steels shall be killed.
and Tubing
5.2 The tubes shall be made by an automatic fusion welding
E 273 Practice for Ultrasonic Examination of Longitudinal
process with no addition of filler metal.
Welded Pipe and Tubing
6. Heat Treatment
6.1 After welding, all tubes shall be heat treated at a
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
temperature of 1650°F [900°C] or higher and followed by
Stainless Steel and Related Alloysand is the direct responsibility of Subcommittee
cooling in air or in the cooling chamber of a controlled
A01.09on Carbon Steel Tubular Products.
Current edition approved June 10, 2001. Published August 2001. atmosphere furnace. Cold drawn tubes shall be heat treated
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
A 1020/A 1020M
TABLE 2 Tensile Requirements
after the final cold-draw pass at a temperature of 1200°F
[650°C] or higher. Grade C Grade D
Tensile strength, min, ksi, [MPa] 60 [415] 70 [485]
7. Chemical Composition
Yield strength, min, ksi, [MPa] 37 [255] 40 [275]
Elongation in 2 in. or 50 mm, min % 30 30
7.1 The steel shall conform to the requirements as to
A A
For elongation strip tests, a deduction for each ⁄32-in. [0.8 1.50 1.50
chemical composition prescribed in Table 1. 5
mm] decrease in wall thickness below ⁄16 in. [8 mm] from
the basic minimum elongation of the following percentage
7.2 When a grade is ordered under this specification, sup-
points shall be made.
plying an alloy grade that specifically requires the addition of
A
See Table 3 for the computed minimum values.
any element other than those listed in Table 1 is not permitted.
Note—For the purposes of design, the following tensile properties may be
assumed for Grade A tubes:
8. Product Analysis
Tensile strength, min, ksi, [MPa] 47 [325]
8.1 For the purpose of product analysis, a lot consists of 250
Yield strength, min, ksi, [MPa] 26 [180]
pieces for sizes up to and including 3 in. [76.2 mm] OD and Elongation in 2 in. or 50 mm, min, % 35
100 pieces for sizes over 3 in. [76.2 mm] OD; or when tubes
are identified by heat number, all tubes within that heat.
TABLE 3 Minimum Elongation Values
8.2 When requested on the purchase order, a product analy-
Elongation in 2 in. or
sis shall be made by the manufacturer or supplier from one tube
Wall Thickness
A
50 mm, min, %
per lot. The chemical composition thus determined shall
in. mm
conform to the requirements specified.
⁄16 (0.312) 8 30
8.3 If the original test for product analysis fails, retest of two
⁄32 (0.281) 7.2 29
additional tubes per lot shall be made. Both retests, for the
⁄4 (0.250) 6.4 27
⁄32 (0.219) 5.6 26
elements in question, shall meet the requirements of the
⁄16 (0.188) 4.8 24
specification; otherwise all remaining material in the heat or lot
⁄32 (0.156) 4 22
shall be rejected; or at the option of the producer, each tube ⁄8 (0.125) 3.2 21
⁄32 (0.094) 2.4 20
may be individually tested for acceptance and those pieces that
⁄16 (0.062) 1.6 18
do not meet the requirements of the specification shall be
A
Calculated elongation requirements shall be rounded to the nearest whole
rejected.
number.
9. Tensile and Hardness Requirements
having a lengt
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