ASTM A200-94
(Specification)Specification for Seamless Intermediate Alloy-Steel Still Tubes for Refinery Service (Withdrawn 1999)
Specification for Seamless Intermediate Alloy-Steel Still Tubes for Refinery Service (Withdrawn 1999)
General Information
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
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Designation: A 200 – 94 An American National Standard
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
Seamless Intermediate Alloy-Steel Still Tubes for Refinery
1
Service
This standard is issued under the fixed designation A 200; 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.
1. Scope 4. General Requirements
1.1 This specification covers several grades of minimum- 4.1 Material furnished under this specification shall con-
wall-thickness, chromium-molybdenum and chromium- form to the applicable requirements of the current edition of
molybdenum-silicon, seamless, hot-finished and cold-finished, Specification A 450/A 450M, unless otherwise provided
intermediate alloy-steel still tubes, for use in carrying fluids at herein.
elevated temperatures and pressures in various types of heaters,
5. Manufacture
in which the tubes may be subjected to a furnace temperature
5.1 Tubes shall be made by the seamless process and shall
higher than that of the contained fluid.
be either hot-finished or cold-finished, as specified.
1.2 This specification covers tubes 2 to 9 in., (50.8 to 228.6
mm) inclusive, in outside diameter and over 0.220 in. (5.59
6. Heat Treatment
mm) in minimum wall thickness.
6.1 Hot-rolled tubes, except Grade T91, shall be heat treated
1.3 The values stated in inch-pound units are to be regarded
by slow cooling from above 1550°F (845°C), isothermal
as the standard. The values given in parentheses are for
annealing from above 1600°F (870°C), or cooling in air or in
information only.
the cooling chamber of a controlled atmosphere furnace from
1650°F (900°C) or higher and reheating to 1200°F (650°C) or
2. Referenced Documents
higher. Cold-finished tubes shall be heat treated after the final
2.1 ASTM Standards:
cold-finishing pass at a temperature of 1200°F or higher.
A 450/A450M Specification for General Requirements for
2
NOTE 1—Isothermal annealing, as applied to tubular products, may
Carbon, Ferritic Alloy, and Austenitic Alloy Steel Tubes
involve austenitizing a ferrous alloy and then cooling to and holding
within the range of temperature at which austenite transforms to a
3. Ordering Information
relatively soft ferrite-carbide aggregate.
3.1 Orders for material under this specification should
6.2 Grade T91 tubes shall be normalized at 1900°F
include the following, as required, to describe the desired
(1040°C) to 2000°F (1090°C) and tempered at 1350°F (730°C)
material adequately:
minimum.
3.1.1 Quantity (feet, metres, or number of lengths),
3.1.2 Name of material (seamless tubes), 7. Surface Condition
3.1.3 Grade (Table 1),
7.1 Tubes shall be free of scale and suitable for inspection.
3.1.4 Manufacture (hot-finished or cold-finished),
8. Chemical Composition
3.1.5 Size (outside diameter and minimum wall thickness),
8.1 The steel shall conform to the requirements as to
3.1.6 Length (specific or random),
chemical composition prescribed in Table 1.
3.1.7 Special marking (see 15.2) ,
3.1.8 Optional requirement (flattening or flaring test, Sec-
9. Product Analysis
tion 13),
9.1 An analysis of either one billet or one tube shall be made
3.1.9 Test report required (see Certification Section of
from each heat. The chemical composition thus determined
Specification A 450/A 450M),
shall conform to the requirements specified.
3.1.10 Specification designation, and
9.2 If the original test for product analysis fails, retests of
3.1.11 Special requirements.
two additional billets or tubes shall be made. Both retests, for
the elements in question shall meet the requirement of the
1
specification; otherwise all remaining materials in the heat or
This specification is under the jurisdiction of ASTM Committee A-1 on Steel,
Stainless Steel and Related Alloysand is the direct responsibility of Subcommittee
lot (Note 2) shall be rejected or, at the option of the producer,
A01.10 on Tubing.
each billet or tube may be individually tested for acceptance.
Current edition approved June 15, 1994. Published August 1994. Originally
Billets or tubes that do not meet the requirements of the
published as A 200 – 37 T. Last previous edition A 200 – 91.
2
Annual Book of ASTM Standards, Vol 01.01. specification shall be rejected.
1
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A 200
TABLE 1 Chemical Requirements
Grade Composition, %
Carbon Manganese Phosphorus, Sulfur, max Silicon Chromium Molybdenum Others
max
T4 0.05–0.15 max 0.30–0.60 0.025 0.025 0.50–1.00 2.15–2.85 0.44–0.65 .
T5 0.15 max 0.30–0.60 0
...
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