ASTM B462-00a
(Specification)Specification for Forged or Rolled UNS N06030, UNS N06022, UNS N06200, UNS N08020, UNS N08024, UNS N08026, UNS N08367, UNS N10276, UNS N10665, UNS N10675 & UNS R20033 Alloy Pipe Flanges, Forged Fittings & Valves & Parts for Corrosive
Specification for Forged or Rolled UNS N06030, UNS N06022, UNS N06200, UNS N08020, UNS N08024, UNS N08026, UNS N08367, UNS N10276, UNS N10665, UNS N10675 & UNS R20033 Alloy Pipe Flanges, Forged Fittings & Valves & Parts for Corrosive
SCOPE
1.1 This specification covers forged or rolled UNS N06030, UNS N06022, UNS N06200, UNS N08020, UNS N08024, UNS N08026, UNS N08367, UNS N10276, UNS N10665, UNS N10675 and UNS R20033* pipe flanges, forged fittings, and valves and parts intended for corrosive high-temperature service.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
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Designation: B 462 – 00a
Standard Specification for
Forged or Rolled UNS N06030, UNS N06022, UNS N06200,
UNS N08020, UNS N08024, UNS N08026, UNS N08367, UNS
N10276, UNS N10665, UNS N10675 and UNS R20033 Alloy
Pipe Flanges, Forged Fittings, and Valves and Parts for
Corrosive High-Temperature Service
This standard is issued under the fixed designation B 462; 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 2.2 ANSI Standard:
B16.5 Steel Pipe Flanges and Flanged Fittings (for appli-
1.1 This specification covers forged or rolled UNS
cable alloy UNS N08020)
N06030, UNS N06022, UNS N06200, UNS N08020, UNS
2.3 Manufacturers’ Standardization Society of the Valve
N08024, UNS N08026, UNS N08367, UNS N10276, UNS
and Fittings Industry Standard:
N10665, UNS N10675 and UNS R20033* pipe flanges, forged
SP-25 Standard Marking System for Valves, Fittings,
fittings, and valves and parts intended for corrosive high-
Flanges, and Unions
temperature service.
1.2 The values stated in inch-pound units are to be regarded
3. Terminology
as the standard. The values given in parentheses are for
3.1 Definitions of Terms Specific to This Standard:
information only.
3.1.1 forgings, n—the term forgings as used in this specifi-
2. Referenced Documents cation shall be understood to cover one or all of the products
mentioned in 1.1, either forged or rolled.
2.1 ASTM Standards:
A 262 Practices for Detecting Susceptibility to Intergranu-
4. Ordering Information
lar Attack in Austenitic Stainless Steels
4.1 It is the responsibility of the purchaser to specify all
B 472 Specification for UNS N06030, UNS N06022, UNS
requirements that are necessary for the safe and satisfactory
N06200, UNS N08020, UNS N08026, UNS N08024, UNS
performance of material ordered under this specification.
N08926, UNS N08367, UNS N10276, UNS N10665, UNS
Examples of such requirements include, but are not limited to,
N10675, and UNS R20033 Nickel Alloy Billets and Bars
the following:
for Reforging
5 4.1.1 Quantity (weight or number of pieces),
E 8 Test Methods for Tension Testing of Metallic Materials
4.1.2 Name of material or UNS number,
B 880 Specification for General Requirements for Chemical
4.1.3 Forging sketch when required (5.2.4),
Check Analysis Limits for Nickel, Nickel Alloys and
4 4.1.4 Forging sectioning, if required (5.2.3),
Cobalt Alloys
4.1.5 ASTM designation and year of issue,
E 1473 Test Methods for Chemical Analysis of Nickel,
6 4.1.6 Inspection (14.1),
Cobalt, and High-Temperature Alloys
4.1.7 Supplementary requirements, if any, and
E 1916 Guide for the Identification and/or Segregation of
6 4.1.8 If possible, the intended end use.
Mixed Lots of Metals
NOTE 1—A typical ordering description is as follows: 200 forgings,
UNS N08020, in accordance with the attached drawing and Specification
This specification is under the jurisdiction of ASTM Committee B02 on
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee B 462.
B02.07 on Refined Nickel and Cobalt and Their Alloys.
Current edition approved Oct. 10, 2000. Published November 2000. Originally
5. Materials and Manufacture
published as B 462 – 67. Last previous edition B 462 – 97.
2 5.1 Discard—A sufficient discard shall be made from each
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
cation SB-462 in Section II of that Code. ingot to secure freedom from injurious piping and undue
* New designation established in accordance with Practice E 527 and SAE
J1086, Practice for Numbering Metals and Alloys (UNS).
3 7
Annual Book of ASTM Standards, Vol 01.03. Available from American National Standards Institute, 11 W. 42nd St., 13th
Annual Book of ASTM Standards, Vol 02.04. Floor, New York, NY 10036.
5 8
Annual Book of ASTM Standards, Vol 03.01. Available from the Manufacturers Standardization Society of the Valve and
Annual Book of ASTM Standards, Vol 03.06. Fittings Industry, 127 Park St., N.E. Vienna, VA 22180.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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.
B 462
segregation. The material shall have a homogeneous structure product of UNS N08026 and UNS R20033 alloys shall be
as shown by the macroetch test in 7.3. furnished in the solution annealed condition.
5.2 Manufacturing Practice:
NOTE 2—The recommended annealing temperatures all followed by
5.2.1 Material for forgings shall consist of billets or bars in
water quenching or rapidly cooling by other means are: UNS N06030—
accordance with Specification B 472.
2125°F–2175°F (1163°C–1191°C), UNS N06022—2025°F–2075°F
5.2.2 The material shall be forged by hammering, pressing,
(1107°C–1135°C), UNS N06200—2075°F–2125°F (1135°C–1163°C),
UNS N08020—1700 to 1850°F (927 to 1010°C), UNS N08024—1925 to
rolling, extruding, or upsetting; it shall be brought as nearly as
1975°F (1052 to 1079°C), UNS N08026—2050 to 2200°F (1121 to
practicable to the finished shape and size by hot working; and
1204°C), UNS N10276—2025°F–2075°F (1107°C–1135°C), UNS
shall be so processed as to cause metal flow during the
N10665—1925°F–2000°F (1052°C–1093°C), UNS N10675—
hot-working operation in the direction most favorable for
1925°F–2000°F (1052°C–1093°C), and UNS R20033—2010 to 2150°F
resisting the stresses encountered in service.
(1100–1180°C).
5.2.3 When specified in the order, a sample forging may be
5.3.2 Alloy N08367 shall be furnished in the solution
sectioned and etched to show flow lines and the condition as
annealed condition.
regards internal imperfections. In such cases, the question of
5.3.2.1 The recommended heat treatment shall consist of
acceptable and unacceptable character of metal flow shall be a
heating to a minimum temperature of 2025°F (1105°C) and
subject for agreement between the manufacturer and the
quenching in water, or rapidly cooling, by other means.
purchaser.
5.3.3 Heat treatment may be performed before machining.
5.2.4 When specified in the order, the manufacturer shall
submit for approval of the purchaser a sketch showing the
6. Chemical Composition
shape of the rough forging before machining.
5.3 Heat Treatment: 6.1 The material shall conform to the requirements as to
5.3.1 The product of UNS N08020 alloy shall be furnished chemical composition prescribed in Table 1.
in the stabilized-annealed condition. The product of UNS 6.2 If a product (check) analysis is performed by the
N08024 shall be furnished in the annealed condition. The purchaser, the material shall conform to the requirements
TABLE 1 Chemical Requirements
Composition, %
Element
UNS N08026 UNS N08020 UNS N08024 UNS N08367 UNS R20033
Carbon, max 0.03 0.07 0.03 0.030 0.015
Manganese, max 1.00 2.00 1.00 2.00 2.0
Phosphorus, max 0.03 0.045 0.035 0.040 0.02
Sulfur, max 0.03 0.035 0.035 0.030 0.01
Silicon, max 0.50 1.00 0.50 1.00 0.50
Nickel 33.00–37.20 32.00–38.00 35.00–40.00 23.50 to 25.50 30.0–33.0
Chromium 22.00–26.00 19.00–21.00 22.50–25.00 20.00 to 22.00 31.0–35.0
Molybdenum 5.00–6.70 2.00–3.00 3.50–5.00 6.00 to 7.00 0.50–2.0
Copper 2.00–4.00 3.00–4.00 0.50–1.50 0.75 max 0.30–1.20
Columbium (Nb) + tantalum . 8 3 carbon–1.00 0.15–0.35 . .
Nitrogen 0.10–0.16 . . 0.18 to 0.25 0.35–0.60
A A A
Iron remainder remainder remainder remainder balance
Element Composition, %
UNS N06030 UNS N06022 UNS N06200 UNS N10276 UNS N10665 UNS N10675
Carbon, max 0.03 0.015 0.010 0.010 0.02 0.01
Manganese, max 1.5 0.50 0.50 1.0 1.0 3.0
Phosphorous, max 0.04 0.02 0.025 0.04 0.04 0.030
Sulfur, max 0.02 0.02 0.010 0.03 0.03 0.010
Silicon, max 0.8 0.08 0.08 0.08 0.10 0.10
Nickel Remainder Remainder Remainder Remainder Remainder Remainder
Chromium 28.0-31.5 20.0-22.5 22.0-24.0 14.5-16.5 1.0 max 1.0-3.0
Molybdenum 4.0-6.0 12.5-14.5 15.0-17.0 15.0-17.0 26.0-30.0 27.0-32.0
Copper 1.0-2.4 1.3-1.9 0.20
Columbium (Nb) 0.30-1.50
+ tantalum
Nitrogen . . .
Iron 13.0-17.0 2.0-6.0 3.0 max 4.0-7.0 2.0 max 1.0-3.0
Cobalt, max 5.0 2.5 2.0 2.5 1.0 3.0
Tungsten 1.5-4.0 2.5-3.5 3.0-4.5 3.0 max
Vanadium, max 0.35 0.35 0.20
Titanium, max 0.2
Zirconium, max 0.10
Columbium (Nb) 0.20 max
Tantalum 0.20 max
Nickel + 94.0-98.0
Molybdenum
Aluminum, max 0.50 0.50
A
Iron shall be determined arithmetically by difference.
NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the
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