ASTM B814-06(2020)

Standard Specification for Nickel-Chromium-Iron-Molybdenum-Tungsten Alloy<brk/>(UNS N06920) Plate, Sheet, and Strip

ABSTRACT
This specification covers the requirements for UNS N06920 nickel-chromium-iron-molybdenum-tungsten alloy in the form of rolled plates, sheets and strips for general corrosion service. The range of products covered here includes brightly finished hot or cold rolled, annealed and descaled unless solution-annealed sheets and strips and hot rolled, solution-annealed, and descaled plates.
SCOPE
1.1 This specification covers nickel-chromium-iron-molybdenum-tungsten alloy UNS N06920 in the form of rolled plate, sheet, and strip for general corrosion service.  
1.2 The following products are covered under this specification:  
1.2.1 Sheet and Strip—Hot or cold rolled, annealed and descaled unless solution-annealing is performed in an atmosphere yielding a bright finish; and  
1.2.2 Plate—Hot rolled, solution-annealed, and descaled.  
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.4 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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 30-Sep-2020
• ICS: 77.150.40 - Nickel and chromium products
• Technical Committee: B02 - Nonferrous Metals and Alloys
• Drafting Committee: B02.07 - Refined Nickel and Cobalt and Their Alloys

Relations

• Refers: ASTM B906-02(2017) - Standard Specification for General Requirements for Flat-Rolled Nickel and Nickel Alloys Plate, Sheet, and Strip
• Effective Date: 01-Nov-2017
• Refers: ASTM B906-02(2012) - Standard Specification for General Requirements for Flat-Rolled Nickel and Nickel Alloys Plate, Sheet, and Strip
• Effective Date: 01-May-2012
• Refers: ASTM B906-02(2006) - Standard Specification for General Requirements for Flat-Rolled Nickel and Nickel Alloys Plate, Sheet, and Strip
• Effective Date: 01-Dec-2006
• Refers: ASTM B906-02 - Standard Specification for General Requirements for Flat-Rolled Nickel and Nickel Alloys Plate, Sheet, and Strip
• Effective Date: 10-Oct-2002
• Refers: ASTM B906-00 - Standard Specification for General Requirements for Flat-Rolled Nickel and Nickel Alloys Plate, Sheet, and Strip
• Effective Date: 10-Jun-2000

Overview

ASTM B814-06(2020) is the standard specification established by ASTM International for Nickel-Chromium-Iron-Molybdenum-Tungsten Alloy (UNS N06920) plates, sheets, and strips. This specification outlines the requirements for delivering these materials in hot or cold rolled, solution-annealed, and descaled conditions, primarily for general corrosion service applications. The standard ensures material consistency, quality, and traceability for critical industries requiring robust performance in corrosive environments.

UNS N06920 alloys covered by ASTM B814-06(2020) are distinguished by their superior corrosion resistance properties, making them suitable for applications in demanding sectors such as chemical processing, power generation, marine, and petrochemical industries.

Key Topics

• Material Scope:

  • Covers rolled plate, sheet, and strip forms of UNS N06920 alloy.
  • Sheet and strip are delivered hot or cold rolled, annealed, and descaled, unless a bright finish is achieved through solution annealing.
  • Plate is provided as hot rolled, solution-annealed, and descaled.

• Dimensional and Mechanical Requirements:

  • Thickness, width, and length tolerances are governed by referenced standards (e.g., ASTM B906).
  • Mechanical properties specified include minimum tensile strength, yield strength, and elongation at room temperature.

• Chemical Composition:

  • Prescribes limits for key elements: Nickel, Chromium, Iron, Molybdenum, Tungsten, Cobalt, Manganese, Phosphorus, Sulfur, and Silicon.
  • Ensures the alloy offers consistent corrosion resistance and mechanical integrity.

• Product Marking and Certification:

  • Each product is clearly marked with the specification number, heat number, manufacturer’s identification, and size for traceability.
  • Certification reporting and inspection requirements are identified for compliance and quality assurance.

• Safety and Regulatory Compliance:

  • Users are responsible for adhering to safety, health, and environmental practices, referencing the appropriate Safety Data Sheet (SDS).
  • The standard is developed in alignment with international trade and standardization principles.

Applications

• General Corrosion Service: The alloy is designed for service in environments where resistance to a wide range of corrosive media is critical.
• Chemical Processing: Ideal for equipment and structural components exposed to aggressive chemicals.
• Petrochemical Industry: Applied in piping, heat exchangers, and storage tanks handling corrosive fluids and gases.
• Power Generation: Used in systems subject to high temperature and corrosive conditions.
• Marine Environments: Suitable for structures and machinery exposed to seawater, offering long-term durability and reduced maintenance.
• Fabrication: Sheet, strip, and plate forms support a range of manufacturing processes including cutting, welding, and forming.

Related Standards

• ASTM B906: General Requirements for Flat-Rolled Nickel and Nickel Alloys Plate, Sheet, and Strip
• ASTM Standards referenced: For chemical composition, mechanical testing, and dimensional tolerances.

Practical Value

Complying with ASTM B814-06(2020) guarantees that UNS N06920 plate, sheet, and strip materials will meet the rigors of general corrosion service. This is crucial for manufacturers, suppliers, and end users demanding reliable, high-performance nickel-based alloys that maintain structural integrity and resist degradation in hostile environments.

Keywords: ASTM B814, Nickel-Chromium-Iron-Molybdenum-Tungsten Alloy, UNS N06920, corrosion resistant alloys, sheet, plate, strip, flat-rolled nickel alloys, chemical processing materials, ASTM standards

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:B814 −06 (Reapproved 2020)
Standard Specification for
Nickel-Chromium-Iron-Molybdenum-Tungsten Alloy
(UNS N06920) Plate, Sheet, and Strip
This standard is issued under the fixed designation B814; 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 B906 Specification for General Requirements for Flat-
Rolled Nickel and Nickel Alloys Plate, Sheet, and Strip
1.1 This specification covers nickel-chromium-iron-
molybdenum-tungsten alloy UNS N06920 in the form of rolled
3. Terminology
plate, sheet, and strip for general corrosion service.
3.1 Definitions of Terms Specific to This Standard:
1.2 The following products are covered under this specifi-
3.1.1 plate, n—material ⁄16 in. (4.76 mm) and over in
cation:
thickness.
1.2.1 Sheet and Strip—Hot or cold rolled, annealed and
descaled unless solution-annealing is performed in an atmo-
3.1.2 sheet and strip, n—material under ⁄16 in. (4.76 mm) in
sphere yielding a bright finish; and
thickness.
1.2.2 Plate—Hot rolled, solution-annealed, and descaled.
4. General Requirements
1.3 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical
4.1 Materials furnished under this specification shall con-
conversions to SI units that are provided for information only
form to the applicable requirements of Specification B906
and are not considered standard.
unless otherwise provided herein.
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5. Ordering Information
responsibility of the user of this standard to become familiar
5.1 It is the responsibility of the purchaser to specify all
with all hazards including those identified in the appropriate
requirements that are necessary for the safe and satisfactory
Safety Data Sheet (SDS) for this product/material as provided
performance of material ordered to this specification. Ex-
by the manufacturer, to establish appropriate safety, health,
amples of such requirements include, but are not limited to, the
and environmental practices, and determine the applicability
following:
of regulatory limitations prior to use.
5.1.1 Alloy.
1.5 This international standard was developed in accor-
dance with internationally recognized principles on standard- 5.1.2 Dimensions—Thickness (in decimals of an inch),
ization established in the Decision on Principles for the width, and length (inch or fraction of an inch).
Development of International Standards, Guides and Recom-
5.1.3 Certification—State whether a report of test results is
mendations issued by the World Trade Organization Technical
required (Specification B906).
Barriers to Trade (TBT) Committee.
5.1.4 Optional Requirement—Plate; state how the plate is to
be cut (see 8.8.1 and Specification B906, Table A2.3).
2. Referenced Documents
5.1.5 Purchase Inspection—State which tests or inspections
2.1 ASTM Standards:
are to be witnessed (Specification B906).
5.1.6 Samples for Product (Check) Analysis—State whether
samples shall be furnished (Specification B906).
This specification is under the jurisdiction of ASTM Committee B02 on
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
6. Chemical Composition
B02.07 on Refined Nickel and Cobalt and Their Alloys.
Current edition approved Oct. 1, 2020. Published October 2020. Originally
6.1 The material shall conform to the chemical composition
approved in 1991. Last previous edition approved in 2016 as B814 – 06 (2016).
requirements prescribed in Table 1.
DOI: 10.1520/B0814-06R20.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.2 If a product (check) analysis is made by the purchaser,
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
the material shall conform to the product (check) analysis
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. variations in accordance with Specification B906.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B814−06 (2020)
TABLE 1 Chemical Requirements
8.3.2 Sheet and Strip—The permissible variations in width
Element Composition Limits, % for sheet and strip shall be as prescribed in Specification B906
Table A2.4.
Chromium 20.5–23.0
8.4 Length:
Iron 17.0–20.0
Molybdenum 8.0–10.0
8.4.1 Plate—Permissible variations in the length of rectan-
Tungsten 1.0–3.0
gular plate shall be as prescribed in Specification B906
Carbon, max 0.03
Table A2.3.
Cobalt, max 5.0
Manganese, max 1.0
8.4.2 Sheet and Strip—Sheet and strip may be ordered to cut
Phosphorus, max 0.040
lengths, in which case a variation of ⁄8 in. (3.175 mm) over the
Sulfur, max 0.030
specified length shall be permitted, with a 0 minus tolerance.
Silicon, max 1.0
Nickel Remainder
8.5 Straightness:
8.5.1 The edgewise curvature (depth o
...