ASTM B730-08(2018)

Standard Specification for Welded Nickel (UNS N02200/UNS N02201) and Nickel Copper Alloy (UNS N04400) Tube

SCOPE
1.1 This specification covers nickel (UNS N02200), low-carbon nickel (UNS N02201), and nickel copper alloy (UNS N04400) in the form of welded and annealed or welded and stress-relieved tube intended for general corrosive service and for mechanical applications.  
1.2 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.  
1.3 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.  
1.4 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: 31-Oct-2018
• ICS: 77.120.40 - Nickel, chromium and their alloys
• Technical Committee: B02 - Nonferrous Metals and Alloys
• Drafting Committee: B02.07 - Refined Nickel and Cobalt and Their Alloys

Relations

• Replaces: ASTM B730-08(2013) - Standard Specification for Welded Nickel (UNS N02200/UNS N02201) and Nickel Copper Alloy (UNS N04400) Tube
• Effective Date: 01-Nov-2018
• Refers: ASTM B751-19 - Standard Specification for General Requirements for Nickel and Nickel Alloy Welded Tube
• Effective Date: 01-Apr-2019
• Refers: ASTM B751-08(2018) - Standard Specification for General Requirements for Nickel and Nickel Alloy Welded Tube
• Effective Date: 01-Nov-2018
• Refers: ASTM B751-08(2013) - Standard Specification for General Requirements for Nickel and Nickel Alloy Welded Tube
• Effective Date: 01-Feb-2013
• Refers: ASTM B751-08 - Standard Specification for General Requirements for Nickel and Nickel Alloy Welded Tube
• Effective Date: 01-Nov-2008
• Refers: ASTM B751-03 - Standard Specification for General Requirements for Nickel and Nickel Alloy Welded Tube
• Effective Date: 10-Jun-2003
• Refers: ASTM B751-02 - Standard Specification for General Requirements for Nickel and Nickel Alloy Welded Tube
• Effective Date: 10-Oct-2002
• Refers: ASTM B751-01 - Standard Specification for General Requirements for Nickel and Nickel Alloy Welded Tube
• Effective Date: 10-Nov-2001
• Refers: ASTM B751-99 - Standard Specification for General Requirements for Nickel and Nickel Alloy Welded Tube
• Effective Date: 10-Nov-2001
• Referred By: ASTM B751-21 - Standard Specification for General Requirements for Nickel and Nickel Alloy Welded Tube
• Effective Date: 01-Nov-2018

Overview

ASTM B730-08(2018): Standard Specification for Welded Nickel (UNS N02200/UNS N02201) and Nickel Copper Alloy (UNS N04400) Tube sets requirements for welded and annealed, or welded and stress-relieved, tubes manufactured from nickel and nickel-copper alloys. This specification is designed for materials intended for general corrosive service and various mechanical applications where corrosion resistance and mechanical integrity are critical. Developed by ASTM International, this standard aligns with internationally recognized guidelines, ensuring global agreement on product quality and performance.

Key Topics

• Materials Covered

  • Nickel (UNS N02200)
  • Low-Carbon Nickel (UNS N02201)
  • Nickel Copper Alloy (UNS N04400)

• Product Forms and Conditions

  • Welded and annealed tubes
  • Welded and stress-relieved tubes
  • Tubes produced via automatic welding without addition of filler metal

• Dimensional Requirements

  • Outside diameter, wall thickness, and length (specific or random)
  • Minimum and nominal values as agreed upon by purchaser and manufacturer

• Mechanical Properties

  • Standards for tensile strength, yield strength, and elongation
  • Flattening and flange testing to ensure mechanical performance

• Chemical Composition

  • Minimum and maximum composition percentages for key elements such as nickel, copper, iron, manganese, carbon, silicon, and sulfur

• Testing and Certification

  • Nondestructive testing options: hydrostatic, eddy-current, ultrasonic, and pneumatic tests
  • Purchaser's right to specify required tests and to witness inspections
  • Certification and check analysis requirements

• Supplementary Requirements

  • Special provisions such as furnishing tubes without certain heat treatments or cold working, and use of matching filler metal for thicker tubing

Applications

The ASTM B730 standard is widely utilized in industries where corrosion resistance, mechanical durability, and alloy consistency are vital. Typical applications include:

• Chemical Processing Plants: Tubes for transporting corrosive fluids and gases.
• Petrochemical Industries: Components subjected to harsh processing environments.
• Marine Engineering: Tubing systems exposed to seawater and marine atmospheres.
• Power Generation: Condensers and heat exchangers where material integrity is crucial.
• General Mechanical Applications: Structural tubing and parts where strength and resistance to environmental factors are needed.

Manufacturers, fabricators, and end-users benefit from standardized requirements, ensuring compatibility and performance in demanding conditions.

Related Standards

Conformance to ASTM B730 is often supported or referenced alongside additional ASTM standards to ensure comprehensive product quality:

• ASTM B751: General requirements for nickel and nickel alloy welded tubes.
• Other Relevant Nickel Alloy Standards: For additional product forms and specific application needs.
• International Standards: Developed according to WTO TBT Committee guidelines for global acceptance.

Practical Value

Compliance with ASTM B730-08(2018) ensures:

• Product Consistency: Uniform mechanical and chemical properties across suppliers.
• Corrosion Resistance: Reliable performance in aggressive environments.
• Quality Assurance: Defined testing and inspection regimes, with certification as required.
• International Acceptance: Alignment with global standardization principles enables worldwide usage and regulatory approvals.

By specifying ASTM B730 for welded nickel and nickel-copper alloy tubes, businesses and engineers can confidently ensure the integrity and longevity of their piping and tubing systems in critical applications.

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:B730 −08 (Reapproved 2018)
Standard Specification for
Welded Nickel (UNS N02200/UNS N02201) and Nickel
Copper Alloy (UNS N04400) Tube
This standard is issued under the fixed designation B730; 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 3.1.1 Alloy name or UNS number.
3.1.2 ASTM designation and year of issue.
1.1 This specification covers nickel (UNS N02200), low-
3.1.3 Condition (Temper) (Table 1).
carbon nickel (UNS N02201), and nickel copper alloy (UNS
3.1.4 Dimensions:
N04400) in the form of welded and annealed or welded and
3.1.4.1 Outside diameter and nominal wall thickness.
stress-relieved tube intended for general corrosive service and
for mechanical applications.
NOTE 1—Tube produced to outside diameter and minimum wall
thicknessmaybefurnisheduponagreementbetweenthemanufacturerand
1.2 The values stated in inch-pound units are to be regarded
the purchaser.
as standard. The values given in parentheses are mathematical
3.1.4.2 Length (specific or random).
conversions to SI units that are provided for information only
3.1.5 Quantity (feet or metres, or number of pieces).
and are not considered standard.
3.1.6 Certification—State if certification is required.
1.3 This standard does not purport to address all of the
3.1.7 Samples for Product (Check) Analysis—State whether
safety concerns, if any, associated with its use. It is the
samples for product (check) analysis should be furnished.
responsibility of the user of this standard to become familiar
3.1.8 Purchaser Inspection—If the purchaser wishes to
with all hazards including those identified in the appropriate
witness tests or inspection of material at the place of
Safety Data Sheet (SDS) for this product/material as provided
manufacture, the purchase order must so state indicating which
by the manufacturer, to establish appropriate safety, health,
tests or inspections are to be witnessed.
and environmental practices, and determine the applicability
3.1.9 Nondestructive Tests—Specify either Test Category 1
of regulatory limitations prior to use.
or 2. If Test Category 1 is required, specify if either a
1.4 This international standard was developed in accor-
hydrostatic, eddy-current or ultrasonic test is to apply. If Test
dance with internationally recognized principles on standard-
Category 2 is required, specify which two tests are required.
ization established in the Decision on Principles for the
3.1.10 Supplementary Requirements.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
4. Materials and Manufacture
Barriers to Trade (TBT) Committee.
4.1 Tubes shall be made from flat-rolled material by an
automatic welding process with no addition of filler metal.
2. Referenced Documents
Subsequent to welding, and prior to heat treatment, the tubes
2.1 ASTM Standards:
shall be cold worked to assure that optimum corrosion resis-
B751 Specification for General Requirements for Nickel and
tance in the weld area and base metal will be developed during
Nickel Alloy Welded Tube
heat treatment.
3. Ordering Information
4.2 Tubes shall be furnished with a scale-free finish. When
bright annealing is used, descaling is not necessary.
3.1 Orders for material under this specification shall include
the following information:
5. Chemical Requirements
5.1 The material shall conform to the requirements as to
This specification is under the jurisdiction of ASTM Committee B02 on
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee chemical composition prescribed in Table 2.
B02.07 on Refined Nickel and Cobalt and Their Alloys.
Current edition approved Nov. 1, 2018. Published November 2018. Originally 6. Mechanical and Other Requirements
approved in 1984. Last previous ed
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