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ASTM B163 Seamless Nickel Alloy Condenser and Heat- Exchanger Tubes

Standard ASTM B163 Specification for Seamless Nickel and Nickel Alloy Condenser and Heat Exchanger Tubes

1. Scope

1.1 This specification2 covers seamless tubes of nickel and nickel alloys, as shown in Table 1, for use in condenser and heat-exchanger service.

1.2 This specification covers outside diameter and average wall, or outside diameter and minimum wall tube.

1.2.1 The sizes covered by this specification are 3 in. (76.2mm) and under in outside diameter with minimum wall thicknesses of 0.148 in. (3.76 mm) and under, and with average wall thicknesses of 0.165 in. (4.19 mm) and under.

1.3 Tube shall be furnished in the alloys and conditions as shown in Table 2. For small diameter and light wall tube (converter sizes),

1.4 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

1.5 The following safety hazards caveat pertains only to the test method portion, Section 12, of this specification

2. Referenced Documents

2.1 ASTM Standards:

B 829 Specification for General Requirements for Nickel and Nickel Alloys Seamless Pipe and Tube

B 880 Specification for General Requirements for Chemical Check Analysis Limits for Nickel, Nickel Alloys and Cobalt Alloys

E 8 Test Methods for Tension Testing of Metallic Materials E 18 Test Methods for Rockwell Hardness and Rockwell Superficial Hardness of Metallic Materials

E 29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

E 76 Test Methods for Chemical Analysis of Nickel-Copper Alloys4

E 112 Test Methods for Determining the Average Grain Size

E 140 Hardness Conversion Tables for Metals

E 1473 Test Methods for Chemical Analysis of Nickel,Cobalt, and High-Temperature Alloys

2.2 Federal Standards:

Fed. Std. No. 102 Preservation, Packaging and Packing Levels

Fed. Std. No. 123 Marking for Shipment (Civil Agencies)

Fed. Std. No. 182 Continuous Identification Marking of Nickel and Nickel-Base Alloys

2.3 Military Standard:

MIL-STD-129 Marking for Shipment and Storage

3. Terminology

3.1 Definitions:

3.1.1 average diameter, n—average of the maximum and minimum outside diameters, as determined at any one cross section of the tube.

3.1.2 tube, n—hollow product of round or any other cross section having a continuous periphery.

4. Ordering Information

4.1 It is the responsibility of the purchaser to specify all requirements that are necessary for the safe and satisfactory performance of material ordered under this specification. Examples of such requirements include, but are not limited to, the following:

4.1.1 Alloy (Table 1).

4.1.2 Condition (Temper) Table 3 and Appendixes X1 and X2. If annealed ends for stress relieved tubing are desired, state length of end to be annealed and whether or not one end or both ends are to be annealed.

4.1.3 Finish.

4.1.4 Dimensions—Outside diameter, minimum or average wall thickness (in inches, not gage number), and length.

4.1.5 Fabrication Operations: Cold Bending or Coiling. Packing. Rolling or Expanding into Tube Sheets. Welding or Brazing—Process to be employed. Hydrostatic Test or Nondestructive Electric Test Specify type of test (6.5). Pressure Requirements—If other than required by 6.5. Ends—Plain ends cut and deburred will be furnished.

4.1.6 Supplementary Requirements—State nature and details

4.1.6 Supplementary Requirements—State nature and details.

4.1.7 Certification—State if certification is required (Section 15).

4.1.8 Samples for Product (Check) Analysis—Whether samples for product (check) analysis shall be furnished.

4.1.9 Purchaser Inspection—If purchaser wishes to witness tests or inspection of material at place of manufacture, the purchase order must so state indicating which tests or inspections are to be witnessed

4.1.10 Small-Diameter and Light-Wall Tube (Converter Sizes)—See Appendix X2.

5. Chemical Composition

5.1 The material shall conform to the composition limits specified in Table 1.

5.2 If a product (check) analysis is performed by the purchaser, the material shall conform to the product (check) analysis per Specification B 880.

6. Mechanical Properties and Other Requirements

6.1 Mechanical Properties—The material shall conform to the mechanical properties specified in Table 3.

6.2 Hardness—When annealed ends are specified for tubing in the stress-relieved condition (see Table 3), the hardness of the ends after annealing shall not exceed the values specified in Table 3.

6.3 Flare—A flare test shall be made on one end of 1 % of the number of finished tube lengths from each lot. For less than 100 tubes in a lot, a flare test shall be made on one end of one tube length in the lot. In the case of stress relieved tubing with annealed ends, the test shall be made prior to, or subsequent to, annealing of the ends at the option of the manufacturer.

6.3.1 The flare test shall consist of flaring a test specimen with an expanding tool having an included angle of 60° until the specified outside diameter has been increased by 30 %. The flared specimen shall not exhibit cracking through the wall.

6.4 Grain Size—A transverse sample representing full-wall thickness of annealed alloys UNS N08120, UNS N08810 and UNS N08811 shall conform to an average grain size of ASTM No. 5 or coarser.

6.5 Hydrostatic or Nondestructive Electric Test—Each tube shall be subjected to either the hydrostatic test or the nondestructive electric test. The type of test to be used shall be at the option of the manufacturer, unless otherwise specified in the purchase order.

6.5.1 Hydrostatic Test: Each tube with an outside diameter 1⁄8 in. (3.2 mm) and larger and tubes with wall thickness of 0.015 in. (0.38 mm) and over shall be tested by the manufacturer to an internal hydrostatic pressure of 1000 psi (6.9 MPa) provided that the fiber stress calculated in accordance with the following equation does not exceed the allowable fiber stress, S, indicated below. The tube shall show no evidence of leakage.

7. Dimensions and Permissible Variations

7.1 Outside Diameter and Wall Thickness—The permissible variations in the outside diameter and wall thickness of tube shall not exceed those prescribed in Table 4 and Table X2.2, as applicable. (See also Table 5 and Table 6.)

7.2 Length—When tube is ordered cut-to-length, the length shall not be less than that specified, but a variation of plus 1⁄8 in. (3.2 mm) will be permitted, except that for lengths over 30 ft (9.1 m), a variation of plus 1⁄4 in. (6.4 mm) will be permitted.

7.3 Straightness—Material shall be reasonably straight and free of bends or kinks.

8. Workmanship, Finish, and Appearance

8.1 The material shall be uniform in quality and temper, smooth, commercially straight, and free of injurious imperfections.

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