ASTM B122/B122M-20 - 1.10.2020
 
1. Scope

1.1 This specification establishes the requirements for copper-nickel-tin alloy, copper-nickel-zinc alloy (nickel silver), and copper-nickel alloy plate, sheet, strip, and rolled bar. The following alloys are covered:

 

 

Nominal Composition, %

Copper Alloy

Previously Used

 

 

 

 

Chro-

UNS No.2

Designation

Copper

Nickel

Zinc

Tin

mium

 

C70600

...

90

10

...

...

...

C70620

...

90

10

...

...

...

C71000

6

80

20

...

...

...

C71500

5

70

30

...

...

...

C71520

...

70

30

...

...

...

C72200

...

85

15

...

...

0.5

C72500

...

89

 9

...

2

...

C73500

1

72

18

10

...

...

C74000

9

70

10

20

...

...

C74500

3

65

10

25

...

...

C75200

2

65

18

17

...

...

C76200

8

59

12

29

...

...

C77000

4

55

18

27

...

...

Note 1: Plates of copper-nickel alloy Copper Alloy UNS Nos. C70600, C70620, C71500, C71520, and C72200 for use as tube plates in surface condensers and heat exchangers are covered by Specification B171/B171M.

1.2 Units—The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, SI units are shown in brackets. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.

1.3 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.

 
2. Referenced Documents

B171/B171M

Specification for Copper-Alloy Plate and Sheet for Pressure Vessels, Condensers, and Heat Exchangers

B248

Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar

B248M

Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar (Metric)

E478

Test Methods for Chemical Analysis of Copper Alloys

B846

Terminology for Copper and Copper Alloys

B601

Classification for Temper Designations for Copper and Copper Alloys--Wrought and Cast

E112

Test Methods for Determining Average Grain Size

E527

Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)

E255

Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition

E8/E8M

Test Methods for Tension Testing of Metallic Materials