ASTM B121/B121M-16 - 1.4.2016
 
1. Scope

1.1 This specification establishes the requirements for leaded brass plate, sheet, strip, and rolled bar. The following alloys are covered:

 

 

Nominal Composition, %

Copper Alloy

Previously Used

 

UNS No.2

Designation

Copper

Zinc

Lead

Iron

 

 

 

 

 

 

C33500

2

63.5

36.0

0.5

...

C34000

3

63.5

35.5

1.0

...

C34200

5

63.5

34.5

2.0

...

C35000

...

61.5

37.4

1.1

...

C35300

4

61.5

36.7

1.8

...

C35600

6

61.5

36.0

2.5

...

1.2 Units—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 may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

 
2. Referenced Documents

B846-24

Standard Terminology for Copper and Copper Alloys

E8/E8M-25

Standard Test Methods for Tension Testing of Metallic Materials

E112-25

Standard Test Methods for Determining Average Grain Size

E255-23

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

E527-23

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

B601-24

Standard Classification for Temper Designations for Copper and Copper Alloys—Wrought and Cast

B248M-22

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

B248-22

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

E478-24

Standard Test Methods for Chemical Analysis of Copper Alloys