ASTM B151 Specification

This specification establishes the requirements for copper-nickel-zinc and copper-nickel rod and bar for general application produced from Copper Alloy UNS Nos. C70600, C70620, C71500, C71520, C74500, C75200, C75700, C76400, C77000, and C79200. Copper Alloys UNS Nos. C70620 and C71520 are for product intended for welding applications. The values stated in either inch-pound or SI units are to be regarded separately as standard. 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 nonconformance with the standard.

Chemical Composition

Composition, % max (unless shown as range or min)
Copper Alloy UNS No. Copper, Incl Silver Nickel, Incl Cobalt Lead Iron Manganese Zinc Phosphorous Sulfur Carbon
C70600 remainder 9.0-i1.0 0.05 1.0-1.8 1.0 1.0 0.02 0.02 ...
C70620 86.5 min 9.0-11.0 0.02 1.0-1.8 1.0 0.50 0.02 0.02 0.05
C71500 remainder 29.0-33.0 0.05 0.40-1.0 1.0 1.0 ... ... ...
C71520 65.0 min 29.0-33.0 0.02 0.40-1.0 1.0 0.50 0.02 0.02 0.05
C74500 63.5-66.5 9.0-11.0 0.05 0.25 0.50 remainder ... ... ...
C75200 63.0-66.5 16.5-19.5 0.05 0.25 0.50 remainder ... ... ...
C75700 63.5-66.5 11.0-13.0 0.05 0.25 0.50 remainder ... ... ...
C76400 58.5-61.5 16.5-19.5 0.05 0.25 0.50 remainder ... ... ...
C77000 53.5-56.5 16.5-19.5 0.05 0.25 0.50 remainder ... ... ...
C79200 59.0-66.5 11.0-13.0 0.8-1.4 0.25 0.50 remainder ... ... ...

Grain Size Requirements for OS (Annealed) Temper Rod and Bar

Copper Alloy UNS No.   Grain Size, mm
Temper Designation Nominal Minimum Maximum
All alloys OS015 0.015 . . . 0.030
All alloys OS035 0.035 0.025 0.050
C74500, C75200, C75700, C76400, and C77000 OS070 0.070 0.050 0.100

Mechanical Properties for Copper-Nickel-Zinc Alloy Rod and Bar

Temper Designation Diameter or Distance Between Parallel Surfaces, in. [mm] Tensile Strength, ksi [MPa]A
Copper Alloy UNS Nos. C75200 and C79200 Copper Alloy UNS Nos. C74500, C75700, C76400, and C77000
Min Max Min Max
  Rod: round        
H01 0.02 to 0.50 [0.5 to 10], incl 60 [415] 80 [550] 75 [515] 95 [655]
  Rod: round, hexagonal, octagonal        
H04 0.02 to 0.25 [0.5 to 6.5], incl 80 [550] 100 [690] 90 [620] 110 [760]
  Over 0.25 to 0.50 [6.5 to 10], incl 70 [485] 90 [620] 80 [550] 100 [690]
  Over 0.50 to 1.0 [10 to 25], incl 65 [450] 85 [590] 75 [515] 95 [655]
  Over 1.0 [25] 60 [415] 80 [550] 70 [485] 90 [620]
H04 Bar:        
  square, rectangular all sizes 68 [470] 88 [605] 75 [515] 95 [650]

Mechanical Properties for Copper-Nickel Alloy Rod and Bar [Inch-Pound Units]

Temper Designation Diameter or Distance Between Parallel Surfaces, in. Tensile Strength, min, ksi Yield Strength at 0.5 % Extension Under Load, min, ksi Elongation in 4x Diameter or Thickness of Specimen, min, % A
Copper Alloy UNS Nos. C70600 and C70620
O60, M30 round, hexagonal, and octagonal rods and square bars all sizes 38 15 30
H04 round, hexagonal, and octagonal rods and square bars up to 3⁄8, incl 60 38 10
    over 3⁄8 to 1, incl 50 30 15
    over 1 to 3, incl 40 15 30
    over 3 to 5, incl 38 15 20
O60 rectangular bars and shapes all sizes 38 15 30
For Thicknesses
H04 rectangular bars up to 3⁄8, incl 55 30 10
    over 3⁄8 to 1⁄2, incl 50 28 12
    over 1⁄2 to 3 40 17 20
H04 shapes all sizes (As agreed upon between the manufacturer or supplier and the purchaser)
Copper Alloy UNS Nos. C71500 and C71520
060, M30 round, hexagonal,and octagonalrods and square bars up to 1/2. incl 52 18 30
over 1/2 to 1, incl 48 18 30
over 1 45 18 30
H01 round, hexagonal,and octagonal rods and square bars up to V2. incl 65 50 10
over '12 to 1, incl 60 45 15
over 1 to 3, incl 55 35 20
over 3to 5,incl 45 18 20
H04 up to V2. incl 80 60 8
over 1/2 to 1, incl 75 58 10
over 1 to 2,incl 70 55 10
060 rectangular bars and shapes all sizes 45 15 30
For Thicknesses
H04 rectangular bars up to 1/2. incl 75 55 7
H04 shapes over 1/2 to 1, incl all sizes 70 50
(As agreed upon between the manufacturer
10
or supplier and the purchaser)
Note:

A. In any case, a minimum gage length of 1 in. shall be used.

Mechanical Properties for Copper-Nickel Alloy Rod and Bar [SI Units]

Temper Designation Diameter or Distance Between Parallel Surfaces, mm Tensile Strength, min, MPa Yield Strength at 0.5 % Extension Under Load, min, MPa Elongation in 4x Diameter or Thickness of Specimen, min, % A
Copper Alloy UNS Nos. C70600 and C70620
060, M30 round, hexagonal,and octagonal rods and square bars all sizes 260 105 30
H04 round, hexagonal,and octagonal rods and square bars up to 9.5, incl 415 260 10
over 9.5 to 25, incl 345 205 15
over 25 to 80, incl 275 105 30
over 80 to 125, incl 260 105 20
060 rectangular bars and shapes all sizes 260 105 30
For Thicknesses
H04 rectangular bars up to 9.5, incl 380 205 10
over 9.5 to 12, incl 345 195 12
over 12 to 80, incl 275 115 20
H04 shapes all sizes (As agreed upon between the manufacturer or supplier and the purchaser)
Copper Alloy UNS Nos. C71500 and C71520
060, M30 round, hexagonal,and octagonal rods and square bars up to 12, incl 360 125 30
over 12 to 25, incl 330 125 30
over 25 310 125 30
H01 round, hexagonal,and octagonal rods and square bars up to 12, incl 450 345 10
over 12 to 25, incl 415 310 15
over 25 to 80, incl 380 240 20
over 80 to 125, incl 310 125 20
H04 up to 12, incl 550 415 8
over 12 to 25, incl 515 400 10
over 25 to 50, incl 485 380 10
060 rectangular bars and shapes all sizes 310 105 30
For Thicknesses
H04 rectangular bars up to 12, incl 515 380 7
over 12 to 25, incl 485 345 10
H04 shapes all sizes (As agreed upon between the manufacturer or supplier and the purchaser)
Note:

A. In any case, a minimum gage length of 25 mm shall be used.