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C72900 Rod
ToughMet 3
CA 729 | CDA 729 | Cu-15Ni-8Sn | Copper Alloy UNS C72900 | Toughmet Spinodal Bronze | C729 | 729 | CDA729 | CA729 | 72900

Copper Zinc Tin Iron Lead Magnesium Manganese Nickel Niobium 
Balance 0.5% Max. 7.5-8.5% 0.5% Max. 0.02% Max. 0.15% Max. 0.3% Max. 14.5-15.5% 0.1% Max. 


Copper alloy 729 is an excellent alternative to nickel alloys, aluminum bronzes, and beryllium copper. C729 ToughMet alloys are anti-galling, free of lead and beryllium, and show excellent corrosion and stress corrosion cracking resistance in seawater applications.

  • Exceptional resistance to corrosion and cavitation
  • Outstanding lubricity and durability in demanding applications
  • Highly uniform composition in all product forms
Meets ASTM-B251 Specifications (The following are also available upon request:)
  • ASTM-B251
Forms Available

RodDiam. 1.000" to 4.000"Request a Quote!  
TubeDiam. 1.625" to 8.000"Request a Quote!  

Physical Properties
Density0.325Lbs. per cubic inch @ 68°F (annealed)
Modulus21Elastic modulus in tension x 106 P.S.I.
Electrical Conductivity9% IACS at 68°F (annealed)
Thermal Conductivity22BTU per foot per hour per °F at 68°F (annealed)
Thermal Expansion9.1Inches per inch x 10-6 from 68°F to 572°F

Mechanical Properties
Tensile StrengthYield OffsetElongationHardness
x 1000 P.S.I.0.2% offset x 1000 P.S.I.% in 2 Inches
T3 AT90
1.000" - <4.000" Diam.
1109015HBS 260
T3 AT90
4.000" - 8.000" Diam.
1109012HBS 260
T3 AT110
1.000" - <4.000" Diam.
12511010C 30
T3 AT110
4.000" - 8.000" Diam.
1251106C 30

Hardness Legend  C: Rockwell (150 kgf Diamond Cone)  HBS : Brinell (Hardened Steel Ball)  

NOTE: The information contained herein are intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. It is given without obligation or liability. Contact us for manufacturers' complete material property datasheets.

Customer Service Agent  Have a question on C72900? Need help selecting the right metal for your specific requirement? Call us today
at (800) 326-3376.