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Cu–Ni–Sn alloys

C72900 Copper-Nickel-Tin Alloy

High-strength Cu-Ni-Sn alloy for load-bearing sliding and wear-sensitive components.

BushingsBearing sleevesOil & gasPrice on request
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C72900 Copper-Nickel-Tin Alloy

Catalogue material image.

Reference values: Brochure example: C72900 in TS-1250 condition, tensile strength ≥1,250 MPa and yield strength ≥1,100 MPa; both condition-specific.

Technical data

Chemical composition

CuBalance
Ni15 wt%
Sn8 wt%
Mn≤0.3 wt%
Zn≤0.5 wt%
Fe≤0.5 wt%

Physical properties

PropertySI
Density8.92 g/cm³
Electrical conductivity8 % IACS
Thermal conductivity38 W/(m·K)
Melting point950 °C
Linear thermal expansion16.1 µm/(m·K)
Elastic modulus140 GPa

Mechanical properties by condition

Applicable only to the listed diameter and condition. UTS: ultimate tensile strength; YS: yield strength.

ConditionDiameter (mm)UTS (MPa)YS (MPa)Elongation (%)Hardness
CTX-720Ø130–285≥720≥620≥6≥27 HRC
CTX-760Ø130–285≥760≥720≥4≥30 HRC
MTX-760Ø25–100≥760≥620≥12≥26 HRC
MTX-910Ø25–100≥910≥760≥10≥30 HRC
TS-725Ø25–100≥725≥655≥18≥93 HRB
TS-825Ø25–100≥825≥755≥15≥24 HRC
TS-965Ø25–100≥965≥895≥10≥24 HRC
TS-1250Ø25–100≥1250≥1100≥3≥36 HRC

Product forms

Round bars, Custom machined blanks

Made to order / stock on inquiry · Price on request

Typical applications

  • Rotary steerable drilling tool bushings and bearing sleeves
  • High-load wear rings and sliding components
  • Precision industrial bearing components

Selection checklist

  • Verify load, counterface material, lubrication, corrosion and service temperature.
  • Specify heat-treatment condition and required tensile, yield and hardness limits.
  • The brochure lists ≥1,250 MPa tensile strength for the TS-1250 condition—not for every C72900 condition.

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Cu–Ni–Sn alloys

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