KINKOU158 copper alloy(Cu-Ni-Sn C72900)

KINKOU158® alloy is a Cu-Ni-Sn-based copper-based metastable decomposition-strengthened high-performance alloy.


Product Detail

Product Tags

* Achieve a combination of high rigidity and high strength. Can withstand dynamic impact loads. Can meet the most stringent requirements of static structural load and pressure. The thermal stress relaxation resistance is significantly better than beryllium copper alloy.
2. Excellent performance of anti-wear bearing, with the valuable performance of natural self-lubrication without friction pair seizure, it is a necessary material for the landing gear bearing of large aircraft, and is also the preferred friction component of oil well connecting rod and high temperature and high alternating load material.
*Turning performance is equivalent to easy turning brass alloy is very easy to process into complex components.
*Suitable for all kinds of acidic environment or salt water, high temperature corrosion resistance.
* Good welding performance.
*The electrical stability is significantly better than beryllium copper alloy. It does not generate magnetism and is a suitable material for high-temperature connectors and RF connectors.
*Non-toxic and harmless, environment-friendly materials.
1. Chemical Composition of C72900

Model

Ni

Sn

Other Alloy Elements

Impurities

Cu

C72900

14.5-15.5

7.5-8.8

0.2-0.6

≤0.15

Remnant

2. Physical Properties of C72900

Elastic Modulus

Poisson’s Ratio

Electrical Conductivity

Thermal Conductivity

Thermal Expansion Coefficient

Density

Permeability

21×10^6psi

0.33

<7% IACS

22 Btu/ft/hr/°F

9.1×10^-6 in/in/°F

0.325 lb/in^3

<1.001

144kN/mm^2

<4 MS/m

38 W/M/℃

16.4×10^-6 m/m/℃

9.00 g/cm^3

3. Minimum Mechanical Properties of C72900

State

Diameter

Yield Strength 0.2%

Ultimate Tensile Strength

 

Elongation

Hardness

Average CVN Impact Toughness

inch

mm

ksi

N/mm^2

ksi

N/mm^2

%(4D)

HRC

ft-lbs

J

Rod

TS 95

0.75-3.25

19-82

95

655

106

730

18

93 HRB

30*

40*

3.26-6.00

83-152.4

95

655

105

725

18

93 HRB

30*

40*

TS 120U

0.75-1.59

19-40.9

110

755

120

825

15

24

15

20

1.6-3.25

41-82

110

755

120

825

15

24

12

16

3.26-6.00

83-152.4

110

755

120

825

15

22

11**

14**

TS 130

0.75-6.00

19-152.4

130

895

140

965

10

24

-

-

TS 160U

0.25

<6.35

150

1035

160

1100

5

32

0.26-0.4

6.35-10

150

1035

160

1100

7

32

0.41-0.75

10.1-19

150

1035

165

1140

7

36

0.76-1.6

19.1-41

150

1035

165

1140

5

34

1.61-3.25

41.1-82

150

1035

160

1100

3

34

3.26-6.00

83-152.4

148

1020

160

1100

3

32

Wire

TS 160U

<0.25

<6.35

150

1035

160

1100

5

32

0.26-0.4

6.35-10

150

1035

160

1100

7

32

Tube

TS 105

1.50-3.05(External Diameter)
<0.4(Wall Thickness)

38-77(External Diameter)
<10(Wall Thickness)

105

725

120

830

15

22

1.50-3.05(External Diameter)
>0.4(Wall Thickness)

38-77(External Diameter)
>10(Wall Thickness)

105

725

120

830

16

22

14***

19***

TS 150

1.30-3.00(External Diameter)

33-76(External Diameter)

150

1035

158

1090

5

36

-

-

*:Any value is no less than 24 ft-lbs(32J)

**:Any value is no less than 10 ft-lbs(13.5J)

***:Any value is no less than 16J;Only samples of CVN(10mm weidth x 10mm thickness)

4. Standard Tolerance of Rod and Wire of C72900

State

Type

Diameter

Tolerance of Diameter

Tolerance of Straightness

inch

mm

inch

mm

inch

mm

TS 160U

Rod

0.25-0.39

6.35-9.9

+/-0.002

+/-0.05

length=10ft,deviation<0.25 inches

length=3048mm,deviation<6.35mm

0.4-0.74

10-18.9

+0.005/-0

+0.13/-0

TS 95,TS 120U,TS 130,TS 160U

Rod

0.75-1.6

19-40.9

+0.02/+0.08

+0.5/+2.0

length=10ft,deviation<0.5 inches

length=3048mm,deviation<12mm

1.61-2.75

41-70

+0.02/+0.10

+0.5/+2.5

2.76-3.25

70.1-82

+0.02/+0.145

+0.5/+3.7

3.26-6.00

83-152.4

+0.02/+0.187

+0.5/+4.75

TS 160U

Wire

<0.4

<10

+/-0.002

+/-0.05

 

 

5. Standard Tolerance of Tube of C72900

State

Diameter

Wall Thickness

Tolerance of Diameter

Tolerance of Straightness

inch

mm

mm

inch

mm

inch

mm

TS 160U

1.50-1.99

38-50

10-20% of External Diameter*

±0.010

±0.25

length=10ft,deviation<0.5 inches**

length=3048mm,deviation<12mm

2.00-3.050

51-76

10-20% of External Diameter*

±0.012

±0.30

TS 150

1.30-1.99

33-52

8-20% of External Diameter*

±0.008

±0.20

length=10ft,deviation<0.5 inches**

length=3048mm,deviation<12mm

2.00-3.00

53-79

6-10% of External Diameter*

±0.010

±0.25

*:For reference only. Please check with the steel plant for the required dimensions

**:Smaller straightness tolerance available

6. Application of C72900
It is mainly used for Sucker rod coupling, MWD equipment, shaft sleeve and gasket in petroleum industry;
Aircraft landing gear shaft sleeve and bearing; Pressure vessel seals; Slide guide;High temperature resistant and corrosion resistant connectors. etc.


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