The Value of Precious Metal Wires: Key Uses in Electronics & Aerospace

The Value of Precious Metal Wires: Key Uses in Electronics & Aerospace

What comes to mind when you think of precious metals like gold, platinum, or silver? Jewelry, maybe? Or maybe those shiny coins passed down from generation to generation? But did you know these metals are much more than just beautiful objects? They are integral parts of modern technology and industry, especially in the form of precious metal wires.

What Makes Precious Metal Wires Special?

Precious metal wires, including gold, platinum, silver, and specialized alloys, play a critical role in numerous high-tech industries. Their unique properties—such as exceptional conductivity, durability, and resistance to corrosion—make them essential in applications ranging from the intricate circuits of smartphones to the demanding environments of aerospace and medical devices. These wires aren't just a luxury; they’re fundamental to the performance and reliability of advanced technologies.

Gold WireThe Ultimate Conductor

Gold has been prized for centuries, and it’s easy to see why. When transformed into gold wire, its excellent electrical conductivity makes it ideal for electronic components, from high-performance connectors to microchips in computers and smartphones. Gold wire also stands out for its oxidation resistance, ensuring connections stay secure and last longer.

Key Uses:

  • Electronics (e.g., microchips and connectors
  • Aerospace components
  • Medical devices, particularly for implants and sensors 

Gold Wire

Platinum WireThe Resilient Wonder

Platinum, a metal known for its durability and high melting point, is used in wire form for various tough applications. Its resistance to corrosion and ability to withstand extreme temperatures make it the material of choice for high-performance devices, including temperature sensors, catalytic converters, and thermocouples.

Applications:

  • High-temperature environments
  • Chemical industry
  • Advanced electronics and sensors

Platinum Wire

Silver WireAffordable, Reliable, and Versatile

Silver is another great conductor, though it’s more affordable than gold or platinum. It’s often used where high electrical conductivity is required but on a budget. Silver wire is common in everyday applications like wiring for consumer electronics, solar cells, and various forms of communication equipment.

Common Uses:

  • Consumer electronics
  • Solar energy
  • Communication systems

Silver Wire 

Alloy Wires: Enhanced Performance

Precious metal alloys, such as platinum-rhodium and platinum-iridium, combine the best qualities of multiple metals, offering enhanced strength, durability, and performance. For instance, platinum-rhodium alloy wires are used extensively in thermocouples for temperature measurement because they provide high accuracy and long-term reliability.

Popular Alloys:

  • Platinum-Rhodium (PtRh) Wire: including grades like PtRh5, PtRh6, PtRh10, PtRh13, PtRh30, and PtRh40, are used for high-precision temperature measurements. Type B, Type R, and Type S thermocouple wires are commonly used in extreme heat environments, such as furnaces and aerospace, offering different temperature ranges for specific industrial needs.
  • Platinum-Iridium (PtIr) Wire: used in high-temperature environments and medical devices, available in grades such as PtRh5, PtRh6, PtRh10, PtRh13, PtRh30, and PtRh40 for precise temperature measurements.

 Platinum Rhodium/Iridium Alloy Wire

The Importance of Customization

While these precious metal wires are commonly used in standard applications, they can also be customized to meet specific needs. Whether it's a particular size, shape, or alloy composition, customization ensures that the wire performs exactly as needed for any particular project or industry.

For example, platinum wire can be made in various diameters ranging from 0.02mm to 10mm, depending on the exact requirement. Whether you're creating advanced sensors or producing high-end medical implants, having the right wire is key.

Let’s Talk Numbers:

Weight & Size

To understand the significance of these wires, it helps to look at some specifics. Below is a comparison of the theoretical weight of various precious metal wires per meter based on diameter and material. This will give you a sense of how precious metals compare in terms of weight and density.

Diameter (mm)

Theoretical Weight Per Meter Of Precious Metal Wire (g/m)

Pt

Au

Ag

PtRh6

PtRh10

PtRh30

3.0

151.5

136.4

74.11

145.2

141.4

124.5

2.9

141.61

127.5

69.26

135.7

132.1

116.3

2.8

132.0

118.9

64.57

126.6

123.1

108.4

2.7

122.8

110.5

60.03

117.75

114.5

100.84

2.6

113.8

102.4

55.67

109.1

106.2

93.48

2.5

105.2

94.75

51.47

100.9

98.17

86.44

2.4

97.00

87.32

47.43

92.96

90.23

78.66

2.3

89.07

80.21

43.57

85.39

83.1

73.16

2.2

81.50

73.36

39.86

78.11

76.02

66.94

2.1

74.25

66.85

36.32

71.17

69.26

60.98

2.0

67.35

60.64

32.95

64.57

62.84

55.33

1.9

60.79

54.73

29.73

58.26

56.7

49.92

1.8

54.56

49.11

26.68

52.29

50.89

44.80

1.7

48.66

43.81

23.80

46.65

45.39

39.96

1.6

43.11

38.81

21.08

41.31

40.21

35.96

1.5

37.89

34.11

18.83

36.32

35.34

31.12

1.4

33.00

29.72

16.14

31.63

30.79

27.11

1.3

28.46

25.63

13.92

27.28

26.55

23.37

1.2

24.24

21.84

11.86

23.25

22.62

19.92

1.1

20.37

18.34

9.97

19.53

19.01

16.73

1.0

16.84

15.16

8.24

16.14

15.7

13.83

0.9

13.64

12.28

6.67

13.07

12.75

11.20

0.8

10.78

9.70

5.27

10.33

10.06

8.85

0.7

8.26

7.43

4.04

7.91

7.68

6.78

0.6

6.07

5.46

2.96

5.82

5.65

4.98

0.5

4.21

3.80

2.06

4.03

3.92

3.45

0.4

2.69

2.43

1.32

2.58

2.53

2.21

0.3

1.52

1.37

0.74

1.45

1.42

1.24

0.2

0.674

0.607

0.33

0.65

0.63

0.55

0.1

0.168

0.152

0.08

0.16

0.16

0.14

0.09

0.136

0.123

--

--

--

--

0.08

0.108

0.097

--

--

--

--

0.07

0.083

0.075

--

--

--

--

0.06

0.061

0.055

--

--

--

--

0.05

0.042

0.038

--

--

--

--

0.04

0.027

0.024

--

--

--

--

0.03

0.015

0.014

--

--

--

--

0.02

0.0067

0.0061

--

--

--

--

Density & Hardness

When choosing precious metal wires, understanding their density and hardness is crucial. These properties directly impact their performance in various applications, from electronics to aerospace.

Material

Density (g/cm³)

Hardness

Platinum (Pt)

21.45

Soft

Gold (Au)

19.3

Soft

Silver (Ag)

10.49

Hard

PtRh6

20.55

Semi-Hard

PtRh10

20.0

Semi-Hard

PtRh30

17.61

Very Hard

Why Choose Precious Metal Wires?

  • High Performance: Their excellent conductivity, durability, and resistance to corrosion make them indispensable for high-end applications.
  • Reliability: These wires don’t just shine; they last. Precious metals are known for their stability and resilience, which ensures long-lasting performance.
  • Versatility: From electronics to medical devices, precious metal wires are found in industries that require precision and high standards.

At Heeger Materials, we’re proud to offer a wide range of precious metal wires, each selected and crafted for a specific purpose. Whether you're designing high-end electronics, aerospace components, or medical devices, you’ll find that our wires meet the highest standards for precision and performance.

We offer custom sizes to ensure that your project gets exactly what it needs. You’ll have the flexibility to choose from a variety of diameters, alloys, and compositions.

Interested in learning more about our precious metal wire or other precious metal product offerings? Get in touch with us at [email protected] to discuss your requirements and discover how our wires can support your project.