Silver

Silver

Silver

Silver has the highest electrical and thermal conductivity of any metal, and the highest reflectance in the visible range. It serves as a core material in electrical contacts, brazing alloys, electronic pastes and optical coatings.

Silver has the highest electrical and thermal conductivity of any metal, and the highest reflectance in the visible range. It serves as a core material in electrical contacts, brazing alloys, electronic pastes and optical coatings.

Silver has the highest electrical and thermal conductivity of any metal, and the highest reflectance in the visible range. It serves as a core material in electrical contacts, brazing alloys, electronic pastes and optical coatings.

47
Ag
107.868
962Melting point °C
10.5Density g/cm³
429Thermal conductivity W/m·K
18.9Thermal expansion µm/m·K
INTRODUCTION
Ag

Silver

It has the highest electrical and thermal conductivity of any metal. Combined with tungsten, it becomes a contact material that withstands arcing while conducting well.

WAg(70:30)pure Ag
Machined silver composite parts
INTRODUCTION
Ag

Silver

It has the highest electrical and thermal conductivity of any metal. Combined with tungsten, it becomes a contact material that withstands arcing while conducting well.

WAg(70:30)pure Ag
Machined silver composite parts
WHY SILVER

The metal that conducts best

01
429 W/m·K, the highest thermal conductivity of any metal

It carries heat away fastest. Losses are low in both heat dissipation and contacts.

02
The highest electrical conductivity of any metal

It carries more current through the same cross-section.

03
Combined with tungsten it withstands the arc

WAg(70:30) reduces contact welding while keeping conductivity.

KEY PROPERTIES

Key Properties

962 °C
Melting point
A low-melting metal
10.5
Density g/cm³
Medium density
429
Thermal conductivity W/m·K
The highest of any metal
18.9
Thermal expansion µm/m·K
Relatively large
Composite
Main form of use
W-Ag composite
2 grades
Supply grades
WAg(70:30) · pure Ag

Figures are representative values. The thermal expansion coefficient is taken from published literature and needs review before release; actual delivery specifications follow the per-lot test report.

WHY SILVER

The metal that conducts best

01
429 W/m·K, the highest thermal conductivity of any metal

It carries heat away fastest. Losses are low in both heat dissipation and contacts.

02
The highest electrical conductivity of any metal

It carries more current through the same cross-section.

03
Combined with tungsten it withstands the arc

WAg(70:30) reduces contact welding while keeping conductivity.

KEY PROPERTIES

Key Properties

962 °C
Melting point
A low-melting metal
10.5
Density g/cm³
Medium density
429
Thermal conductivity W/m·K
The highest of any metal
18.9
Thermal expansion µm/m·K
Relatively large
Composite
Main form of use
W-Ag composite
2 grades
Supply grades
WAg(70:30) · pure Ag

Figures are representative values. The thermal expansion coefficient is taken from published literature and needs review before release; actual delivery specifications follow the per-lot test report.

WHY SILVER

The metal that conducts best

01
429 W/m·K, the highest thermal conductivity of any metal

It carries heat away fastest. Losses are low in both heat dissipation and contacts.

02
The highest electrical conductivity of any metal

It carries more current through the same cross-section.

03
Combined with tungsten it withstands the arc

WAg(70:30) reduces contact welding while keeping conductivity.

KEY PROPERTIES

Key Properties

962 °C
Melting point
A low-melting metal
10.5
Density g/cm³
Medium density
429
Thermal conductivity W/m·K
The highest of any metal
18.9
Thermal expansion µm/m·K
Relatively large
Composite
Main form of use
W-Ag composite
2 grades
Supply grades
WAg(70:30) · pure Ag

Figures are representative values. The thermal expansion coefficient is taken from published literature and needs review before release; actual delivery specifications follow the per-lot test report.

Comparison

Conductive metals compared

Properties

Aluminum (Al)

Aluminum (Al)

Copper (Cu)

Copper (Cu)

Silver

Silver

Electrical conductivity (×10⁶ S/m)

Electrical conductivity (×10⁶ S/m)

37.7

37.7

59.6

59.6

63.0 (the highest)

63.0 (the highest)

Thermal conductivity (W/m·K)

Thermal conductivity (W/m·K)

237

237

401

401

429 (the highest)

429 (the highest)

Visible-light reflectance

Visible-light reflectance

About 90%

About 90%

About 60%

About 60%

About 95% (the highest)

About 95% (the highest)

Key features

Key features

A light, inexpensive conductor

A light, inexpensive conductor

The most widely used conductor

The most widely used conductor

The best metal for electricity, heat and light alike

The best metal for electricity, heat and light alike

FORMS OF SUPPLY

Supply Forms

Form
Specification
Main applications
Wire · Rod stock
On request
Drawn-wire parts, heating and electrode parts
Sheet · Plate
On request
Plate-machined parts, target stock
Rod · Bar
On request
Machining stock
Custom machined parts
To drawing
Wire EDM, laser machining, welded assemblies
FORMS OF SUPPLY

Supply Forms

Form
Specification
Main applications
Wire · Rod stock
On request
Drawn-wire parts, heating and electrode parts
Sheet · Plate
On request
Plate-machined parts, target stock
Rod · Bar
On request
Machining stock
Custom machined parts
To drawing
Wire EDM, laser machining, welded assemblies
CNC precision machining floor

Advanced material supply and machining,
a global material leader

From raw material to finished part, the best solution seen from your side.

Weekdays 9:00 AM – 5:30 PM (alternate Fridays until 4:00 PM; closed weekends and public holidays)

CNC precision machining floor

Advanced material supply and machining,
a global material leader

From raw material to finished part, the best solution seen from your side.

Weekdays 9:00 AM – 5:30 PM (alternate Fridays until 4:00 PM; closed weekends and public holidays)

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KOREA TUNGSTEN CO.,LTD

KOREA TUNGSTEN CO.,LTD

Refractory metal supply and ultra-precision machining — core materials for semiconductor, display, defense, space, medical & radiation.

INNOMT LLC

INNOMT CO.,LTD

Korea Tungsten's official overseas division

© 2026 Korea Tungsten Co., Ltd. All rights reserved. 83 Bideukbawi-gil, Jori-eup, Paju-si, Gyeonggi-do 10949, Korea (364-2 Osan-ri)   +82-31-975-1717

© 2026 INNOMT Co., Ltd. All rights reserved. Unit A-1710, IS Biz Tower Hangang 3, 50 Eutteum-ro, Deogyang-gu, Goyang-si, Gyeonggi-do 10543, Korea +82-2-6408-4239

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KOREA TUNGSTEN CO.,LTD

KOREA TUNGSTEN CO.,LTD

Refractory metal supply and ultra-precision machining — core materials for semiconductor, display, defense, space, medical & radiation.

INNOMT LLC

INNOMT CO.,LTD

Korea Tungsten's official overseas division

© 2026 Korea Tungsten Co., Ltd. All rights reserved. 83 Bideukbawi-gil, Jori-eup, Paju-si, Gyeonggi-do 10949, Korea (364-2 Osan-ri)   +82-31-975-1717

© 2026 INNOMT Co., Ltd. All rights reserved. Unit A-1710, IS Biz Tower Hangang 3, 50 Eutteum-ro, Deogyang-gu, Goyang-si, Gyeonggi-do 10543, Korea +82-2-6408-4239

Privacy Policy

Terms of Use

Cookie settings

KOREA TUNGSTEN CO.,LTD

KOREA TUNGSTEN CO.,LTD

Refractory metal supply and ultra-precision machining — core materials for semiconductor, display, defense, space, medical & radiation.

INNOMT LLC

INNOMT CO.,LTD

Korea Tungsten's official overseas division

© 2026 Korea Tungsten Co., Ltd. All rights reserved. 83 Bideukbawi-gil, Jori-eup, Paju-si, Gyeonggi-do 10949, Korea (364-2 Osan-ri)   +82-31-975-1717

© 2026 INNOMT Co., Ltd. All rights reserved. Unit A-1710, IS Biz Tower Hangang 3, 50 Eutteum-ro, Deogyang-gu, Goyang-si, Gyeonggi-do 10543, Korea +82-2-6408-4239

Privacy Policy

Terms of Use

Cookie settings