Gold / Au

  • General Designation: Gold
  • Applications: plugging contacts, switching contacts, anodes, IC carriers
  • Product Forms: ingots, wire, sheet, strip
  • Density (g/cm³): 19.3

Details

Age Hardenable
No
Material Behaviour
ductile
Forming Process
formable, machinable, can be roll clad

Observations¹
In contact with
Temperature (°C)
Medium
Condition
Corrosion
20 hydrogen sulphide H2S moist no measurable corrosion
20 gaseous F2 no measurable corrosion
20 hydrofluoric acid 40% no measurable corrosion
20 hydrochloric acid HCl 36% no measurable corrosion
20 sodium hypochlorite NaClO no measurable corrosion
20 nitric acid HNO3 65% no measurable corrosion
20 hydro-iodic acid HI 57% no measurable corrosion
20 sulphuric acid H2SO4 96% no measurable corrosion
20 gaseous Cl2 dry relatively severe attack
20 ethanol/iodine relatively severe attack
20 hydrochloric acid/H2O2 total corrosion
20 gaseous Cl2 moist total corrosion
20 potassium cyanide KCN total corrosion
20 bromine water total corrosion
20 hydrochloric acid/chlorine 20%/saturated total corrosion
20 dry Br2 moist total corrosion
20 dry Br2 dry total corrosion
20 aqua regia HNO3+HCl total corrosion
80 hydrochloric acid/chlorine 20%/saturated total corrosion
100 nitric acid HNO3 65% no measurable corrosion
100 copper(II) chloride CuCl2 no measurable corrosion
100 hydrochloric acid HCl 36% no measurable corrosion
100 sodium hypochlorite NaClO no measurable corrosion
100 phosphoric acid no measurable corrosion
100 hydro-iodic acid HI 57% no measurable corrosion
100 hydrobromic acid HBr 60% no measurable corrosion
100 sulphuric acid H2SO4 96% no measurable corrosion
100 acetic acid 99% no measurable corrosion
100 hydrochloric acid/H2O2 total corrosion
100 potassium cyanide KCN total corrosion
100 hydrochloric acid/chlorine 20%/saturated total corrosion
100 aqua regia HNO3+HCl total corrosion
150 aqua regia HNO3+HCl total corrosion
300 sulphuric acid H2SO4 96% relatively severe attack
440 potassium bisulphate KHSO4 air access light corrosive attack
500 sodium hydroxide NaOH air access light corrosive attack
500 potassium hydroxide KOH air access total corrosion
550 molten NaCN/KCN (2:1) air access total corrosion
700 air access total corrosion
700 molten NaCN air access total corrosion
800 sodium hydroxide NaOH air access total corrosion
800 potassium hydroxide KOH air access total corrosion
Corrosion Resistant
see Table
Sources Chemical
¹ Edelmetall-Taschenbuch, ISBN 3-7785-2448-8

IACS Min. (%) [100% IACS ≙ 58 S*m/mm²]
74.78
IACS Max. (%) [100% IACS ≙ 58 S*m/mm²]
78.18
Thermo-emf. vs. copper Hard (mV)
-0.01
Temperature coefficient of electric resistivity
From Temperature (°C)
To Temperature (°C)
Hard (x10-4/K)
Annealed (x10-4/K)
0 100 35 37
Sliding Contact
From Ampere
To Ampere
From Volt
To Volt
0 1 0 30

Young's Modulus (GPa)
78
Modulus of Rigidity (GPa)
28
Poission's ratio
0.42
Property Range
Hardness (HV)
Tensile Strength (MPa)
Yield Strength (MPa)
Elongation (%)
40 - 90 180 - 300 50 - 260 3 - 40

Melting Range
From Temperature (°C)
To Temperature (°C)
1064
Thermal conductivity (W /(m*K)) [RT]
312
Linear Coefficient of Expansion³
From Temperature (°C)
To Temperature (°C)
Coefficient (x10-6/K)
0 100 13.9
0 200 14.8
0 300 15.2
0 400 15.3
0 500 15.5
0 600 15.7
0 700 15.9
0 800 16.2

Disclaimer

The information in this data sheet contains only general information on the use of our products or examples for their application. They do not release the customer from a careful inspection of the delivered product for its fitness for the customer's particular purpose of use. Any customer's special requests regarding the particular use of a product will only be authoritative if Heraeus has confirmed to the customer in writing at the time of conclusion of a corresponding contract that the product delivered is fit for the customer's intended use. Heraeus, therefore, does not guarantee the correctness and completeness of the information regarding the customer's intended use. The customer's purchase will be governed exclusively by the written order confirmation of Heraeus and the Heraeus General Terms of Sale and Delivery, which are available at www.heraeus.com/gtc. This data sheet may be subject to changes at any time.

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