Platinum / Pt

  • General Designation: Platinum
  • Applications: crucibles, casting dishes, electrodes, semi-finished products, thermocouple thimbels, laboratory equipment (crucibles), crystal growth crucibles, glass manufacturing
  • Product Forms: wire, sheet, tube
  • Density (g/cm³): 21.45

Density - HT

Details

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

Observations
In contact with
Temperature (°C)
Medium
Condition
Corrosion
20 gaseous Cl2 dry light corrosive attack
20 gaseous F2 light corrosive attack
gaseous Cl2 moist light corrosive attack
20 hydrobromic acid HBr 60% light corrosive attack
20 hydrochloric acid/chlorine saturated light corrosive attack
20 hydrochloric acid/chlorine '- light corrosive attack
20 hydrofluoric acid HF 40 % no measurable corrosion
20 ethanol/iodine no measurable corrosion
20 hydrogen sulphide H2S moist no measurable corrosion
20 solid moist no measurable corrosion
20 solid dry no measurable corrosion
20 potassium cyanide KCN no measurable corrosion
20 bromine water no measurable corrosion
20 hydrochloric acid HCl 36 % no measurable corrosion
20 sodium hypochlorite NaClO no measurable corrosion
20 hydro-iodic acid HI 57% no measurable corrosion
20 sulphuric acid H2SO4 96% no measurable corrosion
20 nitric acid HNO3 65% no measurable corrosion
20 hydrofluoric acid 40% no measurable corrosion
20 hydrochloric acid HCl 36% no measurable corrosion
20 hydrochloric acid HCl 65% no measurable corrosion
20 selenic acid H2SeO4 no measurable corrosion
20 dry Br2 dry relatively severe attack
20 dry Br2 moist relatively severe attack
20 aqua regia HNO3+HCl total corrosion
80 hydrochloric acid/chlorine 20 % / saturated total corrosion
100 hydrochloric acid HCl 65% light corrosive attack
100 phosphoric acid light corrosive attack
100 hydrochloric acid/bromine light corrosive attack
100 orthophosphoric acid no measurable corrosion
100 copper(II) chloride CuCl2 no measurable corrosion
100 sulphuric acid H2SO4 96% no measurable corrosion
100 hydrochloric acid HCl 36% no measurable corrosion
100 sodium hypochlorite NaClO no measurable corrosion
100 acetic acid 99% no measurable corrosion
100 nitric acid HNO3 65% no measurable corrosion
100 mercury chloride HgCl2 no measurable corrosion
100 aluminium sulphate Al2(SO4)3 no measurable corrosion
100 potassium cyanide KCN relatively severe attack
100 hydrochloric acid/chlorine 20% / saturared relatively severe attack
100 selenic acid H2SeO4 relatively severe attack
100 hydrogen peroxide H2O2 total corrosion
100 aqua regia HNO3+HCl total corrosion
100 hydro-iodic acid HI 57% total corrosion
100 hydrobromic acid HBr 60% total corrosion
150 aqua regia HNO3+HCl total corrosion
300 sulphuric acid H2SO4 96% light corrosive attack
440 potassium bisulphate KHSO4 air access no measurable corrosion
500 sodium hydroxide NaOH air access light corrosive attack
500 potassium hydroxide KOH air accesss relatively severe attack
550 molten NaCN/KCN (2:1) air access relatively severe attack
700 molten NaCN air access relatively severe attack
ZrO2 1000 hydrogen H2 light corrosive attack
BN 1000 CO light corrosive attack
BN 1000 air no measurable corrosion
BN 1000 hydrogen H2 no measurable corrosion
ZrO2 1000 CO no measurable corrosion
SiO2 1000 CO no measurable corrosion
Al2O3 1000 CO no measurable corrosion
MgO 1000 CO no measurable corrosion
ZrO2 1000 forming gas N2H2 95/5 no measurable corrosion
SiO2 1000 forming gas N2H2 95/5 no measurable corrosion
Al2O3 1000 forming gas N2H2 95/5 no measurable corrosion
MgO 1000 forming gas N2H2 95/5 no measurable corrosion
BN 1000 forming gas N2H2 95/5 no measurable corrosion
ZrO2 1000 air no measurable corrosion
SiO2 1000 air no measurable corrosion
Al2O3 1000 hydrogen H2 no measurable corrosion
Al2O3 1000 air no measurable corrosion
MgO 1000 air no measurable corrosion
PbO 1000 air no measurable corrosion
P2O5 1000 air no measurable corrosion
SiO2 1000 hydrogen H2 no measurable corrosion
MgO 1000 hydrogen H2 no measurable corrosion
P2O5 1000 hydrogen H2 relatively severe attack
P2O5 1000 forming gas N2H2 95/5 relatively severe attack
P2O5 1000 CO relatively severe attack
PbO 1000 hydrogen H2 total corrosion
PbO2 1000 forming gas N2H2 95/5 total corrosion
PbO 1000 forming gas N2H2 95/5 total corrosion
PbO2 1000 CO total corrosion
PbO 1000 CO total corrosion
PbO2 1000 hydrogen H2 total corrosion
Corrosion Resistant
see Table

IACS Min. (%) [100% IACS ≙ 58 S*m/mm²]
15.78
IACS Max. (%) [100% IACS ≙ 58 S*m/mm²]
16.07
Thermo-emf. vs. copper Hard (mV)
-0.77
Temperature coefficient of electric resistivity
From Temperature (°C)
To Temperature (°C)
Hard (x10-4/K)
Annealed (x10-4/K)
0 100 39.2
0 200 38.7
0 300 38.1
0 400 37.6
0 500 37.1
0 600 36.5
0 700 36
0 800 35.3
0 900 34.7
0 1000 34
0 1100 33.4
0 1200 32.5
0 1300 31.7
0 1400 30.9
0 1500 30
0 1600 29.2

Young's Modulus (GPa)
170
Young's Modulus - HT¹
Modulus of Rigidity (GPa)
66
Poission's ratio
0.39
Yield Strength RP0,2 - HT²
Ult. Tensile Strength Rm - HT³
Tensile Fracture Elongation A - HT⁴
Annealed
Hardness (HV)
Tensile strength (MPa)
Yield strength (MPa)
Elongation (%)
42 150 70 40
Work hardened
Hardness (HV)
Tensile Strength (MPa)
Yield Strength (MPa)
Elongation (%)
98 330 290 3
Property Range
Hardness (HV)
Tensile Strength (MPa)
Yield Strength (MPa)
Elongation (%)
42 - 98 150 - 330 70 - 290 3 - 40
Sources Mechanical
¹Platinum Metals Review, 2001, 45(2), pp. 74-82 | ²measured | ³measured | ⁴measured

Melting Range
From Temperature (°C)
To Temperature (°C)
1769
Thermal conductivity (W /(m*K)) [RT]
74
Thermal conductivity - HT¹
Specific Heat (J/(g*K)
0.133
Specific Heat - HT²
Linear Coefficient of Expansion³
From Temperature (°C)
To Temperature (°C)
Coefficient (x10-6/K)
20 100 8.8
20 200 9.1
20 300 9.4
20 400 9.5
20 500 9.6
20 600 9.6
20 700 9.9
20 800 10
20 900 10.1
20 1000 10.3
20 1100 10.5
20 1200 10.6
20 1300 10.8
20 1400 11
20 1500 11.2
20 1600 11.4
Sources Thermal
¹Edelmetalltaschenbuch ISBN 3-7785-2448-8 | ²Edelmetalltaschenbuch ISBN 3-7785-2448-8 | ³Edelmetalltaschenbuch ISBN 3-7785-2448-8

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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