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Platinum / Pt

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

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Observations¹

In contact with	Temperature (°C)	Medium	Condition	Corrosion
	20	gaseous Cl2	dry	light corrosive attack
	20	gaseous F2		light corrosive attack
	20	gaseous Cl2	moist	light corrosive attack
	20	hydrobromic acid HBr	60%	light corrosive attack
	20	hydrochloric acid/chlorine	saturated	light corrosive attack
	20
	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

Sources Chemical

¹ Edelmetall-Taschenbuch, ISBN 3-7785-2448-8

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

Hardness (HV)	Tensile strength (MPa)	Yield strength (MPa)	Elongation (%)
42	150	70	40

Hardness (HV)	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)
98	330	290	3

Hardness (HV)	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)
42 - 98	150 - 330	70 - 290	3 - 40

From Temperature (°C)	To Temperature (°C)
1769

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

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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Platinum / Pt

Forming Processes

Chemical

Electrical

Mechanical

Thermal

Disclaimer