Material No.: 2.4619

DescriptionChemical
composition		Physical
mechanical
properties		Temparature
information		StandardsProcess
information		Application
Certification		ProductsAll

Description

EN symbol (short)NiCr22Mo7Cu
Alloy G3
UNSN 06985
Registered work's labelNicrofer®4823 hMo
Density ln/in.30,30
Hardness HB240
CompositionNickel Chrome Molybdenum Wolfram alloy
CategoryCorrosion resisting steels and alloys
Structure
Corrosionhigh resistance to pitting corrosion in oxidising and reducing substances
DescriptionMaterial 2.4619 (alloy G-3) is a chemically stable and high-temperature resistant alloy, which is well weldable and has a good stability against grain border corrosion in welded condition.

Chemical Composition

 CMnPSCrMoSiCoFeNiCuNb+TaWCb(Nb)
2.4619Min %    21,006,00  18,00balance1,50   
Max %0,0151,000,0250,01523,508,001,005,0021,00balance2,500,501,50 
(Key to Steel 2010)
alloy G3
N 06985		Min %    21,006,00  18,00balance1,50   
Max %0,0151,000,040,0323,508,001,005,0021,00balance2,50 1,500,50
ASTM B 622

Physical properties

PropertyValue
Density: ln/in.30,30
Hardness: HB240
Permeability at 20°C/68°F< 1,01
Temperature T
°C/F
(°C/F)		Specific heat
J / kgK
(Btu / lb °F)		Thermal conductivity
W/mK
(Btu·in / ft2·h·°F)		Electric resistance
µΩ · cm
(Ω circ mill / ft)		Modulus of elasticity
kN/mm2
(103 ksi)		Expansion rate from 70°F bis T
10-6 / K
(10-6 / °F)
20 / 68441 / 0,10511.1 / 77115211 
100 / 21245212.6 /...11720514,3
204 /400..../0,110..../ 9911919914,7
300 / 572471/ ....16.0 /...12119215,0
427 / 800.... /0,115..../ 12612318615,3
538 /100.... /0,117.../ 13712518015,7
600 /111249521.0 /...12617316,1
649 /1200..../ 0,119..../ 15112716716,5
700 /1292503 /...22,6 /...   

Mechanical properties (20°C / 68°F)

Yield strength (0,2% offset) ksi35-30
Yield strength(1% offset) ksi33-38
Tensile strength min.ksi90-85
Elongation A5 %35-45
Remarks 

Temparature information

Solution heat treatment
Working temperature2012 ºF  to 2120 ºF 
Explanation reportquick cooling with air/water
Solution heat treatment
Working temperature2246 ºF  to 1742 ºF 
Explanation reportcooling with air

Standards / information

StandardsDesciption
ASTM B 619Standard Spezifikation for Welded Nickel and Alloy Pipe
ASTM B 622Standard Specification for Seamless Nickel and Nickel-Cobalt Alloy Pipe and Tube
ASTM B 626Standard Specification for Welded Nickel and Nickel-Cobalt Alloy Tube
DIN 17744 (2002/09)nickel-forgeable alloy with molybdenum and chrome
DIN 17750 (2002/09)ribbons and sheet metal out of nickel with nickel-wrought alloy properties
DIN 17751 (2002/09)tubes out of nickel with nickel-wrought alloy properties
DIN 17752 (2002/09)rod made from nickel with nickel-wrought alloy properties

Process information

Welding
 - Typewell weldable
 - Add. materialcovered rod electrode 2.4621

Main fields of application

Details of applicationAlloy 2.4619 (alloy G-3) is used in flue gas scrubbers, and with phosphoric and sulphuric acid.
CertificationsNACE Mr 01-75
offshore plants
sea and lake water plants
petrochemical industryPetrochemische Anlagen
Chemical IndustryEssigsäureanlagen
Fertiliser industry
drilling equipmentacid gas production

Range of products

Product typeProduct
Bar steelhexagon steel

Liability exclusion

All aforementioned specifications serve as a general orientation and have to be reviewed depending on the conditions of use.
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