Material No.: 2.4605

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

Description

EN symbol (short)NiCr23Mo16Al
Alloy 59
UNSN 06059
Registered work's labelNicrofer®5923 hMo
Hastelloy®59alloy
Inconel®alloy 59
Density lb/in30,311
Hardness
CompositionNickel Chrome Molybdenum alloy
superalloy
CategoryCorrosion resisting steels and alloys
Structureaustenitic
DescriptionCorrosion resistant; high-temperature alloy
- suited for great demands concerning selective corrosion and corrosion by tension
- good durability against substances high in chloride and sulphuric acids
The chemically stable and high-temperature resistant nickel and cobalt alloy 2.4605 (alloy 59) is mainly used in the chemical industry, flue gas desulphurating plants, paper industry.
The alloy is listed in the BAM list for the transportation of dangerous goods

Chemical Composition

 CMnPSCrMoSiAlCoFeNiCu
2.4605Min %    22,0015,00 0,10  balance.
Max %0,0100,500,0250,01524,0016,500,100,400,301,50balance0,50
(Key to Steel 2010)
alloy 59
N 06059		Min %    22,0015,00 0,10  balance.
Max %0,0100,500,0150,00524,0016,500,100,400,301,50balance0,50
ASTM B 622

Physical properties

PropertyValue
Density: lb/in30,311
Permeability at 20°C/68°F≤ 1,001
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 / 68
(93 / 200)		414 (0,099)
(0,101)		10,4 (72)
(83)		126 (758)
(766)		210 (30,5)
(30)
(6,6)
100 / 21242512,112720711,9
200 / 392
(204 / 400)		434
(0,104)		13,7
(96)		129
(776)		200
(29)		12,2
(6,8)
300 / 572
(316 / 600)		443
(0,106)		15,4
(105)		131
(788)		196
(28,3)		12,5
(7,0)
400 / 752
(427 / 800)		451
(0,108)		17,0
(119)		133
(800)		19
(27,4)		12,7
(7,1)
500 / 932
(538 / 1000)		459
(0,110)		18,6
(132)		134
(806)		185
(26,4)		12,9
(7,2)
600 / 111246420,413317813,1

Mechanical properties (20°C / 68°F)

Yield strength(0,2% offset) min,ksi (MPa)45 (310)
Yield strength Rp1,0-
N/mm2		380-360
Tensile strength Rm min.ksi (MPa)
100 (690)
Elongation A5( % )
Elongation in 2 in.(50,8mm) A5( %)		45
ISO V Notched impact strength
at 20°C/68°F (J/cm2)		≥225
ISO V Notched impact strength
at -196°C/-320.8°F(J/cm2)		≥200
Remarks 

Temparature information

Application area
Operation temperature-321 ºF  to 842 ºF pressure vessel from -321°F to +842°F
Explanation reporttested under oxidising and reducing conditions in highly corrosive substances,
suitable for use with organic acids, such as acetic acid and formic acid
suitable for use with inorganic acids and solutions, such as phosphoric, nitric, hydrochloric and sulfuric acid
Solution heat treatment
Working temperature2156 ºF  to 2012 ºF 
Explanation reportsubsequent fast cooling with water
2000°F-1562°F
Solution heat treatment
Working temperature2156 ºF  to 1742 ºF 
Explanation reportquick cooling down in air or water (subsequent reheating if possible)
Processing informations(following heat treatment recommended)

Standards / information

StandardsDesciption
ASTM B 366Standard Specification for Factory-Made Wrought nickel and nickel alloy fittings
ASTM B 564-06Standard Specification for Nickel Alloy Forging
ASTM B 574Standard Specification for LOW-Carbon Nickel-Molybdenum Alloy Rod
ASTM B 575Standard Specification for Plate, Sheet and Strip
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
BAMfor transportation of dangerous goods
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
DIN 17753 (2002/09)wire out of nickel with nickel-wrought alloy properties
ISO 15156/ MR-01-75NACE MR 0175/ISO 15156 for Corrosion Resistant Alloys for Sulphide Service
VdTÜV-Werkstoffblatt 505extremely corrosion resistant nickel based alloy, NiCr23Mo16Al, material-nr. 2.4605; sheet metal, profile steel, rod steel, forging

Process information

Cold formingcold warming when annealed - high tendency to cold-work hardening
Chip removing processDue to danger of cold hardening low cutting speed and tools permanently at hand
Welding
 - Material classification acc. CEN ISO/TR 1560843
 - Typewell weldable
WIG
WIG electrode welding with hot wire addition
plasma welding
MIG/MAG
manual electric welding
 - Add. material2.4607,coated welding electrode 2.4609;2.4607;
 - Hintsno heat treatment necessary before or after welding process

Main fields of application

Details of application1. Due to low C and Si content no tendency to grain boundary precipitation with hot working and welding
2. Resistance to aggressive substances
- wet chlorine gas, hypochlorite and chlorine oxide solutions
- (also contaminated) inorganic acids (such as nitric acid, sulfuric acid, phosphoric acid, hydrochloric acid)
- reliable in highly corroding substances under oxidising and reducing conditions
- suited for usage with organic acids, such as acetic acid and formic acid
- suited for usage with mineral acids/solutions, such as phosphoric/nitric/hydrochloric/sulphuric acids
CertificationsPressure tanks with operating temperatures of- 196°C - 450°C/384.8°F - 842°F
- material is listed on BAM-List of dangerous goods' transportation
- for sour gas applications up to grade VII ( NACE MR0175 /ISO15156 )
Chemical Industrythe production of acetic acid
the production of hydrofluoric acid
for the production of acid gas
components for organic chemistry (in cloridic substances)
Power plants
Power engineeringstirring units
fans in moist environments
cellulose/paper industrychemical digestion containers
bleaching containers
offshore plantsSea water desalination plant

Range of products

Product typeProduct
Plates / Sheetsplate/sheet cuts
Rotating componentsfittings from barsteel
Fittingswelded elbows
welded reductions
Welded T-pieces
seamless elbows
seamless reductions
Flanges / Collars / Flared tube endsflared tube end
collars
various flanges (weld neck flange,blind flange etc.)
Pipes / Tubeswelded pipes/tubes
welded square pipes/tubes
seamless pipes/tubes
Bar steelflat steel
section steel
round bar steel
hexagon 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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