Heat-treatment equipment, pyrolysis tubes and piping systems used in petrochemical plants, sheathing for electrical heating elements, and food processing equipment.
INCOLOY 800Composition detail (annealed)
Al (aluminum)
0
–
1
%
Cr (chromium)
19
–
23
%
Cu (copper)
0
–
0.75
%
Fe (iron)
39.5
–
50
%
Mn (manganese)
0
–
1.5
%
Ni (nickel)
30
–
35
%
Si (silicon)
0
–
1
%
Ti (titanium)
0.15
–
0.6
%
Other
0
–
0.1
%
INCOLOY 800Physical properties (annealed)
Density
7.85
–
8.05
g/cm3
INCOLOY 800Mechanical properties (annealed)
Young’s modulus
190
–
200
GPa
Specific stiffness
23.8
–
25.2
MN.m/kg
Yield strength (elastic limit)
205
–
415
MPa
Tensile strength
515
–
725
MPa
Specific strength
25.8
–
52.2
kN.m/kg
Elongation
30
–
60
% strain
Compressive strength
225
–
350
MPa
Flexural modulus
190
–
200
GPa
Flexural strength (modulus of rupture)
205
–
415
MPa
Shear modulus
70
–
76
GPa
Bulk modulus
186
–
224
GPa
Poisson’s ratio
0.33
–
0.35
Shape factor
29
Hardness – Vickers
160
–
200
HV
Hardness – Rockwell B
67
–
87
HRB
Hardness – Rockwell C
0
–
5
HRC
Hardness – Brinell
120
–
170
HB
Elastic stored energy (springs)
118
–
403
kJ/m3
Fatigue strength at 10^7 cycles
200
–
255
MPa
Fatigue strength model (stress range) Parameters: Stress Ratio = -1, Number of Cycles = 1e7cycles
INCOLOY 800Optical, aesthetic and acoustic properties (annealed)
Transparency
Opaque
Acoustic velocity
4880
–
5020
m/s
Mechanical loss coefficient (tan delta)
5e-4
–
0.0011
INCOLOY 800Processing properties (annealed)
Metal casting
Unsuitable
Metal cold forming
Acceptable
Metal hot forming
Acceptable
Metal press forming
Acceptable
Metal deep drawing
Unsuitable
Machining speed
9.75 m/min
Weldability Notes: Preheating is not required, post weld heat treatment is required
Good
Weldability – MIG
Fair
Weldability – plasma
Fair
Weldability – SAW
Fair
Weldability – TIG
Fair
Brazeability
Good
INCOLOY 800Durability (annealed)
Water (fresh)
Excellent
Water (salt)
Excellent
Weak acids
Excellent
Strong acids
Acceptable
Weak alkalis
Excellent
Strong alkalis
Excellent
Organic solvents
Excellent
Oxidation at 500C
Excellent
UV radiation (sunlight)
Excellent
Galling resistance (adhesive wear) Notes: Bronze or zinc alloy dies should be used to minimize galling.
Limited use
Flammability
Non-flammable
INCOLOY 800Corrosion resistance (annealed)
Pitting resistance equivalent number (PREN)
19 – 23
Pitting and crevice corrosion
Medium (20-30)
Stress corrosion cracking Note: Rated in chloride; Other susceptible environments: Hydroxide
Not susceptible
Intergranular (weld line) corrosion
Excellent
Inorganic acids
Excellent
Organic acids
Excellent
Alkalis
Good
Humidity / water
Excellent
Sea water
Moderate
Sour oil and gas
Excellent
INCOLOY 800Notes (annealed)
Warning
All nickel compounds should be regarded as toxic. Some can cause cancer and/or fetal abnormalities.
Other notes
INCOLOY is a registered tradename of the INCO group of companies.
As of September 1999 , INCONEL, INCOLOY, MONEL, NIMONIC, INCO-WELD, NILO, BRIGHTRAY, CORRONEL and UDIMET have become registered trademarks of Special Metals Corporation
INCOLOY 800Standards with similar compositions (annealed)
Japan: NCF 800 TF to JIS G3467, NCF800 to JIS G4901, NCF800 to JIS G4902, NCF800TB to JIS G4904, NCF800TP to JIS G4903
South Korea: Incoloy 800 to KS D 3750, NCF 800 to KS D 3531, NCF 800 to KS D 3532, NCF 800 TP to KS D 3758
USA: UNS N08800
Tradenames: ALLEGHENY TYPE 332, ESSHETE 800, ESSHETE 800L
