JIS G3467, JIS G4901, JIS G4902, JIS G4903, JIS G4904
Incoloy 800H (annealed) Typical uses
Heat, corrosion, and creep resistant applications, heat exchangers, process piping, petrochemical and chemical processing, pressure vessels, industrial furnaces
Incoloy 800H (annealed) Composition detail
Al (aluminum)
0.15
–
0.6
%
C (carbon)
0.05
–
0.1
%
Co (cobalt)
0
–
1.5
%
Cr (chromium)
19
–
23
%
Cu (copper)
0
–
0.75
%
Fe (iron)
39.5
–
47
%
Mn (manganese)
0
–
1.5
%
Ni (nickel)
30
–
35
%
P (phosphorus)
0
–
0.045
%
S (sulfur)
0
–
0.015
%
Si (silicon)
0
–
1
%
Ti (titanium)
0.15
–
0.6
%
Incoloy 800H (annealed) Physical properties
Density
7.9
–
7.98
g/cm3
Incoloy 800H (annealed) Mechanical properties
Young’s modulus
190
–
200
GPa
Specific stiffness
23.9
–
25.2
MN.m/kg
Yield strength (elastic limit)
170
–
262
MPa
Tensile strength
450
–
680
MPa
Specific strength
21.4
–
33
kN.m/kg
Elongation
35
–
70
% strain
Compressive modulus
190
–
200
GPa
Compressive strength
170
–
262
MPa
Flexural modulus
190
–
200
GPa
Flexural strength (modulus of rupture)
235
–
355
MPa
Shear modulus
71.6
–
75.2
GPa
Shear strength
337
–
510
MPa
Bulk modulus
198
–
208
GPa
Poisson’s ratio
0.335
–
0.345
Shape factor
63.9
Hardness – Vickers
165
–
200
HV
Hardness – Rockwell B
72
–
90
HRB
Hardness – Brinell
167
–
192
HB
Elastic stored energy (springs)
77
–
169
kJ/m3
Fatigue strength at 10^7 cycles
225
–
340
MPa
Fatigue strength model (stress range) Parameters: Stress Ratio = -1, Number of Cycles = 1e7cycles
Incoloy 800H (annealed) Optical, aesthetic and acoustic properties
Transparency
Opaque
Acoustic velocity
4890
–
5020
m/s
Mechanical loss coefficient (tan delta)
5e-4
–
0.0011
Incoloy 800H (annealed) Processing properties
Metal casting
Unsuitable
Metal cold forming
Acceptable
Metal hot forming
Acceptable
Metal press forming
Acceptable
Metal deep drawing
Unsuitable
Machining speed
7.62 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 800H (annealed) Heat treatment
Solution anneal at 1120-1190°C (2050-2170°F), air cool or faster
Carbon equivalency
1.51 – 2
Incoloy 800H (annealed) Durability
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)
Limited use
Flammability
Non-flammable
Incoloy 800H (annealed) Corrosion resistance
Pitting resistance equivalent number (PREN)
19.4 – 22.7
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 800H (annealed) Notes
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 800H (annealed) Standards with similar compositions
