INCOLOY 800H/N08810 NICKEL ALLOY PIPE/TUBE
Incoloy 800H is a slightly modified version of Incoloy 800 with the 800H grade possessing higher creep and rupture strength. The modification of incoloy alloy 800H pipe is possible because of the closely controlled carbon content and modified heat treatment.
INCOLOY ALLOY 800H PIPE EQUIVALENT SPECIFICATION
Country
Body
Grade
USA
UNS
N08800
France
AFTER
Z8NC 32.21
GB
BS
NA 15
Germany
DIN
1.4876
INCOLOY ALLOY 800H PIPE PHYSICAL PROPERTIES
Properties
Metric Units
Density
7,940 kg /m3 @ 20℃
Melting Range
1357-1385. ℃
Electrical Resistivity
0.989 micro-ohm. m @ 20℃
Specific Heat
460y / kg. ℃@ 20℃
Mean Coefficient of Expansion
14. 4×10 / ℃ @ 20℃
Thermal Conductivity
11. 5W / m. @ 20℃
Curie Temperature
-115℃
Modulus of Elasticity
Tension
196.5 Gpa @ 20℃
Torsion
73.4 Gpa @ 20℃
Poisson’s Ratio
0 . 339 @ 20℃
INCOLOY ALLOY 800H PIPE CHEMICAL COMPOSITION
Element
Incoloy 800
Incoloy 800H
Incoloy 800HT
Nicke
30.00-35.00
30.00-35.00
30.00-35.00
Chromium
19.00-23.00
19.00-23.00
19.00-23.00
Iron
39.50 min
39.50 min
39.50 min
Carbon
0.10 max
0.10 max
0.10 max
Aluminum
0.15-0.60
0.15-0.60
0.25-0.60
Titanium
0.15-0.60
0.15-0.60
0.25-0.60
Aluminum + Titanium
0.30-1.20
0.30-1.20
0.30-1.20
ASTM Grain Size
Not Specified
5 or Coarser
INCOLOY ALLOY 800H PIPE MECHANICAL PROPERTIES
Incoloy 800H/N08810 Nickel Alloy Pipe/Tube
Yield Strength
Tensile Strength
Elongation
Mpa
Mpa
%
Incoloy 800, 800H, 800HT
Hot Finished Annealed
170
450
30
Incoloy 800
Cold Worked. Annealed
205
520
30
INCOLOY ALLOY 800H PIPE HIGHLIGHTS
Incoloy 800H(UNS N08810) pipe has a restricted carbon content range of 0.05 to 0.10%, which is in the upper portion of that of Incoloy 800 tube and is annealed at 1149 to 1177℃ (Incoloy 800 is annealed at 983 to 1038℃). These differences impart Incoloy 800H pipe to have higher stress rupture and creep properties than Incoloy 800.
