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Incoloy 800H (UNS N08810/W.Nr.1.4958) steel pipes and tubes

Incoloy 800H Chemical composition:

Alloy
%
Ni
Cr
Fe
C
Mn
Si
Cu
S
Al
Ti
800

Min.

30
19
 
 
 
 
 
 
0.15
0.15
Max.
35
23
balance
0.10
1.5
1
0.75
0.015
0.60
0.60
800H
Min.
30
19
 
0.05
 
 
 
 
0.15
0.15
Max.
35
23
balance
0.10
1.5
1
0.75
0.015
0.60
0.60
800HT
Min.
30
19
 
0.06
 
 
 
 
0.15
0.15
Max.
35
23
balance
0.10
1.5
1
0.75
0.015
0.60
0.60
AI+Ti: 0.85-1.20

Incoloy 800H Physical properties
Density
8.0 g/cm³
Melting point
1350-1400 ℃

Incoloy 800H Alloy minimum mechanical properties in the room temperature
Alloy
Tensile strength
Rm N/mm²
Yield strength
R P 0. 2N/mm²
Elongation
A 5 %
800
500
210
35
800H
450
180
35

 
 

 

800H Characteristic as below:
1.Excellent corrosion resistance in the water media of the extremely high temperature of 500℃.
2.Good stress corrosion resistance
3.Good machining
 
Incoloy 800H Metallurgical structure:
800H is the face-centered cubic lattice structure, very low carbon content and increased Ti:C rate improve the stability of the structure, anti-allergy, and anti-intergranular corrosion. Low temperature annealing around 950℃ ensure the fine grain structure.
 
Incoloy 800H Corrosion resistance:
800H can not be corroded in many kinds of media. Its higher nickel content made it have good stress corrosion resistance cracking properties in the water corrosion condition. High chromium content made it better resistance to pitting and crevice corrosion cracking. This alloy can resist nitric acid and organic acid, but it is not so fine in the sulfuric acid and hydrochloric acid.
800H have good corrosion resistance to both oxidation and non-oxidizing salt, but maybe a little pitting in halide, and also excellent properties in the mixture of water, smoke, steam, air and carbon dioxide.
 
Incoloy 800H Application range and field:
1.Nitrate condenser---Corrosion resistance of Nitric acid
2.Steam heating pipes--Very good mechanical properties
3.Heat up element tube--Very good mechanical properties
 
For the application of up to 500℃ environment, alloy state supplies change to annealing.

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Contact Us
  • Jiangyin Donghao Stainless Steel Tube Co.,Ltd
  • Add:No.88,Zhenyang Road, Qingyang Town, Jiangyin City, Jiangsu Province,People's Republic of China.
  • Email:Sales@dh-pipe.com
  • Tel:0086-512-58220050
  • Fax:0086-512-58810865
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