Incoloy Alloy 800 vs 800H

Incoloy Alloy 800 is an alloy containing a small amount of aluminum and titanium and a high content of chromium and nickel. Its Cr content is 15-25% and Ni content is 30-45%. Incoloy 800H is an iron nickel base alloy with a chromium content of 12%.

The different carbon content of Incoloy800 and Incoloy800H makes them very different. The carbon content of INCOLOY ALLOY 800 is below 0.1, and the carbon content of Incoloy 800H is 0.05-0.1.

Chemical composition:

Alloy	Chemical element	Cr	Ni	C	Mn	Cu	Fe	Si	S	AI	Ti
800	min	15	30	-	-	-	margin	-	-	0.15	0.15
800	max	25	35	0.10	1.5	0.75	margin	1	0.015	0.60	0.60
800H	min	19	30	0.05	-	-	margin	-	-	0.15	0.15
800H	max	23	35	0.10	1.5	0.75	margin	1	0.015	0.60	0.60

Physical properties:

Alloy	density	melting point	tensile strength	yield strength	Elongation
800	8.0 g/cm³	1350~1400℃	500Rm N/mm²	210RP0.2N/mm²	35%
800H	8.0 g/cm³	1350~1400℃	450Rm N/mm²	180RP0.2N/mm²	35%

Same characteristics:
1. Both have good corrosion resistance
2. Good processability
3. Excellent stress corrosion resistance

Applications:

Nitric acid condensers.
Steam heating tubes.
Heating element tubes.

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