Alloy 800HT

Alloy 800HT 1)Standard:ASTM B408 2)UNS N08811 3)Excellent corrosion resistance in the high temperature 4)Good machine

Alloy 800HT 

  Density: 8.0g/cm3

   

   Alloy 800HT (UNS N08811) is an austenitic high-strength solid-solution Ni-Fe-Cr alloy with controlled levels of carbon, aluminium, titanium, silicon and manganese and increased content of (Al+Ti).

 

   A special solution treatment gives highest creep-rupture strength above 700°C (1290°F) due to the precipitation of TiC.

1)Chemical compostion of Alloy 800HT

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

2)Characteristic of Alloy 800HT

· Excellent creep strength at temperature above 700°C (1290°F)

· Good resistance to reducing, oxidising and nitriding atmospheres and to atmospheres which alternate between reducing and oxidising conditions

· Metallurgical stability in long-term application at high temperatures

Where frequent excursions to temperatures lower than 700°C (1290°F) during service cannot be excluded or parts of the material with run permanently at a regime below 700°C (1290°F) the use of alloy 800H is recommended.

 

3)Specifiations:wire,strip,bar, sheet/plate,pipe/tubing,forgings,etc.

 

Specifications
Sheet/plate	Round bar	Welded Pipe	Seamless Tube	Fittings	Forgings
ASME SB-409 AMS 5871	ASME SB-408 AMS 5766	ASME SB-514 ASME SB-515 ASMES SB-751 ASME SB-775	ASME SB-407 ASME SB-829 ASME SB163	ASME SB-366	ASME SB-564 AMS 5766

Alloy 800HT