Physical Properties of Super Austenitic 800/800H Alloys in the Annealed Condition at -20°F to +100°F

			Tensile Strength			Yield Strength
Alloy	UNS Designation	Spec.	psi	MPa	ksi	psi	MPa	ksi	Elongation in 2 in. (min.) %	Grain Size Req.	Max. Hardness	Modulus of Elasticity (x106psi)	Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6)	Thermal Conductivity (BTU-in/ ft2-h-°F)
800	N08800	B514, B515	75,000	520	75	30,000	205	30	30	—	—	—	7.9	80
800H	N08810	B514, B515	65,000	450	65	25,000	170	25	30	5 & coarser	—	—	7.9	80

Composition of Super Austenitic 800/800H tubing and pipe

Grade	800	800H
UNS Designation	N08800	N08810
Nickel (Ni)	30.0–35.0	30.0–35.0
Chromium (Cr)	19.0–23.0	19.0–23.0
Iron (Fe)	39.5 Min.	39.5 Min.
Molybdenum (Mo)	—	—
Titanium (Ti) Max.	0.15–0.60	0.15–0.60
Aluminum (Al) Max.	0.15–0.60	0.15–0.60
Cobalt (Co) Max.	—	—
Tungsten (W)	—	—
Vanadium (V) Max.	—	—
Copper (Cu) Max.	0.75	0.75
Manganese (Mn) Max.	1.5	1.5
Niobium (Nb) plus Tantalum	—	—
Carbon (C) Max.	0.10	0.05–0.10
Nitrogen (N) Max.	—	—
Silicon (Si) Max.	1.00	1.00
Sulphur (S) Max.	0.015	0.015
Phosphorous (P) Max.	—	—
Other Elements	—	—

Super Austenitic 800/800H Product Range

Alloy	UNS Designation	Werkstoff NR.	Specifications*
800	N08800	1.4876	B/SB515, B/SB514
800H	N08810	1.4876	B/SB515, B/SB514