Physical Properties of Super Austenitic 825 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 inches (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)
825	N08825	B704, B705	85,000	586	85	35,000	240	35	30	—	—	28.0	7.7	77

Composition of Super Austenitic 825 tubing and pipe

Grade	825
UNS Designation	N08825
Nickel (Ni)	38.0–46.0
Chromium (Cr)	19.5–23.5
Iron (Fe)	22.0 Min.
Molybdenum (Mo)	2.5–3.5
Titanium (Ti) Max.	0.6–1.2
Aluminum (Al) Max.	0.2
Cobalt (Co) Max.	—
Tungsten (W)	—
Vanadium (V) Max.	—
Copper (Cu) Max.	1.5–3.0
Manganese (Mn) Max.	1.0
Niobium (Nb) plus Tantalum	—
Carbon (C) Max.	0.05
Nitrogen (N) Max.	—
Silicon (Si) Max.	0.5
Sulphur (S) Max.	0.03
Phosphorous (P) Max.	—
Other Elements	—

Super Austenitic 825 Product Range

Alloy	UNS Designation	Werkstoff NR.	Specifications*
825	N08825	2.4858	B/SB704, B/SB705