S31254 alloy 254 tubing and pipe / S31254 aleación de 254 tubos y tuberías

Physical Properties of 254 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)
254	S31254	A249, A312	98,000	675	98	45,000	310	45	40	—	96 Rb	28.0	8.5	90

Composition of 254 tubing and pipe

Grade	254
UNS Designation	S32154
Nickel (Ni)	17.5–18.5
Chromium (Cr)	19.5–20.5
Iron (Fe)	Bal.
Molybdenum (Mo)	6.0–6.5
Titanium (Ti) Max.	—
Aluminum (Al) Max.	—
Cobalt (Co) Max.	—
Tungsten (W)	—
Vanadium (V) Max.	—
Copper (Cu) Max.	0.50–1.00
Manganese (Mn) Max.	1.00
Niobium (Nb) plus Tantalum	—
Carbon (C) Max.	0.020
Nitrogen (N) Max.	0.18–0.25
Silicon (Si) Max.	0.80
Sulphur (S) Max.	0.010
Phosphorous (P) Max.	0.030
Other Elements	—

254 Product Range

Alloy	UNS Designation	Werkstoff NR.	Specifications*
254	S31254	1.4547	A/SA249, A269, A270, A/SA312