Material Grade

SS 317 / 317L

Stainless Steel 317 (UNS S31700) is a molybdenum-bearing austenitic stainless steel with greatly increased resistance to chemical attack as compared to the conventional chromium-nickel austenitic stainless steel pipe such as SS 304 and SS 316L. In addition.SS 317 offers higher creep, stress-to-rupture, and tensile strength at elevated temperatures than conventional stainless steel tubing. SS 317L is a low carbon version of SS 317 grade which provides resistance to sensitization during welding and other thermal processes. Stainless Steel 317L is non-magnetic in the annealed condition but may become slightly magnetic as a result of welding.

Specifications

Stainless Steel SS 317 / 317L
AISI	317 / 317L
UNS	S31700 / S31703
Werkstoff Nr.	1.4449 / 1.4438

Mechanical & Physical Properties

Density	8.0 g/cm3
Melting Point	1454 °C (2650 °F)
Tensile Strength	Psi - 75000 ,MPa - 515
Yield Strength (0.2%Offset)	Psi - 30000 ,MPa - 205
Elongation	35 %

Chemical Composition

	SS 317	SS 317L
Ni	11 - 14	11 - 15
Cr	18 - 20	18 - 20
C	0.08 max	0.035 max
Mo	3 - 4	3 - 4
Fe	Balance
Mn	2 max	2 max
Si	1 max	1 max
S	0.03 max	0.03 max
P	0.040 max	0.040 max