Similar in composition to 316L and 304L, alloy 317L is an austenitic molybdenum, chromium, nickel stainless alloy. 317L has higher creep, stress to rupture, and tensile strength than its 316L and 304L counterparts and due to the higher moly content, 317L provides enhanced resistance to pitting and stress corrosion cracking particularly in chloride or halide rich environments. This is a great solution to demanding applications such as those that can be found offshore and in chemical processing plants.
UNS S31703 CHEMICAL COMPOSITION % (MAX.) | |||||||
C Carbon | Ma Manganese | P Phosphorous | S Sulfur | Si Silicon | Ni Nickel | Cr Chromium | Mo Molybdenum |
≤.030 | 2.00 | ≤.030 | 0.030 | .75 | 11.0-15.0 | 18.0-20.0 | 3.0-4.0 |
DIMENSIONAL TOLERANCES | |||
OUTSIDE DIAMETER (OD) | OD TOLERANCE | WALL TOLERANCE | |
Up to .5” | +/- .005” | +/- 15% | |
.5” – 1.5” excl | +/- .005” | +/- 10% | |
FABRICATION | |||
The low carbon content provides resistance to intergranular corrosion and superior weldability over 316. 317L can be hardened by cold working as opposed to heat treating. | |||
TYPICAL APPLICATIONS Offshore Oil and Gas, Chemical and Petro-Chemical, Pulp & Paper, Food Processing,Textile Equipment |
SIZE RANGE | |
Outside Diameter (OD) | Wall Thickness |
1/8” – 1” | .028” – .120” |
MECHANICAL PROPERTIES | |
YIELD STRENGTH | 30 KSI min. |
TENSILE STRENGTH | 75 KSI min. |
ELONGATION (MINIMUM 2 INCHES) | 35% |