Austenitic SS 317L Round Bar
Alloy 317/317L (UNS S31703) Bars are a molybdenum-bearing austenitic stainless steel with greatly increased resistance to chemical attack as compared to the conventional chromium-nickel austenitic stainless steels such as Alloy 304.
Chemical Properties
|
GRADE |
NI |
CR |
MO |
C |
MN |
P |
S |
Fe |
|
|---|---|---|---|---|---|---|---|---|---|
|
SS 317L |
MIN % |
11 |
18 |
3 |
– |
– |
– |
– |
BALANCE |
|
MAX % |
15 |
20 |
4 |
0.03 |
2 |
0.045 |
0.03 |
||
|
SS 317 |
MIN % |
– |
– |
– |
– |
– |
– |
– |
BALANCE |
|
MAX % |
13 |
19 |
3.5 |
0.08 |
2 |
0.045 |
0.03 |
SS 317/317L grade has improved corrosion resistance over SS 304 Bars and SS 316. Meanwhile, it has some great features like having an excellent Corrosion Resistance, Excellent Strength, Improved General and Localized Corrosion to SS 316.
Properties
Stainless Steel 317/317L Bars or Alloy 317L Round Bar are essentially non-magnetic in the annealed condition and can only be hardened by cold working. 317/317L Stainless Steel Bars have restricted cobalt and tantalum content for nuclear applications.
Mechanical Properties
|
Grade |
Tensile Strength |
Yield Strength |
Elongation |
Reduction of area |
|---|---|---|---|---|
|
[MPA] |
[MPA] |
(% in 50mm) min |
min % |
|
|
SS 317/ 317L |
515 |
205 |
30 |
40 |
SS 317L Round Bar have excellent thermal and electrical conductivity, whereas SS 317/317L also have the best mechanical properties which have good alloy ductility and hardness. The coils of this stainless steel are advantageous which provides the best strength to weight ratio for the structure.
Physical Properties
|
Grade |
Density (g/cm3) |
Elastic Modulus (GPa) |
Mean Co-eff of Thermal Expansion (μm/m/°C) |
Thermal Conductivity (W/m.K) |
|---|---|---|---|---|
|
0-100°C |
at 100°C |
|||
|
SS 317/ 317L |
8 |
193 |
16 |
16.3 |
Specification
The Specification for Wrought Stainless Steel 317L Round Bar as per astm Standard is ASTM A276/ASME SA-276, they are categorised into different form and shape such as SS 317/317L Round Bar, Rod, Channel Bar, T-Bar, Flat Bar, Blocks, Square, bar, Triangle, Threaded, Hex (A/F), Profiles, Half Ingot, Billet, I/H Bar, etc.
When considering wrought Alloy 317L Round Bar, material shall be furnished in the following way such as Hot-worked, Hot-worked and Annealed, Hot-worked- Annealed and cold worked or Hot-worked-Annealed and heat treated.
SS 317L Round Bar depending upon their treatment and their use and application they can also be available in different surface finishes such as Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish, 2B, 2D, etc.
Application
Stainless Steel 317/317L Bars are often used for Oil & petroleum refining equipment, pulp and paper processing equipment, Food processing equipment, Soap and photographic handling equipment, etc. Stainless Steel 317/317L is commonly applied to high temperature equipment, such as gaskets and expansion joints, along with rocket engine and chemical manufacturing.
