317LMN UNS S31726 317L UNS S31703 stainless steel
Chemical Composition:(WT%)
|
Element
|
Alloy 317L
|
Alloy 317LMN
|
|
Carbon
|
0.03 max
|
0.03 max
|
|
Manganese
|
2.00
|
2.00
|
|
Silicon
|
0.75 max
|
0.75 max
|
|
Chromium
|
18.00-20.00
|
17.00-20.00
|
|
Nickel
|
11.00-15.00
|
13.50-17.50
|
|
Molybdenum
|
3.00-4.00
|
4.00-5.00
|
|
Phosphorus
|
0.04 max
|
0.04 max
|
|
Sulfur
|
0.03 max
|
0.03 max
|
|
Nitrogen
|
0.10 max
|
0.10-0.20
|
|
Iron
|
Balance
|
Balance
|
|
UNS No.
|
S31703
|
S31726
|
AVAILABILITY
Hot-rolled Stainless Steel Plate (Thickness*Width*Length/mm):
Hot-rolled Stainless Steel Plate (Thickness*Width*Length/mm):
|
317LMN
|
317L/SUS317L
|
|
3-6×1250/1500×6000
|
3-6×1250/1500×6000
|
|
8-20×1500/1800×6000
|
8-20×1500/1800×6000
|
|
22-100×1800/2000×6000
|
22-100×1800/2000×6000
|
|
3-6×1250/1500×C
|
3-6×1250/1500×C
|
|
8-14×1500/1800×C
|
8-14×1500/1800×C
|
STANDARDS:
ASTM A240, ASME SA240,
EN10028-7, JIS G 4304, GB/T4237
DESCRIPTION:
Alloys 317LMN and 317L are molybdenum-bearing austenitic stainless steels with greatly increased resistance to chemical attack as compared to the conventional chromium-nickel austenitic stainless steels such as Alloy 304. In addition, 317LMN and 317L alloys offer higher creep, stress-to-rupture, and tensile strengths at elevated temperatures than conventional stainless steels. All are low carbon or "L" grades to provide resistance to sensitization during welding and other thermal processes. The "M" and "N" designations indicate that the compositions contain increased levels of molybdenum and nitrogen respectively. The combination of molybdenum and nitrogen is particularly effective in enhancing resistance to pitting and crevice corrosion, especially in process streams containing acids, chlorides, and sulfur compounds at elevated temperatures. Nitrogen also serves to increase the strength of these alloys. Both alloys are intended for severe service conditions such as flue gas desulfurization (FGD) systems.
Alloys 317LMN and 317L are molybdenum-bearing austenitic stainless steels with greatly increased resistance to chemical attack as compared to the conventional chromium-nickel austenitic stainless steels such as Alloy 304. In addition, 317LMN and 317L alloys offer higher creep, stress-to-rupture, and tensile strengths at elevated temperatures than conventional stainless steels. All are low carbon or "L" grades to provide resistance to sensitization during welding and other thermal processes. The "M" and "N" designations indicate that the compositions contain increased levels of molybdenum and nitrogen respectively. The combination of molybdenum and nitrogen is particularly effective in enhancing resistance to pitting and crevice corrosion, especially in process streams containing acids, chlorides, and sulfur compounds at elevated temperatures. Nitrogen also serves to increase the strength of these alloys. Both alloys are intended for severe service conditions such as flue gas desulfurization (FGD) systems.
DESIGN FEATURES:
• A molybdenum bearing austenitic chromium nickel steel with an alloy content somewhat higher than the 316 grades.
• Superior corrosion resistance in difficult
environments.
• Higher creep, stress-to-rupture and tensile
strengths than other stainless steels.
• Reduced intergranular precipitation of chromium carbides during welding and stress relieving as well as minimized possibility of corrosion failure from intergranular attack due to low carbon content.
• Resistance to pitting and crevice corrosion making 317L a successful life-cost product in a variety of highly corrosive environments.
• A molybdenum bearing austenitic chromium nickel steel with an alloy content somewhat higher than the 316 grades.
• Superior corrosion resistance in difficult
environments.
• Higher creep, stress-to-rupture and tensile
strengths than other stainless steels.
• Reduced intergranular precipitation of chromium carbides during welding and stress relieving as well as minimized possibility of corrosion failure from intergranular attack due to low carbon content.
• Resistance to pitting and crevice corrosion making 317L a successful life-cost product in a variety of highly corrosive environments.
TYPICAL APPLICATIONS:
Flue gas desulfurization scrubber systems
Chemical and petro-chemical processing equipment
Pulp and paper plants
Food processing equipment
Textile equipment
Flue gas desulfurization scrubber systems
Chemical and petro-chemical processing equipment
Pulp and paper plants
Food processing equipment
Textile equipment