ASTM A182 F317 Stainless Steel Blind Flange
What is ASTM A182 F317 Stainless Steel Blind Flange
ASTM A182 F317 is a high-performance stainless steel alloy primarily used in flange production due to its excellent resistance to corrosion and high-temperature environments. The blind flange is a flange without a bore, designed to close off the ends of piping systems, valves, or pressure vessel openings.
Key Features of ASTM A182 F317 Stainless Steel
-
Material Composition:
- ASTM A182 F317 is an austenitic stainless steel with a high chromium (Cr) and nickel (Ni) content, along with molybdenum (Mo). These elements enhance its corrosion resistance, especially against chlorides and reducing agents.
- It contains approximately 18-20% chromium, 11-15% nickel, and 3-4% molybdenum.
-
Corrosion Resistance:
- Exceptional resistance to pitting and crevice corrosion, especially in environments with high chloride concentrations.
- Superior to 304 and 316 stainless steels in terms of resistance to chemical attacks.
-
High-Temperature Performance:
- Excellent performance in high-temperature applications.
- Resistant to scaling and oxidation at elevated temperatures.
-
Mechanical Properties:
- High tensile strength and yield strength.
- Durable and resistant to cracking under stress and pressure.
-
Weldability and Formability:
- Good weldability and formability due to its austenitic structure, making it suitable for manufacturing various flange types.
Specification:
| Standard | ASTM A182/ASME SA182 |
| Material | F317/317L; 1.4449/1.4438 |
| Type | Blind Flange |
| Flange Face | Raised Face/Flat Face/Ring Joint |
| Size | 1/2"-48"(DN15-DN1200) or custom size |
| Thickness | SCH10S-XXS |
| Packing | Plywood case/Pallet |
| Mill Test Certificate | EN10204 3.1/EN10204 3.2 |
Chemical Composition:
|
Grade |
C |
Mn |
P |
S |
Si |
Ni |
Cr |
Mo |
|
F317 |
0.08 max |
2.00 max |
0.045 max |
0.03 max |
1.00 max |
11.0-15.0 |
18.0-20.0 |
3.0-4.0 |
|
F317L |
0.03 max |
2.00 max |
0.045 max |
0.03 max |
1.00 max |
11.0-15.0 |
18.0-20.0 |
3.0-4.0 |
Mechanical Properties:
|
Grade |
Tensile Strength |
Yield Strength min, ksi [MPa] |
Elongation in 2 in. |
Reduction of |
|
F317 |
75 [515] |
30 [205] |
30 |
50 |
|
F317L |
70 [485] |
25 [170] |
30 |
50 |
Application:
- Oil and Gas Industry: Used in pipelines to block flow or isolate sections.
- Chemical Processing Plants: Ideal for handling corrosive chemicals and high-pressure systems.
- Marine and Offshore Environments: Highly resistant to saltwater corrosion.
- Power Generation: Used in high-temperature and high-pressure steam systems.
- Pharmaceutical and Food Processing: Ensures hygiene and resists contamination due to its non-reactive surface.
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