ASTM A182 S31803 / S32205 Duplex Flanges
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ASTM A182 Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service.
This specification covers forged duplex and stainless steel piping components for use in pressure systems. Included are flanges and similar parts to specified dimensions or to dimensional standards, such as the ASME specifications.
ASTM A182 S31803/S32205 is a specification for forged or rolled alloy steel pipe flanges, fittings, valves, and parts designed for high-temperature service. Here’s a breakdown of the specification:
– ASTM A182: This is the standard specification for forged or rolled alloy steel pipe flanges, fittings, valves, and parts.
– S31803: This is the material grade for a duplex stainless steel alloy, which is a combination of austenitic and ferritic stainless steel. It offers high strength, corrosion resistance, and weldability.
– S32205: This is another material grade for a duplex stainless steel alloy, similar to S31803, but with slightly different chemical composition and properties.
The S31803 and S32205 grades are often used in applications that require high strength, corrosion resistance, and weldability, such as in the chemical, oil and gas, and marine industries.
What is an ASTM A182 S31803/S32205 flange?
A flange is a forged or rolled alloy steel ring that is used to connect pipes, valves, and other equipment in a piping system. ASTM A182 S31803/S32205 flanges are specifically designed for high-temperature service and are made from a duplex stainless steel alloy (a combination of austenitic and ferritic stainless steel).
Material:
– Grade: F51 (UNS S31803/S32205)
– Type: Duplex Stainless Steel, S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61.
– UNS Number: S31803/S32205
Properties:
– High strength and corrosion resistance
– Good weldability and machinability
– Resistant to pitting, crevice corrosion, and stress corrosion cracking
– Can withstand high temperatures (up to 600°F/315°C)
Types of flanges:
– Slip-on flanges (SO)
– Blind flanges (BL)
– Weld neck flanges (WN)
– Socket weld flanges (SW)
– Lap joint flanges (LJ)
– Threaded flanges (THD)
– Ring Type Joint (RTJ)
Applications:
– Chemical processing
– Oil and gas industry
– Marine and offshore
– Power generation
– High-temperature services
Dimensions and sizes:
– ASME B16.5 and B16.47 Series A and B – Pipe Flanges & Flanged Fittings.
Available in various sizes (1/2″ to 24″)
– Thickness: 1/4″ to 2″
– Pressure ratings: 150#, 300#, 600#, 900#, 1500# and 2500#
Additional requirements:
– Material test reports (MTRs) are often required
– Flanges may need to be heat-treated or solution-annealed
– Special coatings or linings may be applied for additional corrosion protection
A182 F51 Duplex Flanges Chemical Property
| C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
|---|---|---|---|---|---|---|---|---|---|
| 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 22.0 – 23.0 | 3.0 – 3.5 | 4.50 – 6.50 | 0.14 – 0.20 | 63.72 min |
A182 F51 Duplex Mechanical Table.
| Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
|---|---|---|---|
| 7.805 | 0.285 | 1420 – 1465 | 2588 – 2669 |
ASTM A182 S31803/S32205 flanges are subject to various tests to ensure they meet the required standards. Here are some common tests:
1. Chemical Analysis: Verifies the chemical composition of the material.
2. Tensile Test: Measures the flange’s tensile strength, yield strength, and elongation.
3. Hardness Test: Measures the flange’s hardness (Rockwell B or Brinell).
4. Impact Test: Measures the flange’s toughness and resistance to impact (Charpy or Drop Weight).
5. Hydrostatic Test: Tests the flange’s ability to withstand high pressure.
6. Non-Destructive Examination (NDE): Includes radiography, ultrasonic, or magnetic particle tests to detect defects.
7. Corrosion Resistance Test: Evaluates the flange’s resistance to corrosion (e.g., pitting, crevice corrosion).
8. Intergranular Corrosion Test: Assesses the flange’s susceptibility to intergranular corrosion.
9. Microstructure Examination: Examines the flange’s microstructure for proper phase balance and grain size.
10. Dimensions and Tolerances: Verifies the flange’s dimensions and tolerances.
Additionally, ASTM A182 S31803/S32205 flanges may undergo:
– Magnetic Particle Inspection (MPI)
– Liquid Penetrant Inspection (LPI)
– Ultrasonic Testing (UT)
– Radiographic Testing (RT)
Key words related to ASTM A182 S31803/S32205 flanges:
1. Duplex Stainless Steel
2. Forged Flanges
3. High-Temperature Service
4. Corrosion Resistance
5. High-Strength
6. Low-Temperature Service
7. Weldability
8. Machinability
9. Pitting Resistance
10. Crevice Corrosion Resistance
11. Stress Corrosion Cracking Resistance
12. Intergranular Corrosion Resistance
13. Microstructure
14. Grain Size
15. Phase Balance
16. Tensile Strength
17. Yield Strength
18. Elongation
19. Hardness
20. Impact Resistance
Additionally, you may also come across the following key words:
1. ASME B16.5
2. ASME B16.47
3. ASTM A182
4. S31803
5. S32205
6. F51
7. UNS S31803
8. UNS S32205
9. Duplex 2205
10. 2205 Duplex Stainless Steel
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Manufacturer of A182 s32205 Slip-on duplex flanges (SORF)
Manufacturer of A182 s32205 Blind duplex flanges (BLRF)
Manufacturer of A182 s32205 Weld neck duplex flanges (WNRF)
Manufacturer of A182 s32205 Socket weld duplex flanges (SWRF)
Manufacturer of A182 s32205 Lap joint duplex flanges (LJRF)
Manufacturer of A182 s32205 Threaded duplex flanges (THD)
Manufacturer of A182 s32205 Ring type joint duplex flange (RTJ)
Manufacturer of A182 s31803 Slip-on flanges (SO)
Manufacturer of A182 s31803 Blind flanges (BL)
Manufacturer of A182 s31803 Weld neck flanges (WN)
Manufacturer of A182 s31803 Socket weld flanges (SW)
Manufacturer of A182 s31803 Lap joint flanges (LJ)
Manufacturer of A182 s31803 Threaded flanges (THD)
Manufacturer of A182 s31803 Ring type joint (RTJ)
Manufacturer of A182 F51 Slip-on flanges (SO)
Manufacturer of A182 F51 Blind flanges (BL)
Manufacturer of A182 F51 Weld neck flanges (WN)
Manufacturer of A182 F51 Socket weld flanges (SW)
Manufacturer of A182 F51 Lap joint flanges (LJ)
Manufacturer of A182 F51 Threaded flanges (THD)
Manufacturer of A182 F51 Ring type joint (RTJ)
Manufacturer of ASME B16.5 duplex Slip-on flanges (SO)
Manufacturer of ASME B16.5 duplex Blind flanges (BL)
Manufacturer of ASME B16.5 duplex Weld neck flanges (WN)
Manufacturer of ASME B16.5 duplex Socket weld flanges (SW)
Manufacturer of ASME B16.5 duplex Lap joint flanges (LJ)
Manufacturer of ASME B16.5 duplex Threaded flanges (THD)
Manufacturer of ASME B16.5 duplex Ring type joint (RTJ)
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