SS 317L Flanges.
Forged flanges for pipe joints, equipment nozzles and blanking. Supplied to ASTM A182 F317L.
Quick details
| Material grade | SS 317L (UNS S31703) |
|---|---|
| Standard | ASTM A182 F317L |
| Type | Weld neck, Slip-on, Blind, Socket weld, threaded, lap joint and spectacle blind |
| Size range | 1/2" to 24" to ASME B16.5; 26" to 60" to ASME B16.47 on enquiry |
| Usage / application | Flue-gas desulphurisation systems, Pulp and paper bleach plants, Condensers using brackish water |
| Test certificate | EN 10204 3.1 mill test certificate; 3.2 on request |
| Business type | Stockist and supplier |
| Location | Kumbharwada, Mumbai 400004, Maharashtra |
Also searched as: SS 317L flanges, 317L stainless steel flanges, stainless steel 317L flanges, ASTM A182 F317L flanges, UNS S31703 flanges, 1.4438 flanges
Product information for purchasing teams
SS 317L raises molybdenum to 3 to 4% and nickel to 11 to 15%, giving noticeably better pitting resistance than 316L. It is used where 316L is marginal, such as flue-gas desulphurisation, pulp bleach plants and some acid services.
Exact specification, availability and commercial details are confirmed against your enquiry.
SS 317L Flanges specifications
| Material standard | ASTM A182 F317L |
|---|---|
| Grade | SS 317L, UNS S31703, W.Nr 1.4438 |
| Size range | 1/2" to 24" to ASME B16.5; 26" to 60" to ASME B16.47 on enquiry |
| Pressure class | Class 150, 300, 600, 900, 1500 and 2500; PN ratings to EN 1092-1 |
| Facing | Raised face, flat face, ring-type joint |
| Bore | To match the mating pipe schedule |
| Testing | PMI, hardness, ultrasonic and third-party inspection on request |
| Documents | Mill test certificate to EN 10204 3.1; 3.2 on request |
Equivalent grades
| Grade | UNS | Werkstoff Nr. | EN / BS | JIS |
|---|---|---|---|---|
| SS 317L | S31703 | 1.4438 | X2CrNiMo18-15-4 | SUS 317L |
Chemical composition, %
| Grade | C | Mn | Si | P | S | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|---|
| SS 317L | ≤ 0.030 | ≤ 2.00 | ≤ 0.75 | ≤ 0.045 | ≤ 0.030 | 18.0 – 20.0 | 11.0 – 15.0 | 3.0 – 4.0 | ≤ 0.10 |
Mechanical properties
| Property | Value |
|---|---|
| Tensile strength | ≥ 515 MPa |
| Yield strength (0.2%) | ≥ 205 MPa |
| Elongation | ≥ 40% |
| Hardness | ≤ 217 HB |
Values per ASTM A240, annealed. Confirm against the current edition of the standard and your purchase specification.
Density: 7.98 g/cm³
Types we supply
- Weld neck
- Slip-on
- Blind
- Socket weld, threaded, lap joint and spectacle blind
Applications
- Flue-gas desulphurisation systems
- Pulp and paper bleach plants
- Condensers using brackish water
- Dye and textile chemical handling
Questions buyers ask
Which standard covers SS 317L Flanges?
SS 317L Flanges are supplied to ASTM A182 F317L.
What sizes of SS 317L Flanges does Steel Impex India supply?
Size range: 1/2" to 24" to ASME B16.5; 26" to 60" to ASME B16.47 on enquiry. Pressure class: Class 150, 300, 600, 900, 1500 and 2500; PN ratings to EN 1092-1. Exact availability is confirmed for each enquiry.
Do SS 317L Flanges come with a mill test certificate?
Yes. Material is supplied with a mill test certificate to EN 10204 3.1, traceable to the heat number. Third-party inspection to 3.2 can be arranged on request.
What should I send for a SS 317L Flanges quotation?
Send flange type, size, pressure class, facing, bore schedule, quantity and certificate type.
Where is Steel Impex India located?
Steel Impex India is at 231/235, Sant Sena Maharaja Marg, 2nd Kumbharwada, Mumbai 400004, and supplies across India.