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Stainless Steel E317L-16 Welding Electrode Supplier in Mumbai, India
Nicorex Alloys is an ISO 9001 and ISO 14001 certified specialist stockist, supplier, and importer of E317L-16 welding electrodes in Mumbai, India. We keep a ready inventory across standard diameters. We provide E317L-16 welding electrodes as classified under AWS A5.4 E317L-16 / ASME SFA 5.4.
Among austenitic stainless steel SMAW consumables, the E317L-16 welding electrode stands apart for its elevated 3.0–4.0% molybdenum content. That higher Mo content makes it the preferred coated electrode for welding 317L-grade stainless steel in severely corrosive chemical processing environments. This consumable carries the UNS designation W31713 and falls within ASME Section IX groupings F-4 and A-8. The weld deposit is a 19Cr-13Ni-3.5Mo low-carbon austenitic stainless steel with controlled carbon at ≤0.04% to help prevent intergranular corrosion. Typical all-weld-metal mechanical properties include tensile strength of ~92,000 psi (634 MPa), yield strength of ~69,000 psi (476 MPa), and an elongation of 35%. The rutile-coated design (-16 suffix) enables smooth arc transfer on AC or DCEP in all welding positions.
Available diameters for these electrodes are 2.4 mm (3/32″), 3.2 mm (1/8″), 4.0 mm (5/32″), and 4.8 mm (3/16″). Primary base metals include AISI 317, 317L, and overlay cladding of carbon steel. Key industries span chemical processing, petrochemical, pharmaceutical, and pulp & paper. We ship every batch with MTC 3.1 per EN 10204.
E317L-16 Welding Electrode Specifications
| AWS | A5.4 E317L-16 |
|---|---|
| ASME SFA | 5.4 E317L-16 |
| UNS Number | W31713 |
| EN ISO 3581-A | E 19 13 4 L R 1 2 |
| Welding Process | SMAW (Shielded Metal Arc Welding) |
| Polarity | AC or DCEP (DC Electrode Positive) |
| Coating Type | Rutile (Titania) |
| Welding Positions | All positions (F, V, OH, H) |
| Available Diameters | 2.4 mm (3/32″), 3.2 mm (1/8″), 4.0 mm (5/32″), 4.8 mm (3/16″) |
| Electrode Length | 300 mm (12″) for 2.4 mm; 350 mm (14″) for 3.2–4.8 mm |
What Does E317L-16 Mean? – AWS A5.4 Classification Breakdown
Understanding the E317L-16 classification helps welding engineers select the correct consumables and verify WPS compliance.
| Prefix / Suffix | Meaning |
|---|---|
| E | Electrode (flux-coated consumable for SMAW) |
| 317 | Corresponds to AISI 317 stainless steel weld deposit type (19Cr-13Ni-3.5Mo) |
| L | Low carbon (≤0.04% C); limits carbide precipitation and intergranular corrosion risk in the weld deposit |
| -16 | Rutile (titania) coating; suitable for AC or DCEP, all welding positions |
Chemical Composition of E317L-16 Weld Deposit (%)
| Condition | Carbon (C) | Chromium (Cr) | Nickel (Ni) | Molybdenum (Mo) | Manganese (Mn) | Silicon (Si) | Phosphorus (P) | Sulfur (S) | Copper (Cu) |
|---|---|---|---|---|---|---|---|---|---|
| AWS A5.4 Range | 0.04 max | 18.00–21.00 | 12.00–14.00 | 3.00–4.00 | 0.50–2.50 | 1.00 max | 0.04 max | 0.03 max | 0.75 max |
| Typical Value | 0.03 | 19.19 | 13.47 | 3.25 | 1.90 | 0.39 | 0.02 | 0.01 | – |
The 3.0–4.0% Mo is the critical differentiator. It provides roughly 40% more Mo than E316L deposits (2.0–3.0%). This delivers measurably higher pitting resistance in chloride environments and improved dilute sulfuric acid performance. Low carbon (≤0.04%) prevents chromium carbide precipitation. This safeguards against intergranular corrosion.
Note: Values shown are weld deposit composition, not wire/rod analysis. Actual results depend on welding parameters and dilution.
Mechanical Properties of E317L-16 Welding Electrode
| Condition | Tensile Strength | Yield Strength (0.2% Offset) | Elongation (% in 2″) | Charpy V-Notch Impact | Ferrite Content |
|---|---|---|---|---|---|
| AWS A5.4 Minimum | 75,000 psi (520 MPa) | Not specified | 30% | Not required by AWS | Not specified |
| Typical Value | 87,500–92,000 psi (603–634 MPa) | 60,500–69,000 psi (417–476 MPa) | 35–38% | – | FN 3–8 (typical) |
Base Metal Compatibility & ASME P-Number Matrix for E317L-16
| Base Metal | UNS / AISI | ASME P-No. | Joint Type |
|---|---|---|---|
| 317L Stainless | S31703 / AISI 317L | P-8 | Similar (P-8 to P-8) |
| 317 Stainless | S31700 / AISI 317 | P-8 | Similar |
| 316L Stainless | S31603 / AISI 316L | P-8 | Similar (overmatched Mo) |
| 316 Stainless | S31600 / AISI 316 | P-8 | Similar |
| 304L Stainless | S30403 / AISI 304L | P-8 | Similar family |
| Carbon Steel (overlay) | Various | P-1 | Dissimilar (overlay/cladding) |
| Low-Alloy Steel (overlay) | Various | P-3, P-4 | Dissimilar (overlay/cladding) |
For overlay cladding of carbon or low-alloy steel, E317L-16 deposits a corrosion-resistant layer with higher Mo than E316L. For structural dissimilar joints (317L to carbon steel), E309LMo-16 is typically preferred as the transition layer.
Recommended Welding Parameters for E317L-16 Electrode
The following welding parameters are recommended for E317L-16 electrodes on AC or DCEP polarity.
| Diameter | Amperage (Flat) | Amperage (V & OH) | Voltage |
|---|---|---|---|
| 2.4 mm (3/32″) | 70–85 A | 65–75 A | 22–26 V |
| 3.2 mm (1/8″) | 85–110 A | 80–90 A | 23–27 V |
| 4.0 mm (5/32″) | 110–140 A | 100–120 A | 24–28 V |
| 4.8 mm (3/16″) | 120–160 A | 110–130 A | 25–29 V |
Preheat is generally not required. For sections above 25 mm, a mild preheat of 10–15°C above ambient improves weldability. Maximum interpass temperature is 150°C (300°F). Keep heat input between 10–25 kJ/in (0.4–1.0 kJ/mm) and use narrow stringer beads; avoid excessive weaving. Post-weld heat treatment isn’t required. Clean joints using stainless steel wire brushes only.
Get Stainless Steel E317L-16 Welding Electrode at Competitive Prices
Industrial Welding Applications of E317L-16 Stainless Steel Electrode
- Facilities handling sulfuric acid, phosphoric acid, and organic acid solutions. Pipe butt joints, vessel shell-to-nozzle welds, and heat exchanger tubesheet connections fabricated from AISI 317L.
- E317L-16 stick electrode is selected for 317L piping in pharmaceutical reactors and dairy equipment, where aggressive CIP solutions attack standard 316L welds.
- Bleach plant equipment and chlorine dioxide generators. Digester repairs and washer drum fabrication during shutdowns.
- Condenser tubesheet joints, FGD scrubber internals, and cooling water piping.
- Weld overlay cladding of carbon steel and low-alloy steel substrates.
Storage, Handling & Re-Drying of E317L-16 Electrodes
Proper electrode storage directly affects weld quality. Store E317L-16 in original sealed packaging in a clean, dry area at a minimum 5°C above the dew point, with relative humidity below 50%. After opening the canister, transfer electrodes to a holding oven at 100–150°C (212–300°F) to prevent moisture picking.
If moisture is suspected, re-dry at 200–250°C (400–480°F) for 2 hours. Limit ambient exposure to 4 hours after oven removal. A maximum of 3 re-drying cycles applies. Nicorex Alloys supplies E317L-16 in hermetically sealed canisters; vacuum-sealed electrodes don’t require re-drying if packaging is intact. Handle with clean, dry gloves and avoid carbon steel tool contamination.
How to Order E317L-16 Welding Electrode from Nicorex Alloys
- WS Classification: E317L-16 per AWS A5.4 / ASME SFA-5.4
- Diameter: 2.4 mm / 3.2 mm / 4.0 mm / 4.8 mm
- Quantity: Specify kg or number of canisters
- Testing / Certification: MTC 3.1/3.2; FN Report; NACE MR0175; TPI
- Base Metal: UNS S31703 or dissimilar joint — specify
- Material Grade: UNS S31703; W.Nr. 1.4438; EN ISO 3581-A: E 18 15 3 L R
- Third-Party Approvals: DNV / ABS / BV / LR / TÜV — specify
- Applicable Code: ASME VIII, IX, B31.3 — specify
- Delivery: Domestic / International — specify port or address
- Remarks: Confirm low carbon (L grade); suitable for pulp/paper / chemical service
Frequently Asked Questions
What is the Price of E317L-16 Welding Electrode per Kg in India?
What is the Difference Between E317L-16 and E316L-16 Welding Electrodes?
Can E317L-16 Be Used to Weld 316L Stainless Steel?
Yes, E317L-16 can weld AISI 316L stainless steel. Since E317L deposits contain higher Mo than the 316L base metal, the weld joint will have overmatched corrosion resistance, particularly where pitting or crevice corrosion is a concern. Both 316L and 317L fall under ASME P-Number 8, so a WPS qualified for P-8 to P-8 covers this combination.