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ER310Mod / ER310MoL Welding Wire Supplier in Mumbai, India
Nicorex Alloys is an ISO 9001 and ISO 14001 certified Mumbai-based supplier and stockist of ER310Mod (also sold under the designation ER310MoL) welding wire. We provide these wires manufactured in accordance with AWS A5.9 and EN 12072.
ER310Mod/ ER310MoL’s nominal chemistry, which is ~25% Cr, ~21% Ni, and ~0.13% C, produces a fully austenitic weld deposit with zero ferrite. The higher silicon content (0.50–0.65%) sets this modified variant apart by giving the weld pool better fluidity and cleaner slag release when joining heat-resistant cast steels. The wire carries UNS S31080 and W.Nr. 1.4842 designations. Standard austenitic filler metals break down fast when service hits 900°C and above. That is why heat-resistant steel fabricators turn to ER310Mod welding wire; the go-to 25Cr-20Ni filler metal built for joining and surfacing components that run at temperatures up to 1150°C (2100°F) in air. ER310Mod handles base metals such as 1.4841, 1.4845, and 1.4828 wrought grades, plus cast steel grades like GX40CrNiSi25-12 and ASTM A297 HF/HH/HK. It also works as a tough buffer layer beneath cap passes on chromium steel joints in sulphurous gas environments.
The wire ships as TIG rods (1.6–4.0 mm) and MIG spools (0.8–1.6 mm), supports all welding positions, and runs on DCEN (TIG) or DCEP (MIG) with 100% Argon or Ar+2%O₂ shielding. Scaling resistance reaches 1050°C in oxidising sulphurous atmospheres and 650°C in reducing sulphurous atmospheres. Every spool ships with EN 10204/3.1 mill test certificates.
ER310Mod Welding Wire Specifications
| AWS Classification | ER310 (Modified) |
|---|---|
| UNS Designation | S31080 |
| Applicable Standards | AWS A5.9, EN 12072 |
| Welding Processes | GTAW (TIG), GMAW (MIG), SAW |
| Polarity | (GTAW): DCEN (GMAW): DCEP |
| Positions | All (F, V, H, OH) |
| TIG Rod Diameters | 1.6, 2.0, 2.4, 3.2, 4.0 mm |
| MIG Wire Diameters | 0.8, 1.0, 1.2, 1.6 mm |
| Shielding Gas | (GTAW): 100% Ar (MIG): Ar + 2% O₂ or Ar + 2% CO₂ |
Understanding the ER310MoL AWS Classification
| Designation | Meaning |
|---|---|
| ER | Electrode / Rod |
| 310 | 25Cr–20Ni austenitic stainless steel composition |
| Mod | Supplier-specific modification indicating silicon optimisation (higher Si for better weld pool control) |
| Mo | Molybdenum ≤ 1.0% |
| L | Low Carbon < 0.03% |
Weld Deposit Chemical Composition of ER310Mod
| Specification | Carbon (C) | Silicon (Si) | Manganese (Mn) | Chromium (Cr) | Nickel (Ni) | Molybdenum (Mo) | Copper (Cu) | Phosphorus (P) | Sulphur (S) |
|---|---|---|---|---|---|---|---|---|---|
| AWS A5.9 ER310 (%) | 0.08–0.15 | 0.30–0.65 | 1.0–2.5 | 25.0–28.0 | 20.0–22.5 | 0.75 max | 0.75 max | 0.03 max | 0.03 max |
| Typical ER310Mod (%) | 0.10–0.13 | 0.50–0.65 (modified upper range) | 1.5–1.7 | 25.5–26.5 | 20.5–21.0 | <0.50 | <0.50 | 0.012 | 0.010 |
All-Weld-Metal Mechanical Properties of ER310Mod
| Specification | Tensile Strength | Yield Strength (0.2%) | Elongation | Impact Toughness |
|---|---|---|---|---|
| Typical Value | 617 MPa (89,500 psi) | 417 MPa (60,500 psi) | 41% | Good at room temperature |
Get ER310Mod / ER310MoL Welding Wire at Competitive Prices
Industrial Welding Applications of ER310Mod
- Thermal Processing & Furnace Equipment: Radiant tubes, furnace muffles, kiln rollers, retorts, and heat treatment baskets.
- Petrochemical & Refining: Cracking furnace tube joints, reformer outlet welds, and catalyst support frames.
- Cement & Lime Processing: Kiln shell repair welds, preheater cyclone patches, and clinker cooler grate.
Available Forms & Packaging
The table below outlines available ER310Mod supply forms, including diameter ranges and standard packaging options used across different welding processes:
| Form | Diameter | Packaging |
|---|---|---|
| TIG Rods | 1.6, 2.0, 2.4, 3.2, 4.0 mm | 1000 mm straight lengths |
| MIG Wire | 0.8–1.6 mm | D200 and B300 bobbins |
| SAW Wire | — | Drums |
ER310Mod comes in several forms for TIG, MIG, and SAW welding. All types are hermetically sealed to keep out moisture, helping maintain weld quality, steady arc performance, and a lower risk of hydrogen-related defects during storage and use.
How to Order ER310Mod Welding Wire from Nicorex Alloys
- Wire Type: GTAW (TIG) Cut Lengths / GMAW (MIG) Spools for High-Temperature & Dissimilar Steel Welding
- Grade: Specify exact variant: ER310Mod / ER310MoL
- Size: 0.9mm / 1.2mm (GMAW) / 1.6mm / 2.4mm / 3.2mm (GTAW)
- Current Type: DCEN (GTAW) / DCEP (GMAW)
- Material Grade: Austenitic Stainless Steel Welding Wire / UNS S31080 / AWS A5.9: ER310Mod / ER310MoL / W.Nr. 1.4842 ISO
- Quantity: Number of spools/packs or total weight in kg
- Standard: AWS A5.9 / ASME SFA 5.9, EN ISO 14343-A: W 25 20, ASME Section IX
- Documentation: MTC 3.1/3.2, PMI Report, Weld Metal Composition Report, TPI Certificate
- Delivery: Domestic