Can used 310S filler wire for welding of SS 304L & 310s？
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When it comes to high-temperature and corrosion-resistant applications, selecting the right welding filler material is critical. Many engineers and procurement specialists often ask: "Can 310S filler wire be used for welding SS 304L & 310S?" The answer is yes-but understanding the compatibility, performance, and application scenarios is key to achieving optimal results.
Recommended Welding Combinations
| Base Material | Recommended Filler Wire | Welding Method | Notes |
|---|---|---|---|
| SS 304L | 310S | TIG / MIG / SMAW | Ensures high-temperature strength; may slightly increase Ni content in weld metal. |
| SS 310S | 310S | TIG / MIG / SMAW | Matches base metal composition; ensures maximum oxidation and creep resistance. |
| SS 304 | 310S | TIG / MIG | Not recommended for structural parts under high-temperature service without post-weld treatment. |
Key Tip: Using 310S filler wire with 304L base metal increases high-temperature creep strength but may slightly reduce corrosion resistance compared to pure 304L welds. For applications requiring maximum oxidation resistance, post-weld annealing is recommended.
310S Stainless Steel Filler Wire Specification
| Item | Specification |
|---|---|
| Material | 310S / EN 1.4845 Stainless Steel Filler Wire |
| Diameter | 1.2 mm, 1.6 mm, 2.0 mm (customizable) |
| Standard | AWS A5.9, EN ISO 14343 |
| Form | Solid Wire / Flux Cored Wire |
| Melting Point | 1400 – 1450 °C |
| Typical Applications | Welding SS 304L, SS 310S, heat-resistant alloys, boiler components, furnace parts |
| Packaging | Spools 5 kg, 15 kg, 20 kg (customizable) |
| Certificates | ISO 9001, SGS, BV |
Can 310S filler wire weld SS 304L safely?
Yes, it can. 310S filler wire provides high-temperature strength and is widely used for welding SS 304L components exposed to heat above 400°C.
Is 310S filler wire compatible with all stainless steels?
No, it is mainly suitable for austenitic steels like 304L and 310S. Using it with ferritic or martensitic steels may cause cracking.
What welding methods are suitable for 310S filler wire?
TIG, MIG, and SMAW are all commonly used. TIG provides the best control for high-quality, precise welds.
Does 310S filler wire require preheating?
For thin sections, preheating is generally not required. For thick sections or high-temperature service parts, preheating and post-weld annealing improve performance.
310S filler wire price per kg
Due to increasing demand in furnace parts, petrochemical plants, and high-temperature industrial pipelines, the price of 310S filler wire is trending upward:
1.2 mm TIG Wire: $20–$25 per kg
1.6 mm MIG Wire: $18–$24 per kg
Bulk orders may receive volume discounts
Urgency Note: Supply shortages and high industrial demand make timely procurement essential. Early orders help secure both price stability and fast delivery.
In addition to 310S stainless steel welding wire, GNEE has a large inventory of popular 310S stainless steel products for your selection. These can be processed into various practical product forms, including plates, coils, pipes, bars, and wires. If you are interested in 310S stainless steel or other products, please feel free to email us at info@gneestainless.com. We are happy to assist you.
