STAVINOX 316Si / 316LSi

316LSi welding wires produce smooth, strong, corrosion-resistant welds on 316 and 316L stainless steel. Used as a 316 stainless steel welding wire, they are common in pipe, plate and structural fabrication where a clean bead and long service life are priorities. Higher silicon improves weld pool flow and toe blending, particularly in fillet welds, so 316LSi welding wire is often selected where joints need both strength and a consistent look.

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Key Features and Benefits of 316LSi Welding Wire

316LSi welding wire products are made to meet the needs of stainless steel welding in demanding industrial environments.

Main features and benefits:

Excellent Weld Bead Appearance Higher silicon makes molten metal more fluid, so the weld pool spreads evenly and settles smoothly. Beads are uniform with clean toe blending, which lowers undercut risk and cuts post-weld finishing and grinding.
Ideal For 316 And 316L Stainless Steels The metallurgical composition is matched to 316 and 316L stainless steels, giving sound fusion, compatible mechanical properties and reliable corrosion performance in fabrication and surfacing.
Strong Corrosion Resistance The deposited weld metal resists moisture, industrial chemicals and corrosive surroundings very well, which suits process plants, marine-influenced areas and chemical handling equipment.
Low Carbon Content A controlled low carbon level reduces the risk of intergranular corrosion, notably in high-temperature or chemically aggressive service, and helps keep the weld joint intact over a long life.
Good Mechanical Strength The weld metal offers dependable tensile strength and ductility to cope with mechanical loads, vibration and the service stresses typical of industrial installations.
Stable Welding Performance The arc is smooth and steady with minimal spatter, helping welders keep control, work more productively and maintain consistent weld quality.

316LSi Welding Wire Specifications

The table below briefly sets out mechanical properties and recommended welding conditions for our 316LSi MIG and TIG filler wires.

Product Name	AWS/SFA	Yield (N/mm²)	Tensile (N/mm²)	Elong. A5 %	Impact ISO-V (J) 20°C	Welding Conditions
STAVINOX MIG 316LSi	ER 316LSi	≥ 350	≥ 510	≥ 30	≥ 80	DC(+)
STAVINOX TIG 316LSi	ER 316LSi	≥ 350	≥ 510	≥ 30	≥ 47	DC(−)

STAVINOX MIG 316LSi - Type of Packing:

SD 300 / BS 300 - 11.34 Kgs/25 Lbs, 15 Kgs/30 Lbs/33 Lbs Layer Wound Plastic/Metallic Spool.
SD 200 - 4.54 Kgs/10 Lbs Layer Wound Plastic Spool.
SD 100 - 0.700 Kgs/0.910/2 Lbs Layer Wound Plastic Spool.
Mig Wire in Drum - In Drums of 100-250 Kgs (200-550 Lbs).

316LSi Properties

Property	Description
Corrosion Resistance	Performs well in chemical and marine environments
Weld Bead Quality	Smooth bead profile with excellent toe blending
Mechanical Strength	Strong, ductile weld metal
Crack Resistance	Lower cracking risk owing to low carbon content
Arc Stability	Steady arc behaviour for controlled welding
Versatility	Works for both MIG and TIG welding processes

Together these properties support consistent results across many stainless steel welding tasks with this 316L wire (316L Si).

316LSi Applications

316LSi welding wires serve industries where stainless steel components have to withstand both corrosion and mechanical stress.

Typical applications:

Pipe and pipeline fabrication
Pressure vessels and storage tanks
Chemical processing equipment
Food and beverage industry installations
Marine and offshore structures
Heat exchangers and industrial machinery
General stainless steel fabrication and repair

The smooth finish of 316LSi welding wire is particularly valuable where appearance and hygiene standards matter.

Frequently Asked Questions

What is 316LSi welding wire?

316LSi (ER316LSi) is a low-carbon 316L stainless steel MIG/TIG filler with extra silicon. The silicon improves weld-pool fluidity and produces smoother, better-wetted beads on 316 and 316L stainless steel.

How is 316LSi different from 316L welding wire?

Both weld 316/316L stainless with the same corrosion resistance and strength. 316LSi has more silicon, which improves weld-pool flow, toe blending and bead appearance, a benefit that shows most in MIG and fillet welds.

Can 316LSi wire be used for both MIG and TIG?

Yes. STAVINOX MIG 316LSi runs on DC+ and STAVINOX TIG 316LSi on DC−, and both are classified AWS ER316LSi.

Which stainless steels can be welded with 316LSi?

316 and 316L austenitic stainless steels, plus other molybdenum-bearing grades that need corrosion resistance.

In what diameters and packs is 316LSi supplied?

STAVINOX MIG 316LSi comes on SD/BS spools and in 100–250 kg drums, while STAVINOX TIG 316LSi is supplied as filler rods.

Which shielding gas goes with 316LSi?

For MIG, use an argon-based mix (often with a small CO₂ or O₂ addition); for TIG, use argon.

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STAVINOX 316Si / 316LSi