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QuMed4430 Rod – Stainless Laser Welding Wire 1.4430 / ER316LSi (19 12 3 L Si)

QuMed4430 Rod – Stainless Laser Welding Wire 1.4430 / ER316LSi (19 12 3 L Si)

QuMed4430 is the molybdenum-alloyed austenite: EN ISO 14343-A G/W 19 12 3 L Si · AWS SFA-5.9 ER316LSi (filler material no.: 1.4430). Compared with the 18/8 standard it adds 2.6 % molybdenum — and that shifts the corrosion resistance exactly where chromium alone is no longer enough: into chloride-bearing media.

Molybdenum inhibits pitting. That is why QuMed4430 is the wire for apparatus in the chemical and food industries. Service range −196 °C to 400 °C, low carbon (C 0.02 %) and therefore resistant to intercrystalline corrosion.

Recommended base materials

  • 1.4401, 1.4404 — the CrNiMo standard steels (316 / 316L)
  • 1.4571 — titanium-stabilised (316Ti)
  • 1.4580, 1.4583 — niobium-stabilised variants

Typical applications

  • Apparatus and components in the chemical industry
  • Food industry — vessels, lines, fittings
  • Textile and fuel industries
  • Corrosion-resistant build-up welding
  • Joints on stainless and heat-resistant steels

Properties and advantages

  • 2.6 % molybdenum — considerably higher pitting resistance than the 18/8 standard
  • Low carbon (C 0.02 %) and therefore resistant to IC
  • Service range −196 °C to 400 °C
  • Weld metal: Re 430 MPa · Rm 650 MPa · A 32 %

Rod form advantage: Ideal for manual build-up welding with constant wire feed — also in hard-to-reach areas.

Rod form: Rod lengths 1000 mm and 333 mm, Ø 0,2 mm – 0,8 mm.

Material analysis (wt.-%)
C 0.02 | Si 0.85 | Mn 1.8 | Cr 18.5 | Ni 12.5 | Mo 2.6 | Fe balance

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Diameter: 0,2 mm, 0,3 mm, 0,4 mm, 0,5 mm, 0,6 mm, 0,8 mm
Recommendations for basis material: 1.4401, 1.4404, 1.4571, 1.4580, 1.4583
Rod length: 333 mm, 1000 mm
Wire: Dental & medical wire, Laser welding wire
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