QuNi76 Rod – Laser Welding Wire Hastelloy C276 / 2.4819 (Alloy C-276 / UNS N10276)

QuNi76 is a highly corrosion-resistant laser welding wire of the nickel-base alloy Hastelloy C276 (base material 2.4819 / NiMo16Cr15W, Alloy C-276, UNS N10276). As a filler metal it corresponds to 2.4886 (DIN EN ISO 18274 S Ni 6276, AWS A5.14 ERNiCrMo-4). Its high molybdenum content of 16 % makes it resistant to a wide range of corrosion in oxidising and reducing media alike — particularly against acids.

Recommended base materials

• 2.4819 — Hastelloy C276 / NiMo16Cr15W / Alloy C-276 / UNS N10276 (primary material)
• Ni-Mo-Cr-W alloys (similar and related)
• Joints with unalloyed, low-alloy and high-alloy steel as well as cast steel

Typical applications

• Chemical process industry — acids, oxidising and reducing media
• Dissimilar nickel-steel joints — joining welds with unalloyed, low-alloy and high-alloy steel/cast steel
• Buffer layers ahead of dissimilar build-up welds
• Plant, apparatus and vessel construction
• Environmental engineering and flue-gas cleaning

Properties and advantages

• Resistant in oxidising and reducing media alike
• Good resistance to acids (16 % molybdenum content)
• High resistance to pitting, crevice and stress corrosion cracking
• Proven for dissimilar joints between nickel alloy and steel
• Mechanical properties (pure weld metal, 20 °C): Re 470 MPa | Rm 780 MPa | A 35 %

Rod form advantage: Ideal for manual repair and joining welds with constant wire feed — also for hard-to-reach areas in chemical and apparatus components. Available in 333 mm and 1,000 mm, special lengths on request.

Rod form: Rod lengths 1000 mm and 333 mm, Ø 0,4 mm – 0,6 mm.

Material analysis (wt.-%)
Ni balance | Mo 16.0 | Cr 15.5 | Fe 6.0 | W 3.5 | Mn 0.90 | V 0.30 | Si 0.07 | P 0.020 | S 0.015 | C 0.010