QuCu84 TIG Welding Wire – Silicon Bronze CuSi2 / ERCuSi-A (2.1522)

QuCu84 is the ductile silicon bronze: EN ISO 24373 S/G Cu 6511 (CuSi2Mn1) · AWS A5.7 ERCuSi-A · material no. 2.1522. With 1.8 % silicon it is softer than QuCu82 (62 HB) — in return it offers 45 % elongation, the highest figure in quada's entire copper range.That makes it the choice when the seam has to yield: on thin sheet, on low-zinc brasses (CuZn5, CuZn10, CuZn15) and on build-ups that are later formed or heavily loaded. Also suitable for build-ups on unalloyed steel and cast iron.Recommended base materialsCopper and low-alloy copper alloysCuZn5, CuZn10, CuZn15 (brass)Silicon bronzesBuild-up welding on unalloyed and low-alloy steel, cast ironTypical applicationsJoint welding on copper and brassBuild-up welds requiring high formabilityThin sheet and components with stress in the seamBuild-ups on steel and cast ironProperties and advantagesA 45 % elongation — the most ductile copper filler in quada's range62 HB, Re 285 MPa · Rm 530 MPaSofter and tougher than QuCu82 (Si 3 %)Also usable on steel and cast ironBobbin form: K125, K250, K80, MA125, SH253 — wire weight 100 g–500 g, Ø 0,3 mm – 0,8 mm. Material analysis (wt.-%)Si 1.80 | Mn 1.00 | Sn 0.20 | P 0.01 | Cu balance

QuCu84 is the ductile silicon bronze: EN ISO 24373 S/G Cu 6511 (CuSi2Mn1) · AWS A5.7 ERCuSi-A · material no. 2.1522. With 1.8 % silicon it is softer than QuCu82 (62 HB) — in return it offers 45 % elongation, the highest figure in quada's entire copper range.That makes it the choice when the seam has to yield: on thin sheet, on low-zinc brasses (CuZn5, CuZn10, CuZn15) and on build-ups that are later formed or heavily loaded. Also suitable for build-ups on unalloyed steel and cast iron.Recommended base materialsCopper and low-alloy copper alloysCuZn5, CuZn10, CuZn15 (brass)Silicon bronzesBuild-up welding on unalloyed and low-alloy steel, cast ironTypical applicationsJoint welding on copper and brassBuild-up welds requiring high formabilityThin sheet and components with stress in the seamBuild-ups on steel and cast ironProperties and advantagesA 45 % elongation — the most ductile copper filler in quada's range62 HB, Re 285 MPa · Rm 530 MPaSofter and tougher than QuCu82 (Si 3 %)Also usable on steel and cast ironRod form advantage: Constant wire feed for manual joint welding.Rod form: Rod lengths 1000 mm and 333 mm, Ø 0,3 mm – 0,8 mm. Material analysis (wt.-%)Si 1.80 | Mn 1.00 | Sn 0.20 | P 0.01 | Cu balance

QuCu82 is the silicon bronze: EN ISO 24373 S Cu 6560 (CuSi3Mn1) · AWS A5.7 ERCuSi-A · material no. 2.1461. With 3 % silicon it is the stronger of quada's two silicon bronzes (80 HB, Rm 390 MPa).Silicon makes the weld pool more fluid and deoxidising — which is why these wires are the easiest entry into copper welding. They join copper, low-alloy copper alloys, brass (CuZn) and silicon bronzes, and can also be used for build-ups on steel and cast iron. Where more ductility is needed, use QuCu84 (Si 1.8 %, A 45 %).Recommended base materialsCopper and low-alloy copper alloysCopper-zinc alloys (brass)Silicon bronzesBuild-ups on unalloyed and low-alloy steels and cast ironTypical applicationsJoint welding on copper and brassBuild-up welding on steel and cast ironRepairs on silicon bronze componentsArt casting and restorationProperties and advantagesSi 3 % — fluid, deoxidising weld metal80 HB, Re 150 MPa · Rm 390 MPa · A 40 %Stronger than QuCu84 (62 HB)Also usable on steel and cast ironTIG advantage: For larger seams and build-up areas. Ø 1.0–1.6 mm.TIG form: for manual repair welding. Material analysis (wt.-%)Si 3.0 | Mn 1.00 | Sn 0.10 | Zn 0.10 | Fe 0.07 | Cu balance

QuCu82 is the silicon bronze: EN ISO 24373 S Cu 6560 (CuSi3Mn1) · AWS A5.7 ERCuSi-A · material no. 2.1461. With 3 % silicon it is the stronger of quada's two silicon bronzes (80 HB, Rm 390 MPa).Silicon makes the weld pool more fluid and deoxidising — which is why these wires are the easiest entry into copper welding. They join copper, low-alloy copper alloys, brass (CuZn) and silicon bronzes, and can also be used for build-ups on steel and cast iron. Where more ductility is needed, use QuCu84 (Si 1.8 %, A 45 %).Recommended base materialsCopper and low-alloy copper alloysCopper-zinc alloys (brass)Silicon bronzesBuild-ups on unalloyed and low-alloy steels and cast ironTypical applicationsJoint welding on copper and brassBuild-up welding on steel and cast ironRepairs on silicon bronze componentsArt casting and restorationProperties and advantagesSi 3 % — fluid, deoxidising weld metal80 HB, Re 150 MPa · Rm 390 MPa · A 40 %Stronger than QuCu84 (62 HB)Also usable on steel and cast ironBobbin form: K125, K250, K80, MA125, SH253 — wire weight 100 g–500 g, Ø 0,3 mm – 0,8 mm. Material analysis (wt.-%)Si 3.0 | Mn 1.00 | Sn 0.10 | Zn 0.10 | Fe 0.07 | Cu balance

QuCu82 is the silicon bronze: EN ISO 24373 S Cu 6560 (CuSi3Mn1) · AWS A5.7 ERCuSi-A · material no. 2.1461. With 3 % silicon it is the stronger of quada's two silicon bronzes (80 HB, Rm 390 MPa).Silicon makes the weld pool more fluid and deoxidising — which is why these wires are the easiest entry into copper welding. They join copper, low-alloy copper alloys, brass (CuZn) and silicon bronzes, and can also be used for build-ups on steel and cast iron. Where more ductility is needed, use QuCu84 (Si 1.8 %, A 45 %).Recommended base materialsCopper and low-alloy copper alloysCopper-zinc alloys (brass)Silicon bronzesBuild-ups on unalloyed and low-alloy steels and cast ironTypical applicationsJoint welding on copper and brassBuild-up welding on steel and cast ironRepairs on silicon bronze componentsArt casting and restorationProperties and advantagesSi 3 % — fluid, deoxidising weld metal80 HB, Re 150 MPa · Rm 390 MPa · A 40 %Stronger than QuCu84 (62 HB)Also usable on steel and cast ironRod form advantage: Constant wire feed for manual repair welding.Rod form: Rod lengths 1000 mm and 333 mm, Ø 0,3 mm – 0,8 mm. Material analysis (wt.-%)Si 3.0 | Mn 1.00 | Sn 0.10 | Zn 0.10 | Fe 0.07 | Cu balance

Qu17-4PH is a precipitation-hardening, corrosion-resistant laser welding wire of the alloy 17-4PH (material 1.4542 / X5CrNiCuNb16-4, AISI 630). This martensitic chromium-nickel-copper steel combines high strength with good corrosion resistance — ideal for repair and build-up welding in tool and mould making as well as on pump, valve and shaft components.Recommended base materials1.4542 — X5CrNiCuNb16-4 / 17-4PH / AISI 630 (primary material)1.4540 — X4CrNiCuNb16-4 (identical-type variant)1.4548 — X5CrNiCuNb17-4 (identical-type variant)Typical applicationsTool and mould making — repair and build-up weldingPump, valve and fitting componentsShafts, axles and highly stressed machine partsOffshore, chemical and food technologyAerospace componentsProperties and advantagesPrecipitation-hardening (Cu/Nb) — high strength through ageing (heat-treatment conditions H900/H1025/H1150)Achievable hardness 37–40 HRC per manufacturer datasheetGood corrosion resistance at high mechanical load capacityIdentical-type weld metal for durable, low-crack jointsShielding gas: argon 4.6 or better; adapt heat control to the aged condition of the componentTIG advantage: For manual repair welding on moulds, tools and functional surfaces with precise heat input.TIG form: for manual repair welding. Material analysis (wt.-%)Cr 15.0–17.5 | Ni 3.0–5.0 | Cu 3.0–5.0 | Nb 0.15–0.45 | Mn ≤1.0 | Si ≤1.0 | C ≤0.07 | Fe balance

QuNi24 is a corrosion- and heat-resistant laser welding wire of the nickel-base superalloy Inconel 625 (base material 2.4856 / Alloy 625, UNS N06625; filler metal 2.4831 / ERNiCrMo-3 / EN ISO 18274 S Ni 6625). This NiCrMo alloy combines high resistance to pitting and crevice corrosion with elevated-temperature strength up to around 1100 °C and cryogenic toughness down to −196 °C — ideal for the chemical process industry, offshore, exhaust systems and aerospace.Recommended base materials2.4856 — Inconel 625 / Alloy 625 / NiCr22Mo9Nb (primary material)2.4858 — Incoloy 825 (related NiFeCr alloy)1.4529, 1.4539, 1.4876 — high-alloy special stainless steelsJoining ferritic↔austenitic steels, build-up welding on steelTypical applicationsChemical process industry — acid- and media-resistant componentsOffshore and seawater engineeringExhaust and flue-gas systems, hot components up to ~1100 °CAerospaceJoining ferritic↔austenitic steels, build-up welding on steelProperties and advantagesOutstanding resistance to pitting and crevice corrosionHeat-resistant up to ~1100 °C and tough down to −196 °C; favourable creep valuesStress- and hot-crack safety, high fatigue strength (Mo/Nb in NiCr matrix)All-weld metal: Re 500 N/mm², Rm 760 N/mm², A 35 %; filler metal ERNiCrMo-3Good weldability with low heat input; shielding gas argon 4.6 or betterTIG advantage: For manual repair and joining welds on chemical, offshore and exhaust components with precise heat input.TIG form: for manual repair welding. Material analysis (wt.-%)Ni balance | Cr 22.0 | Mo 9.0 | Nb 3.5 | Fe 1.0 | Si 0.25 | Mn 0.20 | C ≤0.03