QuMed4551 Bobbin – Stainless Steel Laser Welding Wire 1.4550 / 1.4551 (X6CrNiNb18-10 / AISI 347)

QuMed4551 is a niobium-stabilized stainless steel laser welding wire for heat-resistant apparatus and plant construction. The material 1.4550 / 1.4551 (X6CrNiNb18-10 / AISI 347) combines the corrosion resistance of the CrNi austenites with reliable protection against intergranular corrosion through niobium stabilization — even in the sensitization range after welding, without solution annealing.Recommended base materials1.4550 — X6CrNiNb18-10 (primary material)1.4551 — X6CrNiNb18-10 / AISI 347 (primary material)1.4541 — X6CrNiTi18-10 / AISI 321 (Ti-stabilized, closely related)1.4301, 1.4306 — austenitic CrNi standard gradesTypical applicationsApparatus, vessel and plant construction (chemical, petrochemical)Heating, furnace and heat exchanger constructionExhaust systems and high-temperature componentsComponents under thermal cyclic loadRepair welding on similar stainless steelsAdvantages of 1.4550 / 1.4551Niobium stabilization prevents intergranular corrosion at weld seamsContinuous service temperature up to approx. 800 °CWeldable without subsequent solution annealingHighly cold-formable, excellent work-hardening behaviorRod form advantage: Ideal for manual build-up welding with constant wire feed — also for repair sites that are hard to access on heat-resistant components.Rod form: Rod lengths 1000 mm and 333 mm, Ø 0,2 mm – 0,8 mm. Material analysis (wt.-%)C ≤ 0.08 | Si ≤ 1.0 | Mn ≤ 2.0 | Cr 17.0–19.0 | Ni 9.0–12.0 | Nb 10×C up to 1.0 | Fe balance

QuFe55 is suitable for corrosion resistant joining and building-up welds on same or similar stainless heat-resistant steels as well as austenite CrNi steels / cast steels. Stainless. IK resistant (wet corrosion up to 400°C). The worked-on material is used for parts or equipment in the medical branch, the food industry, the oil, soap, synthetic fibres, film and photo industry.Material analysis C: ≤0,06 | Si: 0,90 | Mn: 1,3 | Cr: 20,0 | Ni: 9,5 | Nb: 12xC

QuFe55 is suitable for corrosion resistant joining and building-up welds on same or similar stainless heat-resistant steels as well as austenite CrNi steels / cast steels. Stainless. IK resistant (wet corrosion up to 400°C). The worked-on material is used for parts or equipment in the medical branch, the food industry, the oil, soap, synthetic fibres, film and photo industry.Material analysis C: ≤0,06 | Si: 0,90 | Mn: 1,3 | Cr: 20,0 | Ni: 9,5 | Nb: 12xC

QuMed4316 is used for non-corroding joint and build-up weldings of similar low-carbon and stabilized 18/8-CrNi(N)-steels / cast steels as well as on lowtemperatured similar austenitic CrNi-steels / cast steels. Tough at sub-zero temperature up to -196°C. Nonrusting. IK-resistant (Intergranular corrosion resistant). (Wetcorrosin up to 350°C) The machined materials are used as components and tools in the medical technology, food, oil, soap, synthetic rubber, film and photo industry.Material analysis C: 0,02 | Si: 0,85 | Mn: 1,75 | Cr: 19,0 | Ni: 9,5

QuFe54 is suitable for producing corrosion-resistant joints and building-up repairs to the same low-carbon and stabilized 18/8-CrNi(N)-steels/cast steels as well as the same or similar low-temperature austenite CrNi steels/cast steels. The material is tough up to -196°C. Stainless. IK resistant. (Wet corrosion up to 350°C) The worked-on material is used for parts or equipment in the medical branch, the food industry, the oil, soap, synthetic fibres, film and photo industry.Material analysis C: 0,02 | Si: 0,85 | Mn: 1,75 | Cr: 19,0 | Ni: 9,5

QuMed4316 is used for non-corroding joint and build-up weldings of similar low-carbon and stabilized 18/8-CrNi(N)-steels / cast steels as well as on lowtemperatured similar austenitic CrNi-steels / cast steels. Tough at sub-zero temperature up to -196°C. Nonrusting. IK-resistant (Intergranular corrosion resistant). (Wetcorrosin up to 350°C) The machined materials are used as components and tools in the medical technology, food, oil, soap, synthetic rubber, film and photo industry.Material analysis C: 0,02 | Si: 0,85 | Mn: 1,75 | Cr: 19,0 | Ni: 9,5

QuMed4316 is used for non-corroding joint and build-up weldings of similar low-carbon and stabilized 18/8-CrNi(N)-steels / cast steels as well as on lowtemperatured similar austenitic CrNi-steels / cast steels. Tough at sub-zero temperature up to -196°C. Nonrusting. IK-resistant (Intergranular corrosion resistant). (Wetcorrosin up to 350°C) The machined materials are used as components and tools in the medical technology, food, oil, soap, synthetic rubber, film and photo industry.Material analysis C: 0,02 | Si: 0,85 | Mn: 1,75 | Cr: 19,0 | Ni: 9,5