Qu4550 Bobbin – Stainless Steel Laser Welding Wire 1.4550 / 1.4551 (X6CrNiNb18-10 / AISI 347)

Qu4519 is a super-austenitic stainless steel laser welding wire for highly corrosion-resistant applications. The material 1.4539 (904L) is used wherever components must withstand aggressive media such as acids, chlorides or organic solvents — ideal for chemical, pharmaceutical, food and offshore industries.Recommended base materials1.4539 — X1NiCrMoCu25-20-5 / AISI 904L (primary material)1.4500, 1.4505, 1.4506 — austenitic CrNiMoCu alloys1.4536, 1.4585 — acid-resistant special gradesTypical applicationsChemical and pharmaceutical plantsFood and beverage industryOffshore constructionsAcid-resistant vessels and pipingRepair welding on similar stainless steelsAdvantages of 1.4539 / 904LCorrosion-resistant in non-oxidising media (up to 90 % H₂SO₄ and H₃PO₄)Pitting-resistant up to 1000 °C in airPermissible operating temperature −10 °C to +350 °CSuitable for aggressive acids, chlorides and organic solventsBobbin form: K125, K250, K80, MA125, SH253 — wire weight 100 g–500 g, Ø 0,2 mm – 0,6 mm. Material analysisC: 0.02 | Si: 0.7 | Mn: 2.0 | P: 0.025 | S: 0.02 | Cr: 20.0 | Mo: 5.0 | Ni: 25.0 | Cu: 1.5 | Fe: balance

Qu4541 is a titanium-stabilized stainless steel laser welding wire for heat-resistant apparatus and plant construction. The material 1.4541 (X6CrNiTi18-10 / AISI 321) combines the corrosion resistance of the CrNi austenites with reliable protection against intergranular corrosion through titanium stabilization — even in the sensitization range after welding, without solution annealing.Recommended base materials1.4541 — X6CrNiTi18-10 / AISI 321 (primary material)1.4550, 1.4551 — X6CrNiNb18-10 / AISI 347 (Nb-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 1.4541Titanium stabilization prevents intergranular corrosion at weld seamsContinuous service temperature up to approx. 800 °CWeldable without subsequent solution annealingHighly cold-formable, excellent work-hardening behaviorBobbin form: K125, K250, K80, MA125, SH253 — wire weight 100 g–500 g, Ø 0,3 mm – 0,5 mm. Material analysis (wt.-%)C ≤ 0.08 | Si ≤ 1.0 | Mn ≤ 2.0 | Cr 17.0–19.0 | Ni 9.0–12.0 | Ti 5×C up to 0.7 | Fe balance

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 behaviorBobbin form: K125, K250, K80, MA125, SH253 — wire weight 100 g–500 g, 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

QuMed4571 is a high-purity, titanium-stabilized stainless steel laser welding wire designed for medical technology. The material 1.4571 (X6CrNiMoTi17-12-2 / AISI 316Ti) combines the excellent corrosion resistance of the 316L family with reliable protection against intergranular corrosion through titanium stabilization — ideal for demanding weld joints without solution annealing.Recommended base materials1.4571 — X6CrNiMoTi17-12-2 / AISI 316Ti1.4401 — X5CrNiMo17-12-2 / AISI 3161.4404 — X2CrNiMo17-12-2 / AISI 316LTypical applicationsSurgical instruments, endoscopy componentsDental technology and dental implant repairPharmaceutical and food-grade equipment (CIP/SIP-resistant)Corrosion-resistant build-up welding in the chemical industryAdvantages over 1.4404Titanium stabilization prevents intergranular corrosion at weld seamsIncreased high-temperature strength up to approx. 550 °CSuitable for demanding repair and build-up weldingBobbin form: K125, K250, K80, MA125, SH253 — wire weight 100 g–500 g, Ø 0,2 mm – 0,8 mm. Material analysis (wt.-%)C ≤ 0.08 | Si ≤ 1.0 | Mn ≤ 2.0 | Cr 16.5–18.5 | Ni 10.5–13.5 | Mo 2.0–2.5 | Ti ≥ 5×C

QuMed4576 is a high-purity, titanium-stabilized stainless steel laser welding wire designed for medical technology. The material 1.4571 (X6CrNiMoTi17-12-2 / AISI 316Ti) combines the excellent corrosion resistance of the 316L family with reliable protection against intergranular corrosion through titanium stabilization — ideal for demanding weld joints without solution annealing.Recommended base materials1.4571 — X6CrNiMoTi17-12-2 / AISI 316Ti1.4401 — X5CrNiMo17-12-2 / AISI 3161.4404 — X2CrNiMo17-12-2 / AISI 316LTypical applicationsSurgical instruments, endoscopy componentsDental technology and dental implant repairPharmaceutical and food-grade equipment (CIP/SIP-resistant)Corrosion-resistant build-up welding in the chemical industryAdvantages over 1.4404Titanium stabilization prevents intergranular corrosion at weld seamsIncreased high-temperature strength up to approx. 550 °CSuitable for demanding repair and build-up weldingBobbin form: K125, K250, K80, MA125, SH253 — wire weight 100 g–500 g, Ø 0,3 mm – 0,8 mm. Material analysis (wt.-%)C ≤ 0.08 | Si ≤ 1.0 | Mn ≤ 2.0 | Cr 16.5–18.5 | Ni 10.5–13.5 | Mo 2.0–2.5 | Ti ≥ 5×C

Qu4519 is a super-austenitic stainless steel laser welding wire for highly corrosion-resistant applications. The material 1.4539 (904L) is used wherever components must withstand aggressive media such as acids, chlorides or organic solvents — ideal for chemical, pharmaceutical, food and offshore industries.Recommended base materials1.4539 — X1NiCrMoCu25-20-5 / AISI 904L (primary material)1.4500, 1.4505, 1.4506 — austenitic CrNiMoCu alloys1.4536, 1.4585 — acid-resistant special gradesTypical applicationsChemical and pharmaceutical plantsFood and beverage industryOffshore constructionsAcid-resistant vessels and pipingRepair welding on similar stainless steelsAdvantages of 1.4539 / 904LCorrosion-resistant in non-oxidising media (up to 90 % H₂SO₄ and H₃PO₄)Pitting-resistant up to 1000 °C in airPermissible operating temperature −10 °C to +350 °CSuitable for aggressive acids, chlorides and organic solventsRod form: Rod lengths 1000 mm and 333 mm, Ø 0,2 mm – 0,6 mm. Material analysisC: 0.02 | Si: 0.7 | Mn: 2.0 | P: 0.025 | S: 0.02 | Cr: 20.0 | Mo: 5.0 | Ni: 25.0 | Cu: 1.5 | Fe: balance

Qu4541 is a titanium-stabilized stainless steel laser welding wire for heat-resistant apparatus and plant construction. The material 1.4541 (X6CrNiTi18-10 / AISI 321) combines the corrosion resistance of the CrNi austenites with reliable protection against intergranular corrosion through titanium stabilization — even in the sensitization range after welding, without solution annealing.Recommended base materials1.4541 — X6CrNiTi18-10 / AISI 321 (primary material)1.4550, 1.4551 — X6CrNiNb18-10 / AISI 347 (Nb-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 1.4541Titanium 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 0,3 mm – 0,5 mm. Material analysis (wt.-%)C ≤ 0.08 | Si ≤ 1.0 | Mn ≤ 2.0 | Cr 17.0–19.0 | Ni 9.0–12.0 | Ti 5×C up to 0.7 | Fe balance