Qu4519 Rod – Stainless Steel Laser Welding Wire 1.4539 / 904L

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

QuNi25 is used for joint and build-up welding of corrosion resistant steels as well as mixed connections. Application at fluid load of sulfuric acid and phosphoric acid dilution. Titanium stabilized QuNi25 is a full austenitic weld with high resistance against corrosion susceptibility by stress cracking and localized corrosion in chloric media. The weld is non-corroding in seawater.Material analysis C: <0,02 | Si: <0,5 | Mn: 0,9 | Cr: 21,5 | Ni: 42,0 | Mo: 3,0 | Cu: 2,0 | Fe: Rest | Ti: 1,0

QuNi25 is used for joint and build-up welding of corrosion resistant steels as well as mixed connections. Application at fluid load of sulfuric acid and phosphoric acid dilution. Titanium stabilized QuNi25 is a full austenitic weld with high resistance against corrosion susceptibility by stress cracking and localized corrosion in chloric media. The weld is non-corroding in seawater.Material analysis C: <0,02 | Si: <0,5 | Mn: 0,9 | Cr: 21,5 | Ni: 42,0 | Mo: 3,0 | Cu: 2,0 | Fe: Rest | Ti: 1,0

Qu4541 is used for instruments and building elements of the food industry, luxury food, film and photo industry as well as articles of daily use and power station construction. The resitance against intercrystalline corrosion also in welded form is pretty good by the Ti-alloy.Material analysis C: 0,08 | Si: 1,0 | Mn: 2,0 | P: 0,045 | S: 0,015 | Cr: 18,0 | Ni: 10,5 | Ti: 0,4

Qu4550 shows of a good resitance against intercrystalline corrosion also in welded form.Material analysis C: 0,08 | Si: 0,8 | Mn: 1,5 | P: 0,045 | S: 0,015 | Cr: 18,0 | Ni: 10,5 | Nb: 0,8

QuMed4551 is suitable for corrosion resistant joint and build-up weldings of similar, non-rusting and heat-resistant steels as well as austenitic CrNi-steels or rather kind of cast steels. Non-rusting. IK-constant (Wetcorrosion up to 400°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: ≤0,06 | Si: 0,9 | Mn: 1,3 | Cr: 20,0 | Ni: 9,5 | Nb: 12xC