QuFe52 Bobbin – Laser Welding Wire ER309LSi / 1.4332 (23 12 L Si) – Dissimilar Joints

QuFe52 is the classic wire for dissimilar (black-and-white) joints: EN ISO 14343-A W/G 23 12 L Si · AWS A5.9 ER309LSi · filler material no. 1.4332.Its high alloy content (Cr 23 % / Ni 13.5 %) is not an end in itself: it is the reserve that gets diluted when the carbon steel melts in. A regular 18/8 wire would lose its austenitic safety margin here and harden — ER309LSi keeps its microstructure. That is why it is the standard for cladding on unalloyed and low-alloy backing steels and for joining stainless to carbon steel. Low-carbon (C 0.02 %) and therefore resistant to intergranular corrosion, usable up to 350 °C.Recommended base materials1.4306, 1.4401, 1.44041.4541, 1.4550, 1.4571, 1.4580each in combination with carbon steelsCladding on unalloyed and low-alloy backing steelsTypical applicationsDissimilar joints — stainless to carbon steelCladding welds on backing steelsChemical plant and vessel construction up to 350 °CBuffer layer beneath matching stainless cap passesProperties and advantagesCr 23 % / Ni 13.5 % — alloy reserve against dilution by the carbon steelLow-carbon (C 0.02 %) → resistant to intergranular corrosionUsable up to 350 °C (wet corrosion)Weld metal: Re 430 MPa · Rm 600 MPa · A 31 %Rod form advantage: Constant wire feed for manual cladding and dissimilar joints.Rod form: Rod lengths 1000 mm and 333 mm, Ø 0,2 mm – 0,6 mm. Material analysis (wt.-%)C 0.02 | Si 0.4 | Mn 1.8 | Cr 23.0 | Ni 13.5 | Fe balance

QuMed4576 is a niobium-stabilized CrNiMo laser welding wire to EN ISO 14343-A G/W 19 12 3 Nb Si / AWS ER318Si (material no. 1.4576). It is used for joint and build-up welding on stabilized, similar, chemically resistant CrNiMo steels in chemical apparatus and vessel construction — for service temperatures from −120 °C to +400 °C. The weld metal is an austenite with a ferrite content.Recommended base materials1.4401, 1.4404 — X5/X2CrNiMo17-12-2 / AISI 316, 316L1.4435, 1.4436 — CrNiMo austenites with increased Mo content1.4571, 1.4573 — Ti-stabilized CrNiMo steels (316Ti)1.4580, 1.4581, 1.4583 — Nb-stabilized CrNiMo steels and cast gradesTypical applicationsChemical apparatus and vessel constructionJoint welding on stabilized CrNiMo steelsBuild-up welding and repair of chemically stressed componentsCryogenic applications down to −120 °CPharmaceutical, food and process engineeringAdvantages of 1.4576 / ER318SiNiobium stabilization prevents intergranular corrosion at weld seamsMolybdenum (3.0 %) increases resistance to pitting and crevice corrosionService range −120 °C to +400 °CWeld metal: yield 450 MPa, tensile 640 MPa, elongation 30 %Bobbin form: K125, K250, K80, MA125, SH253 — wire weight 100 g–500 g, Ø 0,3 mm – 0,8 mm. Material analysis (wt.-%)C 0.03 | Si 0.4 | Mn 1.5 | Cr 19.0 | Ni 12.0 | Mo 3.0 | Nb 0.55 | Fe balance

QuFe50 is the niobium-stabilised CrNiMo austenite for chemical and plant engineering: 1.4576 · ER318Si (19 12 3 Nb Si).The niobium ties up the carbon and thereby makes the weld metal resistant to intergranular corrosion — even without solution annealing after welding. Together with the molybdenum this gives the combination that vessels, piping and apparatus in chloride-bearing media need. Service range −120 to +400 °C.Recommended base materials1.4401, 1.4404 — X5/X2CrNiMo17-12-2 / AISI 316, 316L1.4435, 1.4436 — CrNiMo austenites with increased Mo content1.4571, 1.4573 — Ti-stabilized CrNiMo steels (316Ti)1.4580, 1.4581, 1.4583 — Nb-stabilized CrNiMo steels and cast gradesTypical applicationsChemical plant construction — vessels, pipingComponents in chloride-bearing mediaPlants without solution annealing after weldingRepairs on Nb-stabilised CrNiMo steelsAdvantages of 1.4576 / ER318SiNiobium stabilization prevents intergranular corrosion at weld seamsMolybdenum (3.0 %) increases resistance to pitting and crevice corrosionService range −120 °C to +400 °CWeld metal: yield 450 MPa, tensile 640 MPa, elongation 30 %Bobbin form: K125, K250, K80, MA125, SH253 — wire weight 100 g–500 g, Ø 0,2 mm – 0,8 mm. Material analysis (wt.-%)C 0.03 | Si 0.4 | Mn 1.5 | Cr 19.0 | Ni 12.0 | Mo 3.0 | Nb 0.55 | Fe balance

QuMed4316 is the standard austenite for the classic 18/8 CrNi steels: EN ISO 14343-A G/W 19 9 L Si · AWS SFA-5.9 ER308LSi (filler material no.: 1.4316). The L stands for low carbon (C 0.02 %), the Si for the raised silicon content that improves the flow of the seam.The low carbon content is the key: it prevents chromium carbides forming at the grain boundaries and thus makes the weld metal resistant to intercrystalline corrosion. On top of that comes cryogenic toughness down to −196 °C.Recommended base materials1.4301, 1.4306, 1.4311 — the classic 18/8 CrNi(N) steels1.4319, 1.4541, 1.4550, 1.4551, 1.4552 — stabilised variantsCryogenic austenitic CrNi steels and cast steelTypical applicationsComponents and devices in medical technologyFood industry — vessels, pipes, fittingsOil, soap, synthetic fibre, film and photographic industriesCorrosion-resistant build-ups (wet corrosion up to 350 °C)Cryogenic components down to −196 °CProperties and advantagesResistant to intercrystalline corrosion thanks to low carbon content (C 0.02 %)Cryogenic to −196 °C, stainlessRaised Si content for better seam flow and clean seam edgesWeld metal: Re 315 MPa · Rm 540 MPa · A 35 %Bobbin form: K125, K250, K80, MA125, SH253 — wire weight 100 g–500 g, Ø 0,2 mm – 0,8 mm. Material analysis (wt.-%)C 0.02 | Si 0.85 | Mn 1.75 | Cr 19.0 | Ni 9.5 | Fe balance

QuFe44 is a molybdenum-alloyed stainless steel laser welding wire for corrosion-resistant joining and build-up welding in the food, chemical and textile industries. The alloy conforms to EN ISO 14343-A G/W 19 12 3 l(Si) (AWS ER316L(Si), material no. 1.4430) and is suitable for all common 316-grade stainless steel base materials — from 1.4401 to 1.4583.Recommended base materials1.4401 — X5CrNiMo17-12-2 / AISI 3161.4404 — X2CrNiMo17-12-2 / AISI 316L (primary material)1.4571 — X6CrNiMoTi17-12-2 / AISI 316Ti (titanium-stabilized)1.4580 — X6CrNiMoNb17-12-2 / AISI 316Cb (niobium-stabilized)1.4583 — X10CrNiMoNb18-12 / AISI 318Typical applicationsVessels and pipelines in the food and beverage industryApparatus construction for chemical and pharmaceutical industriesTextile and fuel industry componentsCorrosion-resistant build-up welding on 316-grade stainless steelsRepair welding on similar stainless steelsProperties and advantagesMo alloying increases resistance to pitting and crevice corrosionVery low carbon content (C 0.02 %) — prevents sensitization at weld seamsGood mechanical properties: Re 430 MPa · Rm 650 MPa · A 30 %Shielding gas: Argon 4.6 or better — no mixed gas requiredNorm-compliant: EN ISO 14343-A G/W 19 12 3 l(Si) · AWS ER316L(Si)Bobbin form: K125, K250, K80, MA125, SH253 — wire weight 100 g–500 g, Ø 0,2 mm – 0,8 mm. Material analysis (wt.-%)C: 0.02 | Si: 0.85 | Mn: 1.8 | Cr: 18.5 | Ni: 12.5 | Mo: 2.6 | Fe: balance

QuMed4430 is the molybdenum-alloyed austenite: EN ISO 14343-A G/W 19 12 3 L Si · AWS SFA-5.9 ER316LSi (filler material no.: 1.4430). Compared with the 18/8 standard it adds 2.6 % molybdenum — and that shifts the corrosion resistance exactly where chromium alone is no longer enough: into chloride-bearing media.Molybdenum inhibits pitting. That is why QuMed4430 is the wire for apparatus in the chemical and food industries. Service range −196 °C to 400 °C, low carbon (C 0.02 %) and therefore resistant to intercrystalline corrosion.Recommended base materials1.4401, 1.4404 — the CrNiMo standard steels (316 / 316L)1.4571 — titanium-stabilised (316Ti)1.4580, 1.4583 — niobium-stabilised variantsTypical applicationsApparatus and components in the chemical industryFood industry — vessels, lines, fittingsTextile and fuel industriesCorrosion-resistant build-up weldingJoints on stainless and heat-resistant steelsProperties and advantages2.6 % molybdenum — considerably higher pitting resistance than the 18/8 standardLow carbon (C 0.02 %) and therefore resistant to ICService range −196 °C to 400 °CWeld metal: Re 430 MPa · Rm 650 MPa · A 32 %Bobbin form: K125, K250, K80, MA125, SH253 — wire weight 100 g–500 g, Ø 0,2 mm – 0,8 mm. Material analysis (wt.-%)C 0.02 | Si 0.85 | Mn 1.8 | Cr 18.5 | Ni 12.5 | Mo 2.6 | Fe balance

QuMed4551 is a niobium-stabilized stainless steel laser welding wire to EN ISO 14343-A G/W 19 9 Nb Si / AWS A5.9 ER347Si (material no. 1.4551). It is designed for corrosion-resistant joint and build-up welding on identical and similar stainless, heat-resistant and austenitic CrNi steels and cast steel grades — stainless and resistant to intergranular corrosion (wet corrosion up to 400 °C).Recommended base materials1.4301, 1.4303, 1.4306 — austenitic CrNi standard grades1.4310, 1.4319 — high-strength CrNi spring steels1.4541 — X6CrNiTi18-10 / AISI 321 (Ti-stabilized)1.4550, 1.4552 — X6CrNiNb18-10 / AISI 347 (Nb-stabilized)Typical applicationsMedical technology — instruments, devices, componentsFood industry and plant constructionOil, soap and synthetic fibre industriesFilm and photographic industriesJoint and build-up welding on austenitic cast steelAdvantages of 1.4551 / ER347SiNiobium stabilization prevents intergranular corrosion at weld seamsStainless, IGC-resistant in wet corrosion up to 400 °CWeldable without subsequent solution annealingWeld metal: yield 390 MPa, tensile 590 MPa, elongation 30 %Bobbin form: K125, K250, K80, MA125, SH253 — wire weight 100 g–500 g, Ø 0,2 mm – 0,8 mm. Material analysis (wt.-%)C 0.06 | Si 0.90 | Mn 1.3 | Cr 20.0 | Ni 9.5 | Nb 12×C | Fe balance