QuFe55 Rod – Laser Welding Wire Stainless 1.4551 / ER347Si – Nb-Stabilised, Heat Resistant

QuFe55 is the niobium-stabilised 18/8 austenite for apparatus and piping construction: 1.4551 · ER347Si (19 9 Nb Si).The difference from ER308LSi is the niobium: it ties up the carbon as niobium carbide before chromium carbide can form. The weld metal therefore stays resistant to intergranular corrosion even under prolonged heat — which is why stabilised austenites are used wherever the plant runs hot in service, not just during welding.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 applicationsApparatus and piping constructionPlants with elevated operating temperatureComponents in stabilised CrNi steels (1.4541, 1.4550)Repair welding without solution annealingAdvantages 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

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 %Rod form advantage: Ideal for manual build-up welding with constant wire feed — also for repair sites that are hard to access on instruments and apparatus.Rod form: Rod lengths 1000 mm and 333 mm, 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

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

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 %Rod form advantage: Ideal for manual build-up welding with constant wire feed — also in hard-to-reach areas.Rod form: Rod lengths 1000 mm and 333 mm, 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

QuFe54 is the standard austenite for 18/8 CrNi steels: 1.4316 · ER308LSi (19 9 L Si). If a part is made of 1.4301, 1.4306 or 1.4311, this is the wire for it.Low carbon (the “L”) — so no chromium carbide precipitates at the grain boundaries and the weld metal stays resistant to intergranular corrosion, without solution annealing. The silicon makes the pool more fluid and the bead flatter. Tough 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 applicationsRepairs and joints on 1.4301, 1.4306, 1.4311Apparatus, vessel and piping constructionFood and beverage industryCryogenic applications 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 %Rod form advantage: Ideal for manual build-up welding with constant wire feed — also in hard-to-reach areas.Rod form: Rod lengths 1000 mm and 333 mm, 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

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

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 %TIG advantage: For larger repairs away from the laser — Ø 1.0–2.0 mm, considerably higher deposition per layer.TIG form: for manual repair welding. Material analysis (wt.-%)C 0.02 | Si 0.85 | Mn 1.75 | Cr 19.0 | Ni 9.5 | Fe balance