Inconel 600 Tube with 1354-1413 ℃ Melting Range 444 J/kg-°C Specific Heat and 1.010 Permeability

With a melting range of 1354–1413°C and reliable service performance to 1095°C, Inconel 600 tube from Changzhou DLX Alloy Co., Ltd. bridges the gap between stainless steel — which loses strength and oxidation resistance above 800°C — and more expensive nickel superalloys. The high nickel content (≥72%) gives it an austenitic structure that is immune to chloride stress corrosion cracking, while the chromium content forms a tenacious protective oxide scale that regenerates faster than it spalls under thermal cycling. At DLX, our Inconel 600 tube production has been refined over two decades of nickel alloy specialization — cold drawn from solution-annealed hollows with precisely controlled reduction ratios and bright annealed to ASTM grain size specifications. Full EN 10204 3.1 MTC with eddy current testing on every length.

• 259°C safety margin between service and melt — Operating at 1095°C maximum with melting at 1354°C gives a 259°C buffer against catastrophic failure. In a furnace tube application, a 100°C temperature excursion above normal — from a burner malfunction or process upset — does not approach the solidus temperature. Stainless tubes operating near their limit have no such margin.
• Chloride SCC immune — the nickel advantage — ≥72% nickel content places Inconel 600 firmly in the alloy range where chloride stress corrosion cracking simply does not occur. In chemical plants and food processing facilities where chlorides are present in process fluids, CIP chemicals, or even cooling water on the shell side — this immunity eliminates a failure mode that stainless tube users must constantly manage through water chemistry control.
• Cold drawn to your dimensions with controlled grain size — Multi-pass drawing with precisely calculated reduction per pass avoids excessive cold work that leads to critical grain growth during annealing. Target ASTM grain size 4–6 for the optimal balance of creep strength and ductility — not a default "whatever comes out of the furnace."
• Bright annealed — no oxide scale, no pickling — Solution annealed at 1010–1050°C in controlled atmosphere and rapid cooled. Tube emerges with a bright, clean surface. No acid pickling required — no risk of intergranular attack from over-pickling, no hydrogen embrittlement risk.
• 100% eddy current — defects caught, not shipped — Every tube tested per ASTM E426. A defect in a furnace tube at 1000°C is not a quality complaint — it is a plant shutdown. We test as if your production schedule depends on it, because it does.
• Soft-annealed for U-bending without cracking — Tubes supplied in fully solution-annealed condition with elongation ≥30%. When you U-bend to 1.5* OD radius for your heat exchanger, the tube wall stretches without fracture. We can U-bend in-house and solution anneal the bend zone after forming.

Inconel 600 was one of the first nickel-chromium alloys we mastered at DLX. Unlike newer grades like 625 — which rely on molybdenum and niobium for their properties — 600 is metallurgically simpler: nickel for structure and corrosion resistance, chromium for oxidation protection, and iron for economy. But simple chemistry does not mean simple processing. The narrow window between full recrystallization and excessive grain growth during annealing, the tendency toward work hardening during cold drawing, and the requirement for a clean, bright surface without pickling damage — these are where twenty years of focused nickel alloy experience separate a usable tube from one that fails inspection.

Since 2002, our team has drawn Inconel 600 tube for furnace manufacturers in Europe, chemical plant operators in the Middle East, and heat exchanger builders across Asia. The feedback loop from thousands of tons delivered has tightened our process parameters to a level of repeatability that a general tube mill — running carbon steel one shift and nickel alloy the next — cannot match.

• 12,000 m² facility — dedicated nickel alloy cold drawing, bright annealing, straightening, and NDT lines. No carbon steel cross-contamination risk.
• Seamless OD range: 6.0–76.2 mm — standard and custom dimensions. Wall thickness from 0.71 mm.
• U-bending, cut-to-length, beveling — secondary processing in-house. Your order ships complete.
• ISO9001 with full heat traceability; SGS-accredited; BV and TÜV inspection available.

Source: DLX Alloy product catalog. EN 10204 3.1 MTC with full composition included on every shipment.

Third-party witnessing by SGS, BV, or TÜV available. Full hollow-to-tube traceability on every shipment.