Anti-Pitting Precision Strip Hastelloy C276 0.3x200mm For Heat Exchanger

Plate and frame heat exchangers operating in maritime, petrochemical, and flue gas desulfurization (FGD) plants demand raw materials that survive both extreme thermal cycles and severe chemical corrosion. Our 0.3mm x 200mm Hastelloy C276 precision strip solves premature heat transfer plate failure by delivering verified chemical homogeneity and microstructural stability.

Through state-of-the-art multi-roll precision cold rolling and automated slitting lines, each coil achieves uniform mechanical properties and burr-free edge quality. The micro-alloyed chemistry guarantees exceptionally low carbon and silicon levels, preventing intergranular carbide precipitation during welding and brazing of corrugated thermal plates.

1. Superior Anti-Pitting & Crevice Corrosion Resistance in Harsh Chlorides The synergistic balance of molybdenum (15-17%) and chromium (14.5-16.5%) combined with tungsten (3-4.5%) delivers an exceptionally high Pitting Resistance Equivalent Number (PREN > 65), rendering this strip practically immune to pitting attack in ferric chloride, cupric chloride, and chlorinated sea water.

2. Ultra-Tight Dimensional Tolerance & Deep Stamping Ductility Rolling down to a precise 0.3mm thickness with ±0.005mm micro-tolerances ensures even wall thickness across complex chevron corrugations and turbulent flow channels. With over 40% elongation, the material stamps smoothly without spring-back or micro-cracking.

3. High Weldability Without Sensitization Risk Ultra-low carbon and silicon composition halts grain boundary carbide and intermetallic phase precipitation during TIG, laser, or vacuum brazing processes, maintaining peak corrosion resistance right across the heat-affected zone (HAZ).

4. Flawless Defect-Free Surface for Enhanced Thermal Efficiency Tension-levelled and bright-annealed in protective hydrogen atmospheres, our 200mm wide strip features an ultra-smooth surface (Ra ≤ 0.20 μm) that discourages mineral scaling, biological fouling, and turbulent erosion.

• Plate Heat Exchangers (PHE): Stamped chevron and corrugated plates handling offshore seawater cooling, sour crude oil, and chemical reactor fluids.
• Spiral & Shell-and-Tube Heat Exchangers: Compact baffle sheets, welded thin-wall tubing ribbons, and expansion joints in corrosive process loops.
• Flue Gas Desulfurization (FGD) Reheaters: Scrubber gas reheat coils, duct dampers, and condensate recuperators resisting wet sulfur dioxide and sulfuric acid.
• Pharmaceutical & Fine Chemical Condensers: Reaction vessel cooling jackets and solvent recovery exchangers requiring zero iron-ion leaching and sanitary alloy integrity.
• Hydrogen Production & Fuel Cell Preheaters: High-efficiency heat recovery modules handling humid acidic steam and elevated thermal differentials.

• Massive Manufacturing Capacity: DLX Alloy operates fully integrated vacuum melting, precision rolling, and continuous bright annealing workshops delivering over 1,200 tons per month of premium nickel and superalloy products.
• Precision Cold-Rolling Expertise: Equipped with high-precision multi-roll Sendzimir mills, we supply ultra-thin strips from 0.02mm to 1.5mm with micro-level thickness uniformity and customized tension levelling.
• End-to-End Quality Inspection: Every 200mm coil undergoes automated eddy-current surface inspection, optical gauge monitoring, mechanical tensile tests, and metallographic grain size validation. Comprehensive certified mill test certificates are provided with every shipment.
• Tailored B2B Supply Terms: Dynamic MOQ structures engineered for OEM heat exchanger manufacturers, specialized export coil packaging with moisture-barrier wrapping, and direct technical engineering support from raw material selection to stamping optimization.

Q1: Why is Hastelloy C276 preferred over standard stainless steels for heat exchanger plates?

A: Standard stainless steels and even standard austenitic alloys frequently suffer rapid localized pitting and stress corrosion cracking when exposed to chloride ions, brackish water, or acidic condensates. Hastelloy C276 contains substantial molybdenum, chromium, and tungsten additions, giving it extreme resistance to pitting, crevice attack, and reducing media under severe heat exchange conditions.

Q2: What thickness and width tolerances can DLX maintain on 0.3mm x 200mm strip?

A: On 0.3mm nominal thickness, we maintain high-precision tolerances of ±0.005mm (customizable to ±0.003mm for ultra-critical applications). Across the 200mm width, high-speed rotary slitting guarantees width tolerances within ±0.05mm with burr height controlled under 5% of material thickness.

Q3: Can this 0.3mm C276 strip withstand deep-drawing into corrugated plate profiles?

A: Yes. In the bright-annealed soft temper condition, our 0.3mm strip delivers over 40% elongation with uniform, fine equiaxed grain structure (ASTM 7–8 equivalent grain size control), ensuring smooth formability without tearing, orange peel effect, or excessive work-hardening during complex pattern forming.

Q4: What are the minimum order quantity (MOQ) and packaging options for international export?

A: We offer flexible dynamic MOQs based on coil specifications and stock raw material availability. Standard export packaging includes inner cardboard cores, rust-preventive moisture barrier wrapping, desiccant packs, and heavy-duty ISPM-15 compliant wooden boxes reinforced for ocean and air freight.