Alloy

Inconel 718 (UNS N07718 NC19FeNb) Fin Folded Sheet High-Strength Nickel Superalloy for Heat Exchanger Applications

Product Description INCONEL 718 Fin Folded Sheet, designated as UNS N07718 (NC19FeNb), is a precipitation-hardened nickel-chromium superalloy fin material specifically designed for high-temperature, high-pressure heat exchanger and thermal management applications. Thanks to its excellent high-temperature strength, oxidation resistance, fatigue resistance, and corrosion resistance, Inconel 718 folded fin sheets maintain long-term structural stability under severe thermal cycling and mechanical stress. The alloy is strengthened by niobium and molybdenum through age-hardening, making it especially suitable for compact heat exchangers operating in aerospace, energy, chemical processing, and industrial furnace systems. Fin sheets can be supplied in precision thickness, with uniform folding geometry and excellent formability, ensuring high heat-transfer efficiency and dimensional consistency. Material & Technical Data() 1. Chemical Composition (Typical) Element Content (%) Nickel (Ni) 50 - 55 Chromium (Cr) 17 - 21 Niobium + Tantalum (Nb+Ta) 4.75 - 5.50 Molybdenum (Mo) 2.80 - 3.30 Titanium (Ti) 0.65 - 1.15 Aluminum (Al) 0.20 - 0.80 Iron (Fe) Balance Cobalt (Co) ≤ 1.00 Carbon (C) ≤ 0.08 2. Mechanical Properties (Typical) Property Value Tensile Strength ≥ 1275 MPa Yield Strength (0.2%) ≥ 1035 MPa Elongation ≥ 12 % Hardness (Aged) 331 - 365 HB Maximum Service Temperature ~700°C 3. Product Details Item Description Product Form Fin Folded Sheet Thickness Range 0.08 - 0.5 mm (customizable) Fin Type Straight / Wavy / Offset / Folded Supply Condition Solution Annealed / Aged Surface Finish Bright / Annealed / Pickled Inspection Thickness, folding geometry, visual, MTC Certification EN 10204 3.1 / 3.2, COC Key Advantages Exceptional high-temperature and creep strength Excellent fatigue and thermal cycling resistance Superior oxidation and corrosion resistance Stable fin geometry during long-term service Suitable for compact and high-efficiency heat exchangers Typical Applications Aerospace heat exchangers Gas turbine cooling systems High-pressure industrial heat exchangers Chemical and petrochemical processing equipment Nuclear and energy systems Furnace and thermal management units Shandong Titanium Nickel Special Steel Co., Ltd., registered funds (one thousand yuan for 10,000 yuan), the company is mainly committed to high -tech enterprises that are integrated with special alloy materials, specializing in the research and sales of special alloys such as nickel -based and iron -based. Products include corrosion-resistant alloys, superalloys, precision alloys, Hastelloy, Monel, INCONEL, INCOLOY, copper-nickel alloys, titanium and titanium alloys, zirconium and zirconium alloys, nickel and nickel-based alloys, nickel-cobalt-based heat-resistant alloys , Hafnium alloy, etc., more than 60 kinds of alloy materials such as special stainless steel. On the basis of stabilizing the quality of the original products, according to the market demand, it solves the quality problems existing in the traditional metallurgical process, and ensures the low miscellaneous and low deflection of the alloy material products, which has won an excellent reputation in the industry. Detailed Photos Form: Finned / Folded heat sink plate Fin Type: Straight, wavy, or custom folded fins Fin Height: 1-50 mm (customizable) Fin Pitch: 1-20 mm (depending on application) Plate Thickness: 0.5-20 mm (customizable) Surface Finish: Polished, sandblasted, or as per client requirement Special Features: Folded fin design maximizes surface area for heat dissipation High corrosion resistance even in harsh chemical environments Can withstand high-temperature operation (up to

China Top Manufacturer 1.2344, H13, SKD61 Tool Steel Alloy Steel Mould Steel Stainless Steel Big Stock Round Square Flat Plate Sheet Block Special Steel

HOT WORK TOOL STEEL 1.2344/H13/SKD61/X40CRMOV5-1/4Cr5MoSiV1/4H5MF1S INTERNATIONAL STEEL GRADES ISO DIN Russia X40CrMoV5-1 ISO4957-2018 1.2344 DIN4957-2018 4H5MF1S GOST5950-2000 USA Japan China H13 ASTM A 681-2022 SKD61 JISG4404-2021 4Cr5MoSiV1 GB1299-2000 APPLICATION: This material is mainly used in aluminum extrusion dies, die casting mould, hot forming tools, die inserts for presses and upsetting machines, extrusion tools from light metals,forging dies, pressure casting tools, hot shear knives,tools for plastic industry and rollers for copper rolling. SPECIFICATION: It is characterized by very high hardenability, resistance to tempering, possibility of working at high temperatures and low susceptibility to forming a surface crack net.Disadvantages of the grade are low sensitivity to rapid temperature fluctuations during operation, low impact and shock resistance. Before use the tools must be warmed to a minimum temperature of 200 C, but must not exceed the tempering temperature. CHEMICAL COMPOSITION C Si Mn P S Cr Mo V 0.37-0.42 0.90-1.20 0.30-0.50 ≤0.030 ≤0.030 4.80-5.50 1.20-1.50 0.90-1.10 PRODUCTION FLOW& TECHNICAL INDEX Size Range Round 80-1000mm; Flat 80-500mmx300-1500mm Smelting EAF+LF+VD(or +ESR) Production Process Hot Forged+Spheriodizing Annealing≤235HB(or +EFS) Heat Treatment Softening annealing at a temperature of 800 - 840ºC Hardening at a temperature of 980 - 1050ºC Tempering at a temperature of 450 - 550ºC Relaxing annealing in the range of 470 - 550ºC Nitriding at a temperature of 470 - 550ºC Forging Ratio ≥6:1 Surface Machined Non-metallic Inclusions Acc. To ASTM E45 or finer A(Thin 1.0 Heavy 1.0); B(Thin 1.0 Heavy 1.0); C(Thin 1.0 Heavy 1.0); D((Thin 1.0 Heavy 1.0); Grain Size Acc. To ASTM E112≥ 7 or finer Microstructure Acc. To NADCA 207-2003 AS1-AS9(for die casting mould) Impact Value Acc. To ASTM E23-2002a(for die casting mould) UT SEP1921-84 3 D/d or finer Jiangyou Changxiang Special Steel Manufacturing Co.,Ltd. was stablished in 2006, total over 480 staff and cover 940,000 square meters area,with subsidiary company Changxiang Forging Mould Co.,Ltd.(Since 2017) and Shuangma Electric Power Co., Ltd. are belong to Changxiang Group. Our steels be widely used in industries ofmilitary,nuclear,aviation,clean energy,steam turbine,moulds,automobile, petroleum, chemistry,marine,mechanics, etc. Changxiang started export business since 2010,and we have exported to 23 countries and areas which including Germany,Poland,Italy,Spain, Canada,USA,Brazil,Turkey,Singapore and Japan,etc. Being a professional manufacturer of hot forged special steels,forgings and the largest forged tool steel stock trade center in Southwest of China,it's our responsibility to supply you stable quality steels,service and we'd like to be your reliable partner in global market. COMPLETE PRODUCTION LINE Hydropower Station 2×11000KW Generator to supply electricity for smelt and heat treatment; Smelting Capability 30Ton EAF+30Ton LF+30Ton VD+1~15Ton Argon-shield ESR; Forging Capability 4500Ton Forging Press+3150Ton Forging Press+1600 Ton Forging Press; 6Ton Electro-hydraulic Hammer+5Ton Electro-hydraulic Hammer; Heat Treatment Capability 21 Electric Furnaces for Annealing,Normalizing,Tempering; Workshop for QT(quenching+tempering)/Solution&Aging/EFS; Machining Capability 34 Sets Machining Equipments; Physical&Chemical Test Center 27 Sets Test Equipments; ADVANTAGES △Complete Production Line: Electric Power,Smelting,Forging,Heat Treatment,Machining,Physical&Chemical Test Center. △Technology Innovation: Research with Chongqing University and Beijing Iron&Steel Research Institu

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