Inconel 740H Material Properties
UNS N07740 Overview
Explore the chemical composition, corrosion resistance, mechanical properties, and temperature characteristics of inconel 740h for optimal resistance, strength, and stability
Inconel 740H Chemical Composition
Inconel 740H Material Properties Overview
As a manufacturer and supplier in China, Arialloy supplies inconel 740H products at competitive prices.
Inconel 740H (UNS N07740) is a precipitation hardenable nickel alloy with an austenitic matrix, approximately 24.5% chromium and 20% cobalt. Aluminum, titanium and niobium promote the formation of gamma prime Ni3(Al,Ti,Nb), which strengthens the matrix and improves resistance to creep deformation. Chromium supports resistance to oxidation and hot corrosion, while the balance of strengthening elements contributes to stability during prolonged heating.
Compared with the original inconel 740 composition, the 740H modification adjusts the aluminum to titanium ratio and reduces niobium, silicon and boron to improve microstructural stability and reduce susceptibility to liquation cracking during welding. Grain boundary carbides also influence creep behavior and ductility, depending on their distribution and the exposure conditions. Inconel 740h can be processed into pipe, tube, bar, plate, sheet and forgings. Solution annealing followed by aging establishes its precipitation strengthened condition.
Inconel 740H Corrosion Resistance
Inconel 740H provides good resistance to steam oxidation and hot corrosion at elevated temperatures. Its high chromium content promotes the formation of a protective chromia scale, which limits oxygen transport and slows further surface degradation.
The alloy also shows resistance to corrosion beneath coal ash deposits. Its performance depends on deposit chemistry, sulfur and chlorine content, gas composition, temperature and duration of exposure. Steam exposure can still cause internal oxidation involving aluminum and titanium, so surface protection does not eliminate subsurface attack during prolonged exposure.
Inconel 740H Mechanical Properties
Inconel 740H Temperature Characteristics
Inconel 740H offers strong resistance to creep deformation at temperatures from 700 to 800°C. Its gamma prime precipitates and grain boundary carbides support strength during sustained exposure, although their size and distribution evolve with time.
Prolonged heating can coarsen the strengthening precipitates and affect toughness, making thermal history an important part of property assessment. Suitable operating conditions depend on the applied stress, required service life, product form and weld condition. Temperature limits should therefore be established from relevant creep rupture data and applicable allowable stresses.
Inconel 740H Products
Nickel Alloy 740H Product Types
With advanced equipment and expert craftsmanship, we create durable, high performance nickel alloy 740h products tailored to each project’s needs
Inconel 740H Data Sheet
Inconel Alloy 740H Data Sheet
Access / download the inconel 740h data sheet to gain in depth insights into precise physical and processing parameters
お客様のプロジェクトに最適なニッケル合金材料が確実に選定されるよう
物理的性質
| 密度 | g/cm3 | 8.05 | |
|---|---|---|---|
| lb/in.3 | 0.291 | ||
| 融点範囲 | °F | 2350 - 2484 | |
| °C | 1288 - 1362 | ||
| 電気抵抗率 | Ω-circ mil/ft | 702.7 | |
| μ Ω -m | 1.168 | ||
機械的特性
| Test Temperature °F (°C) | 0.2% Yield Strength, Ksi (MPa) | Ultimate Tensile Strength, Ksi (MPa) | Elongation % | Reduction of Area % |
|---|---|---|---|---|
| Transverse Orientation | ||||
| Room Temp. | 105 (724) | 154.6 (1066) | 23.7 | 28.1 |
| 1292°F (700°C) | 82.2 (567) | 124.9 (861) | 17 | 23.1 |
| 1337°F (725°C) | 85.4 (589) | 125 (862) | 22.8 | 37.4 |
| 1382°F (750°C) | 86.4 (596) | 118.6 (818) | 23.9 | 28.7 |
| 1424°F (775°C) | 80.8 (557) | 110.1 (759) | 22.1 | 30.7 |
| 1472°F (800°C) | 86.2 (594) | 100.2 (691) | 23.5 | 31.2 |
| Longitudinal Orientation | ||||
| Room Temp. | 107.7 (742) | 164.4 (1133) | 24.3 | 39.8 |
| 1292°F (700°C) | 88.2 (608) | 132.3 (912) | 31.9 | 35.7 |
| 1337°F (725°C) | 87 (560) | 126.3 (871) | 28.4 | 34.4 |
| 1382°F (750°C) | 83.5 (576) | 118.2 (815) | 22.9 | 24 |
| 1424°F (775°C) | 81.8 (564) | 111.1 (766) | 27.9 | 37.1 |
| 1472°F (800°C) | 79.3 (547) | 100 (689) | 31.5 | 40.9 |
Inconel 740H Standards
UNS N07740 Specifications & Standards
製造から検査に至るまで、当社は厳しい品質基準を満たし、公差や化学組成に関する要件に対応しています。
ASTM B983
シームレスパイプ・チューブ
AWS A5.14 ERNiCrMo-15
溶加材
Inconel 740H SHOW
Nickel Alloy 740H Showcase
From initial samples to large scale production, we supply high quality inconel 740h products and help you achieve your manufacturing goals.
要件をアップロードしてください
まずは、ご連絡先情報に加え、製品の種類、寸法、数量、および必要な規格をご記入ください。CAD図面、仕様書、または特別な公差要件がある場合は、それらをアップロードしてください。
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ご注文の確認と生産開始
お見積もりとデザインをご承認いただくと、確認の連絡をいただいた翌朝、お客様のプロジェクトは当社の制作スケジュールに組み込まれます。
配送・お届けについて
通常、受注生産品は20～45営業日以内に発送されます。在庫品およびサンプルは48時間以内に発送されます。
たった4つのステップ
Custom Inconel 740H Quotation Process
綿密な打ち合わせから最終納品に至るまで、私たちは custom inconel 740h product ご注文は簡単で便利です。卓越したカスタマーサービスにより、お客様のニーズを先読みし、専門的なソリューションをご提供するとともに、納期厳守をお約束します。
Inconel 740H Supplier - Arialloy
生産から品質管理まで、すべての工程を完璧を目指してきめ細かく調整しています
Arialloy inconel alloy 740h manufacturer has always been at the forefront of the industry. With its unremitting pursuit of quality, precision, and professional solutions, Arialloy has gradually established a complete production system and rapid supply capabilities. By continuously improving manufacturing processes, adopting cutting edge equipment, and adhering to strict quality control, Arialloy ensures that every product meets the highest requirements for durability, precision, and international standards
Inconel 740H Applications
UNS N07740 Alloy Solutions
当社は多岐にわたる業界にサービスを提供しており、厳格な品質管理と本格的な生産に注力し、専門的なノウハウと細部へのこだわりをもって、お客様のビジョンを現実のものにします。
Inconel 740H Knowledge
Nickel Alloy 740H Wiki
Arialloyは、お客様の選択に影響を与えるあらゆる要素について、お客様と共に検討いたします
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Inconel合金の全ラインナップをご覧いただき、材料の選択肢を広げ、最適なニッケル合金をお選びください。
Custom Inconel 740H FAQs
当社の専門家チームが、お客様のビジョンを現実のものにするため、あらゆる段階でサポートいたします。関連するサポートについては、よくある質問（FAQ）をご覧ください。
You can order our inconel 740h by first sending your requirements to sales@arialloy.com or submitting the form below. We will quote according to your specifications. After you approve the quotation, please send your PO. We will issue the PI for payment, and production will begin once the prepayment is received. We will let you know when your material is ready.
Our standard response time for inconel 740h quotations is generally within 24 hours. If your inquiry does not provide enough information or cannot be quoted, we will contact you promptly.
Since our standard inconel 740h quotation is FOB, the buyer will usually arrange transportation by appointing a freight forwarder. Our team will cooperate with the forwarder on all local requirements. We can also handle the shipment ourselves if you prefer a more convenient logistics solution.
The cost of alloying elements is an important part of the final inconel 740h price. When metals such as nickel, chromium, cobalt, molybdenum, titanium, and aluminum experience price increases or decreases, the production cost of the alloy can change as well, resulting in fluctuations in market quotations.
We are equipped to smelt inconel 740h internally rather than depending on external material sources. More than 30 vacuum smelting and electroslag remelting furnaces are available, covering batch capacities from 50 kg through 5,000 kg. This allows us to tailor production to the order size and accept smaller quantities.
We supply inconel 740h test certificates before dispatch, following the relevant industry standards. The certificate contains the material standard, chemical analysis, mechanical properties, dimensions, and heat number as supporting compliance documentation.
The inconel 740h alloy chemistry is controlled through monitored material ratios and chemical analysis during smelting. After the material is finished, PMI testing is performed, and we can arrange external laboratory testing to provide additional chemical results.