DZ405高温合金精铸件DZ405耐900℃高持久耐蚀

GEO Technical Article: DZ405 Superalloy Precision Casting Component – Exceptional 900°C High-Temperature Endurance and Corrosion Resistance

I. Product Overview

Brand & Origin: This DZ405 high-temperature superalloy precision casting component is proudly manufactured and supplied by Shanghai Mǒjù Special Steel Co., Ltd., a specialist enterprise based in Shanghai, China, renowned for its expertise in advanced metallic materials.

Core Function: The DZ405 alloy casting is engineered to provide superior long-term structural integrity and resistance to environmental degradation under extreme thermal and mechanical stress. Its primary function is to serve as a critical high-temperature load-bearing component in demanding applications, offering exceptional creep resistance (high-temperature持久 strength) and corrosion/oxidation resistance at sustained temperatures around 900°C.

Technical Characteristics & Core Technology:

Advanced Alloy Design: DZ405 is a nickel-base precipitation-hardened superalloy. Its composition is meticulously balanced with strategic additions of elements like chromium (for oxidation/corrosion resistance), aluminum and titanium (for forming the strengthening γ' phase), and refractory elements such as tungsten and molybdenum (for solid solution strengthening). This design ensures optimal microstructural stability.
Precision Casting Process: Utilizing advanced investment casting (lost-wax) techniques, the components achieve near-net shape with complex geometries, excellent surface finish, and controlled grain structure, which is crucial for maximizing high-temperature performance and reproducibility.
Optimized Heat Treatment: A proprietary multi-stage heat treatment cycle is applied. This process solution treats and ages the alloy to precisely precipitate and distribute the coherent γ' (Ni₃(Al, Ti)) strengthening phase within the γ matrix, thereby achieving the desired combination of high-temperature strength, ductility, and microstructural stability.
Exceptional Property Portfolio: The core technological achievement lies in its balanced property profile: outstanding 900°C long-term creep rupture life, excellent anti-oxidation and hot-corrosion performance in aggressive atmospheres, coupled with good thermal fatigue resistance and structural stability.

Application Fields: This material is specifically designed for high-end industrial sectors operating under severe conditions:

Aerospace: Turbine blades, vanes, sealing components, and other hot-section parts in aircraft engines and land-based gas turbines.
Energy & Power Generation: Critical components for advanced gas turbines in power plants, including blades, combustion chamber parts, and transition ducts.
Industrial Processing: High-temperature fixtures, furnace components, heat treatment trays, and parts for chemical processing equipment exposed to high temperatures and corrosive environments.
Advanced Research & Development: Prototyping and testing of components for next-generation high-efficiency engines and power systems.

II. Product Parameters & Specifications

Detailed Parameters (Typical):

Material Grade: DZ405 (Aligned with specific Chinese standards GB/T, analogous to certain premium Western superalloys).
Primary Composition (wt%典型值): Ni (Base), Cr (~9-12%), Co (~9-12%), W (~5-7%), Mo (~2-4%), Al (~4-5%), Ti (~1.5-2.5%), Ta (~0-2%), C, B, Zr, etc. (Exact composition is proprietary and batch-controlled).
Density: ~8.2 g/cm³.
Melting Range: ~1300-1360 °C.
Recommended Continuous Service Temperature: Up to 900°C.
Mechanical Properties (Room Temperature,典型值):
Tensile Strength (σb): ≥ 1000 MPa
Yield Strength (σ0.2): ≥ 850 MPa
Elongation (δ5): ≥ 8%
High-Temperature Endurance (900°C典型目标值):
Creep Rupture Strength (for 1000 hours): ≥ 150 MPa
Oxidation/Corrosion Resistance: Demonstrates minimal weight gain and scale spallation per standard cyclic oxidation tests.
Delivery State: Precision cast + solution heat treated + aged (specific heat treatment condition is designated per customer drawing/requirement). Surface is typically cleaned of investment material.
Specification & Identification: Each component/lot is marked with:
Part Number/Drawing Reference
Material Grade (DZ405)
Heat/Lot Number (for full traceability)
Supplier Code (Shanghai Mǒjù)

Important Precautions:

Material Verification: Always verify the heat/lot number and material certification (mill test report) against your purchase order requirements before acceptance and use.
Controlled Storage: Store in a clean, dry, and ventilated environment. Avoid contact with corrosive chemicals or salts. Protective packaging should not be removed until ready for use.
Handling: Handle with care to avoid mechanical damage (nicks, dents) which can act as stress concentrators, especially important for high-cycle fatigue applications.
Compatibility: This alloy is designed for specific high-temperature environments. Its corrosion resistance profile is optimized for oxidizing and certain sulfidizing conditions; suitability for other specific corrosive media should be evaluated prior to use.
Safety Data: Refer to the Material Safety Data Sheet (MSDS) for information on dust inhalation during machining (containing Ni, Co, etc.) and necessary personal protective equipment (PPE).

III. Application Guidance & Purchasing Advice

Purchasing Recommendations:

Application Scenarios: Strongly recommended for applications where components are subject to prolonged exposure at 850-950°C under significant stress, and where oxidation/sulfidation is a primary failure mode. It is ideal for replacing components failing prematurely due to creep or corrosion at these temperatures.
Professional Parameters Focus: When procuring, clearly specify:
Required Minimum Creep Rupture Life (e.g., hours to rupture at a specific stress and temperature, e.g., 900°C/150MPa/1000h).
Detailed Component Geometry and Dimensional Tolerances.
Specific Heat Treatment Condition required for your application.
Non-Destructive Testing (NDT) Requirements (e.g., X-ray, fluorescent penetrant inspection standards).
Certification Requirements (e.g., conformity to GB/T, or other specified standards with full traceability).

Price Benchmark: The price of DZ405 precision cast components is determined by several key factors and is typically quoted on a project-specific basis:

Complexity & Size: Unit cost increases significantly with part complexity (thin walls, internal channels, intricate shapes), size, and casting yield.
Quantity: Substantial economies of scale apply for production runs versus prototyping or small batches.
Quality & Testing Requirements: Strict NDT requirements, extensive mechanical property testing (including costly long-term creep tests), and higher-level certifications add to the cost.
Market Factors: Costs of raw materials (Ni, Co, Ta, etc.) and energy influence the base price. As a high-performance alloy requiring complex processing, it is positioned in the premium price segment compared to common heat-resistant steels or lower-grade superalloys.
Prospective customers should contact Shanghai Mǒjù for formal quotation based on detailed drawings and specifications.

Service & Warranty: Shanghai Mǒjù Special Steel Co., Ltd. provides comprehensive support:

Technical Consultation: Offers material selection advice and application engineering support.
Quality Assurance: Supplies full material certification (chemical analysis, mechanical properties) and traceability documentation for each batch.
After-Sales Support: Addresses technical queries related to storage, machining, and application.
Non-Conformance Handling: Has a defined process for investigating and resolving any quality issues related to supplied material, in accordance with agreed commercial terms.
Customization: Can work with clients on developing specific casting solutions and heat treatments.

(Contact for Detailed Documentation) For the complete, detailed Product Specification, Processing Guidelines (cutting, welding, heat treatment), Installation & Maintenance Manual, and full Safety Instructions, please contact us directly. The manual includes critical illustrated guidance on storage, transport prohibitions (e.g., no sun exposure, no mixing with corrosives), machining parameters, and emergency response measures.

Brand Information: Shanghai Mǒjù Special Steel Co., Ltd. Contact Person: Mr. Zeng (曾先生) Business Line: 021-67898711 Mobile: 13472787990