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Wholesale K403 Master Alloy Bar Factory Price Casting Superalloy
K403 master alloy bar is a high-quality nickel-based precipitation-hardening equiaxed casting superalloy supplied in bar form for remelting and precision investment casting. Also known as K3, this casting superalloy delivers outstanding high-temperature strength, good castability for complex shapes, and reliable performance in demanding aero-engine and gas turbine environments. Available at competitive factory wholesale prices for industrial buyers seeking consistent quality master alloy stock.
- Overview
- Specification
- Applications
- Company Profile
- FAQs
- Recommended Products
Introduction to K403 Master Alloy Bar Factory
K403 is a classic Chinese nickel-based casting superalloy designed for service temperatures below 1000°C. Strengthened by a combination of chromium, cobalt, tungsten, molybdenum, aluminum, and titanium, it forms a high volume fraction of γ′ phase for superior creep resistance and high-temperature strength.
The master alloy bar form is vacuum-melted and supplied ready for remelting, enabling the production of intricate precision castings. Key performance highlights include lasting strength of approximately 150 MPa at 1000°C/100 h and 94 MPa at 1000°C/1000 h, density of about 8.1 g/cm³, and melting range of 1260–1338°C. Its excellent fluidity and castability make it ideal for complex thin-wall and precision components in aerospace and power generation.
Product Features of K403 Master Alloy Bar
√Factory-Direct Wholesale Advantage: Direct sourcing from our 1200-ton capacity factory ensures competitive pricing and stable supply for large industrial contracts.
√ISO 9001 Certified Quality: Every melt is managed under a strict quality management system, ensuring full batch traceability and consistency.
√Ultra-High Purity VIM Refining: Advanced vacuum melting eliminates slag and reduces gas content (O ≤ 15ppm), significantly improving casting yields.
√Exceptional Thermal Fatigue Life: Optimized Cobalt and Tungsten ratios provide superior resistance to crack initiation during thermal cycling.
√Global Compliance & Certification: Fully compliant with SGS, RoHS, and REACH standards, supporting friction-less international trade.
Chemical composition%
Applications of K403 Master Alloy Bar Manufacturer
Wholesale K403 master alloy bar is widely used as the starting material for precision casting of high-temperature components:
- Gas turbine guide blades (service ≤1000°C)
- Turbine rotor blades (service ≤900°C)
- Aero-engine turbine blades and vanes for turbojet, turboprop, turboshaft, and turbofan engines
- Complex precision castings requiring high-temperature strength and dimensional accuracy
- Industrial gas turbines and power-generation hot-section parts
- Other high-temperature structural components in aerospace and energy sectors
CHANGZHOU DLX ALLOY CO., LTD serves as a critical infrastructure node in the global high-performance material supply chain. Since 2002, our 12,000 m² manufacturing ecosystem has focused on bridging the gap between small-batch R&D purity and large-scale industrial requirements. We recognize that for our wholesale partners in the aerospace and energy sectors, reliability is built on two pillars: metallurgical excellence and logistical stability. By maintaining massive VIM capacity and rigid ISO 9001 quality management, we provide a transparent, factory-direct gateway for foundries worldwide, ensuring that every ton of K403 master alloy delivered contributes to a safer and more efficient global thermal infrastructure.
FAQs:
1.What is K403 master alloy bar used for?
It is primarily used as remelt stock for investment casting of gas turbine guide blades (up to 1000°C) and turbine rotor blades (up to 900°C), as well as other high-temperature precision components in aero-engines and industrial gas turbines.
2.What are the main advantages of K403 casting superalloy?
K403 offers high high-temperature strength, good creep resistance, excellent castability for complex shapes, and a relatively economical composition compared with higher-cobalt or more heavily alloyed superalloys.
3.Is K403 suitable for long-term service without coating?
While it has acceptable oxidation resistance, its hot-corrosion resistance is moderate. For extended high-temperature service in corrosive environments, protective coatings are recommended.
4.What form is the master alloy supplied in?
It is typically supplied as vacuum-melted master alloy bars (mother alloy ingots/bars) ready for remelting and precision casting. Custom sizes and specifications can be provided for wholesale orders.
