Heat Resistant Steel Products
Our customized GX40CrSi28 lost wax castings are precision engineered to meet the most demanding high-temperature applications. Utilizing the investment casting (lost wax) process, we produce complex, near-net-shape components from GX40CrSi28 heat resistant steel (Material No. 1.4776), a premium grade stainless steel known for its exceptional oxidation and scaling resistance up to 1150°C.
Whether you need GX40CrSi28 furnace rollers, radiant tubes, jigs, fixtures, or custom-engineered parts, our foundry delivers castings with excellent dimensional accuracy, smooth surface finish, and consistent metallurgical properties.
Product Advantages
Superior Heat Resistance
GX40CrSi28 (also referred to as 1.4776) contains high chromium and silicon, providing outstanding resistance to oxidation and carburization in cyclic high-temperature environments.
Precision Lost Wax Casting
The investment casting process allows for intricate geometries, thin walls, and tight tolerances, reducing or eliminating the need for machining.
Customization Available
We produce customized GX40CrSi28 investment castings according to your drawings or samples – various sizes, shapes, and finishes are available.
Long Service Life
Our castings maintain mechanical strength and resist thermal fatigue, ensuring durability in furnaces, kilns, and exhaust systems.
Product Information
| Property | Value |
| Material Grade | GX40CrSi28 (1.4776) / ACI HC-type equivalent |
| Chemical Composition (%) | C: 0.3-0.5, Si: 1.5-2.5, Mn ≤1.0, P ≤0.04, S ≤0.03, Cr: 27-30 |
| Tensile Strength (Rm) | 550-700 MPa |
| Yield Strength (Rp0.2) | ≥ 300 MPa |
| Max Service Temperature | Up to 1150°C (2100°F) in air |
| Casting Process | Lost Wax Investment Casting (Precision Casting) |
| Surface Roughness | Ra 3.2 – 6.3 µm (as-cast) |
| Tolerances | CT7-CT9 (ISO 8062) or as per customer specification |
| Heat Treatment | Solution annealing (optional) |
Applications of GX40CrSi28 Heat Resistant Castings
Thanks to its excellent high-temperature properties, GX40CrSi28 lost wax castings are widely used in industries where components are exposed to extreme heat and corrosive gases:
- Heat Treatment Furnaces: Rollers, rails, skids, muffles, retorts, and radiant tubes.
- Petrochemical & Refining: Burner nozzles, dampers, tube supports, and catalyst grids.
- Metal Processing: Annealing covers, quenching frames, and galvanizing bath hardware.
- Glass & Ceramics: Lehr rolls, glass feeder parts, and kiln furniture.
- Power Generation: Coal burner nozzles, ash handling components, and exhaust system parts.
Why Choose Our Lost Wax Casting Foundry?
As a specialized GX40CrSi28 casting supplier, we combine decades of metallurgical expertise with modern manufacturing capabilities to deliver superior quality investment castings.
Custom Casting Expertise
We specialize in custom GX40CrSi28 precision castings – from prototype to mass production. Our engineers work closely with you to optimize designs for castability and performance.
01
Stringent Quality Control
Every heat is analyzed via spectrometer. Dimensional inspections, X-ray, and dye penetrant testing are available upon request.
02
Short Lead Times
Our efficient production process ensures fast turnaround for GX40CrSi28 heat resistant steel castings, even for complex orders.
03
Global Export Experience
We have supplied 1.4776 stainless steel investment castings to clients in Europe, America, and Southeast Asia, complying with international standards (ASTM, DIN, EN).
04
Competitive Pricing
Direct from the foundry, no middlemen – you get high-quality custom GX40CrSi28 lost wax castings at factory-direct prices.
05
Customization Services
We understand that every application is unique. Our customization options include:
- Material: Strictly controlled GX40CrSi28 chemistry to meet your required properties.
- Dimensions: Castings from 0.1 kg up to 100 kg per piece, with complex internal cavities possible.
- Finishing: As-cast, shot-blasted, machined, or polished to your specification.
- Secondary Operations: CNC machining, welding, heat treatment, and assembly available.
Simply provide your 2D/3D drawings (PDF, STEP, IGES) or send us a sample for reverse engineering.
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