304 Stainless Steel Casting
304 stainless steel is a popular austenitic stainless steel casting alloy with good corrosion resistance. CFS Foundry can cast 304 stainless steel precision components for wide applications, especially in food machinery, architecture industry, automotive industry, and so on.
- Using Investment Casting Process
- Can Customize from Samples or Drawings
- Supporting Various Surface Finishing Types
What is 304 Stainless Steel?
304 stainless steel, also known as CF8 stainless steel, is one of the most widely used stainless steel grades in the world. It is suitable for a variety of metal forming processes, among which, metal casting is a most versatile manufacturing process to create complex 304 stainless steel components. As a typical representative of austenitic stainless steel, it has good corrosion resistance, high strength and other advantages. The composition of 304 stainless steel usually includes 18% chromium and 8% nickel, so it is also called “18/8 stainless steel”.
Chemical Compositions
| Chromium (Cr) | Nickel (Ni) | Carbon (C) | Manganese (Mn) | Silicon (Si) | Phosphorus (P) | Sulfur (S) | Nitrogen (N) | Iron (Fe) |
| 18.0-20.0 | 8.0-10.5 | ≤0.08 | ≤2.00 | ≤0.75 | ≤0.045 | ≤0.030 | ≤0.10 | Balance |
Mechanical Properties
| Stainless Steel | Condition | Tensile Strength (PSI) | Yield Strength (PSI) | % Elongation | Hardness Range or Maximum |
| 304 (CF-8) | Solution Anneal | 70,000 to 80,000 | 40,000 to 50,000 | 35 to 50 | 90 Rb |
The Investment Casting Process of 304 Stainless Steel at CFS Foundry
304 stainless steel is highly valued for its superior castability, making it ideal for manufacturing complex and intricate components through investment casting.
The investment casting process at CFS Foundry for 304 stainless steel castings involves multiple complex steps. First, a wax pattern made from wax injecting into the mold is precisely replicated as the desired part with consistency and accuracy. These wax patterns are then attached onto a sprue to form a tree-like assembly, allowing multiple pieces to be cast at the same time. Next, the wax assembly is repeatedly dipped into ceramic slurry and coated with fine sand to build a robust ceramic shell. After drying, the wax is melted and drained from the shell, leaving a cavity that perfectly matches the original design. This step, known as the “lost-wax” process, ensures dimensional accuracy and intricate detailing.
Once the shell is prepared, molten 304 stainless steel is heated to the required temperature and poured into the cavity. The high-temperature resistance and fluidity of molten 304 stainless steel ensure that the metal fills every intricate detail of the mold. After cooling and solidification, the ceramic shell is broken away, revealing the cast parts. The parts are then cut from the sprue, cleaned, and subjected to various finishing processes, such as heat treatment, machining, or polishing, to achieve the desired mechanical properties and surface finish.
Advantages of 304 Stainless Steel Casting
304 stainless steel has good fluidity, can be quickly poured and filled with complex molds, easy molding, can be easily cast into complex shapes. In addition, its machinability is strong, suitable for post-casting machining, can meet the accuracy requirements of different parts.
As its name suggests, 304 stainless steel is known for its excellent corrosion resistance, including exposure to moisture, acids and a variety of chemicals. This makes cast parts durable and reliable in applications such as food processing, chemical handling and outdoor rain and Marine environments.
304 stainless steel combines the advantages of strength and ductility. Its austenitic construction ensures high toughness and the ability to withstand mechanical stresses and shocks without failure, making it ideal for structural and load-bearing castings.
This material will not easily change its mechanical properties even under high temperature conditions. This characteristic allows 304 stainless steel castings to operate reliably in high heat applications such as exhaust systems, furnace components and heat exchangers, ensuring longevity and consistent performance.
As one of the most commonly used stainless steel casting grades by CFS Foundry, the wide availability of 304 stainless steel ensures a competitive price, making it a cost-effective option for large casting projects without compromising quality. In addition, casting can effectively reduce material waste, making 304 stainless steel castings have a higher price advantage.
This material will not easily change its mechanical properties even under high-temperature conditions. This characteristic allows 304 stainless steel castings to work stably in high-heat applications such as exhaust systems, furnace components and heat exchangers, ensuring longevity and consistent performance.
CFS Foundry: Your Reliable Stainless Steel Casting Supplier
CFS Foundry has been the top stainless steel casting manufacturer for two decades, producing high-quality investment castings to serve various industries ranging from automotive and marine, to valve & pump components. Our state-of-the-art facilities and advanced technologies enable us to provide custom solutions specifically for you. Working closely with each client, we understand their specific requirements, so we deliver products that surpass all their expectations.
At CFS Foundry, we understand the significance of timely delivery and high quality guarantee. Our team of specialists ensures that your project is finished on schedule and within budget. Our quality control procedures guarantee every part produced meets our high quality standards, and advanced techniques & equipment monitor each stage from design through production until delivery.
Besides casting, we also specialize in CNC machining, surface finishing and assembly – providing one-stop-shop solutions for all of your manufacturing requirements.
Are you looking for stainless steel investment casting services in China? Contact CFS Foundry today to request a free quote!
