Casting and forging are metal-forming processes used to create parts and components for various industries, but their similarities stop there. These processes are very unlike each other and are used to create different types of products with varying benefits.
What is casting?
Casting is the process in which molten metal is poured into a die or mold and cooled to form a solid shape. The types of casting vary depending on the molding materials, casting process, and filling pressures.
The most popular types of casting are:
- Die casting
- Investment casting
- Permanent mold casting
- Sand casting
What is forging?
Forging uses dies, pressure, and temperature to form a solid piece of metal into a shape.
There are several different classifications of forging including:
- Temperature, including hot, warm, or cold forging
- Type of Process: open or closed die forging
- Material being used, typically steel, aluminum, brass, or bronze
What’s the difference?
A key difference between casting and forging is the grain flow of the metal. In forging, while the metal is pounded and formed, the grain flow remains unbroken, enabling it to retain its strength. In casting, the metal is melted down, which breaks the grain flow and causes the metal to lose some of its initial strength once it solidifies. As a result, forged metal is less likely to shatter than cast metal.
What are the key advantages of casting vs. forging?
| Feature | Metal Forging | Metal Casting |
| Structural Integrity | Far superior in strength compared to casting | Delivers a primary product that generally requires little to no secondary operations |
| Tolerance | Not well suited to highly complex geometries | Allows for a high level of detail and can adhere to tight tolerances |
| Size | Limited in size and thickness of the metal | Compatible with a wide range of sizes |
| Material | Limited selection of alloys | Compatible with nearly all types of alloys |
| Secondary Operations | Typically requires secondary operations to refine and finish the product to meet exact specifications | Tends to be most cost-effective for medium-to-large production runs |
| Cost | Tends to be most cost effective for medium-to-large production runs | Generally less expensive than forging depending on the casting method used |
Which is better for product manufacturing?
The question of which is better depends on your project’s top priorities. If low-cost, exotic alloys and complex geometries are a priority, casting would probably be the way to go. However, if strength and structural integrity are concerned, forging may be the better option. The best choice really depends on your product’s unique requirements.
Our experts can help you determine the best process for your project. We offer a wide variety of casting and forging options to meet your needs.
Why Choose APD’s OEM Services?
- Proven leader with more than 250 OEM clients.
- Decades of experience, in business since 1986.
- U.S.-based in San Clemente, California.
- Extensive vertical industry expertise.
- ISO 9001 quality certified.
Our Promise to You: A Partner You Can Trust
At APD, we are more than a manufacturing and distribution company; we are your reliable partner committed to your success.
- Trusted Partnership for reliable deliverables.
- Streamlined Processes for operational efficiency.
- Efficiency, Quality and Value for top-notch quality.
- Quality Assurance with regulatory compliance, including ISO 9001.
- Proven Track Record for your peace of mind.
- Industry Leadership with nearly four decades of experience.
Contact APD to discuss the right process for your next project or a quote for your next project, and take advantage of our turnkey services, including on-site design, engineering, prototyping, and logistics.
Request a quote today: https://castingforgingmolding.com/request-a-quote/