Stamping is a metal-forming process that converts flat metal sheets into specific functional shapes. It involves punching the sheet metal by placing it into a die. Stamping can shape countless metals and alloys, such as aluminum, copper, steel, brass, titanium, and zinc.
However, the material capabilities might differ from one stamping service provider to another. For example, a leading manufacturer like Prolean can provide 50+ material options, whereas some medium-size companies might only offer 10 to 20 common materials.
Let’s discuss the metal stamping material capabilities in detail.
Steel Metal Stamping
Steel and its alloys are the most common materials in sheet metal fabrication. Different steel types and grades are also popular in stamping projects.
Predominantly, two types of steel are common for sheet metal stamping: cold-rolled steel and Stainless steel.
- Cold Rolled Steel
As the name suggested, it is a steel rolled at room temperature, below its recrystallization temperature. The cold-rolled steel provides an excellent surface finish and superior dimensional accuracy.
But, the drawback is that cold-rolled steel is more expensive than hot-rolled steel due to the additional processing cost. The standard grades of cold-rolled steel are CR1010, CR1020, CR1045, and CR1075.
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- Stainless Steel
Stainless steel is an iron, chromium, nickel, and other elements alloy. Combining these metals facilitates superior strength, resistance to corrosion, and other properties. Consequently, stainless steel stamping parts can withstand harsh and chemical environments. So, it is ideal for food processing, medical devices, and outdoor applications.
Table: Common Grades of Stainless Steel for Stamping
| 304 | The most common grade with good corrosion resistance and weldability. |
| 316 | This grade contains molybdenum, which improves corrosion resistance against chlorides. So, 316 fits best for marine applications. |
| 410 | A martensitic grade with high strength, hardness, and moderate corrosion resistance. |
| 430 | A ferritic grade with good corrosion resistance and formability. |
Metal Stamping Tool and Parts
Aluminum Stamping
What makes aluminum best for stamping parts? It’s lighter than other metals and has a higher strength-to-weight ratio. Additionally, aluminum’s formability is advantageous in stamping, allowing for complex applications in medical, automotive, aerospace, electronics, and other sectors.
The following are the ordinary aluminum grades suitable for stamping;
| Steel Grade | Description |
| Steel 1100 | Highly malleable and suited for complex forming. |
| Steel 2024 | Aerospace grade steel, high strength |
| Steel 3003 | Excellent weldability and formability make it suitable for tanks and other non-pressure applications. |
| Steel 6061 | A balance of strength, corrosion resistance, and weldability. |
2024 is known for its high strength, and it is used in aerospace applications where durability is critical.
It offers good strength and is commonly used in highly corrosion-resistant. So, it is suitable for marine environments.
Copper Stamping
Copper alloys stand out for their electrical and thermal conductivity. The malleable nature of copper also facilitates easy forming during the stamping process. Therefore, copper-stamped parts are popular in electrical and heating applications. Copper is an antimicrobial metal, which means it is compatible with medical and architectural applications.
Table: Copper Grades suitable for Stamping
| Copper Alloy/Grade | Application | Key Feature |
| C11000 | Electrical components | High electrical conductivity |
| C26000 | Decorative items, architecture | Good corrosion resistance |
| C51000 | Springs, contacts | High fatigue resistance |
| C70600 | Marine environments | Excellent corrosion resistance |
| C71500 | Heat exchangers, condensers | Good resistance to seawater |
| C93200 | Bearings, gears | Good wear resistance |
Metals and Alloys Compatible with Sheet Metal Stamping
Stamping can shape numerous metals and alloys besides steel, aluminum, and copper. Here is the list:
- Titanium
- Nickel
- Brass
- Bronze
- Zinc
- Magnesium
- Inconel
- Monel
- Hastelloy
- Beryllium Copper
Summing Up
Overall, metal stamping materials have diverse capabilities, from creating a small electrical connector to big electrical enclosures. However, the material is the key as it impacts every aspect of the stamping and intended application. Furthermore, understanding the different materials compatible with metal stamping enhances the manufacturing outcomes. It allows for better design and manufacturing decisions.
