Stamping Parts design guidelines The materials that make up metal stamped parts are as diverse as the stamped parts themselves. From hot-rolled mild steel to advanced high-strength alloys, there are many sheets and strips to choose from, which respond well to metal stamping and forming. However, prices and availability can vary widely and can affect the cost and delivery of metal stampings. When selecting an alloy and specifying the physical properties of the material, factors beyond pure engineering requirements should be considered.

Tolerance range
The most common steel grades are available in standard gauge thickness and tolerances. These sizes are often easily available as stock items and are often the best choice when cost and delivery are the main factors.

Specifying a more custom thickness or slope introduces some limiting factors. Rolling mills work with main coils, so they typically have a minimum order volume in the range of 40,000 pounds. If much less material is needed to produce a metal stamping order, the steel warehouse can search its inventory to find materials that may be exactly within the specified tolerances, but this makes availability different by order. Custom materials can be purchased from companies that specialize in re-rolling a small number of products, but the cost can increase exponentially.

Chemical and physical properties
Over-specified alloys are one of the biggest factors that increase the cost of metal stamping. Many different alloys can be produced for both ferrous and non-ferrous materials, but in addition to thickness tolerances, this less common alloy will be custom manufactured by the rolling mill and will only be available in large quantities. You can find someone who offers the same product to another customer. Like non-standard thicknesses, this can be a success or a failure, depending on the requirements of larger customers and delivery schedules.

The good news is that modern steelmaking processes have greatly improved the quality and consistency of materials. The strength, chemical and physical properties inherent in common alloys are inherent to today's demanding metal stampings without resorting to custom specifications. Larson Tool works with our customers from the earliest stages of design to find the best and most cost-effective specifications for their applications.