Gallery View: Better production techniques maximize materials for stamped metal parts

Customization drives ongoing improvement in manufacturing of stamped metal parts, as custom orders form almost all shipments.

To boost customization capability and enhance market competitiveness, suppliers of stamped metal parts in China are continuing to acquire state-of-the-art production and testing equipment. They are looking to make full use of materials, optimizing product structure and shape, and the manufacturing process itself, to lower production costs.

Huayi International Industry Group Ltd recently introduced fully automatic production equipment to improve manufacturing efficiency and ensure high-quality output. Some suppliers have adopted the product lifecycle management system to shorten product design cycles and reduce labor costs.

Custom-made stamped metal parts make up nearly 100 percent of total shipments from China's domestic manufacturers, with parts made of copper, aluminum and stainless steel accounting for two thirds.

Mainstream products have 0.05 to 6mm thickness and 0.01 to 0.05mm size tolerance. Besides the aforementioned three most popular metals, the materials used include steel, iron, brass, phosphor bronze, carbon steel, titanium and zinc. Finishing processes include powder coating, anodizing, passivation and metal plating. The parts are widely used in home appliances, consumer electronics, computers, and automotive and industrial applications, with electric vehicles and robotics expected to become a hot market in the years to come.

Key materials, including tin, silver and gold, are generally sourced domestically. Companies turn to foreign providers only as required.

Input costs and product prices remained stable in the previous year. This will likely be the trend in the months ahead and through 2021.

±0.01mm tolerance

This stamped part offered by Dongguan HLC Metal Parts Ltd, HLC-0904-2MP, is made of clean polished brass, phosphor bronze, stainless or low-carbon steel or other alloys, and has no burrs. Tolerance is ±0.01mm.

An order of at least 2,000 pieces is required. Delivery is within 15 days.

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Nickel-plated brass

For computers, and telecom, industrial and medical equipment, the HLC-0718-2 from Dongguan HLC Metal Parts Ltd is a stamped nickel-plated brass part.

The maker requires a minimum order of 2,000 pieces. Delivery takes 15 days.

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±0.1mm tolerance

Made of tin-plated steel, the KF-A202 stamped part from Dongguan Kinggold Industry Co. Ltd has ±0.1mm coplanarity tolerance. It meets EIA-481 standards.

The 1,000-piece minimum order has a 7-day delivery lead time.

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Brass & copper

This stamped part with a clean finish from Dongguan Kinggold Industry Co. Ltd, model KGIJ035, is made of brass and copper.

The supplier requires a minimum order of 1,000 pieces. Delivery is within 7 days.

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Copper, iron, carbon steel

Designed for vehicles, machinery and electronic products, this stamped part from Huayi International Industry Group Ltd, model HYPZ1508, uses copper, iron or carbon steel and has zinc, nickel, chrome, silver or gold plating.

The minimum order of 100 pieces has a 7-day delivery lead time.

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For digital electronics

Made of black-painted steel, this stamped part from Huayi International Industry Group Ltd, model HYMS0005, measures 10x8x0.2cm. It is suitable for digital electronics applications.

The minimum order is 100 pieces. Delivery is within 7 days.

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