1.2738 P20 + Ni Pre-hardened Steel Flat Bar For Large Size Injection Mold

1.2738 Steel Flat Bar is a mold steel material produced according to the German DIN standard.

It has relatively superior mechanical properties and good workability in similar grades of steel.

It is mainly used for the processing and production of hot-working molds, of which plastic molds are the most widely used.

In addition, the special pre-hardened steel to the factory when it has a good hardness, can reduce the normal mold processing and heat production process, improve economic efficiency.

Equivalent grades

Chemical Composition(%)

Hardness: Pre-hardened 33-37 HRC

Available size(mm)

Recommend heat treatment

Applications

For large, precisionk high polishing plastic moulds, such as car accessories, household appliance, electromic and audio-video products.

1. Dermatoglyphics, pear skin pattern, imitation stone pattern etching.
2. Transparent plastic, such as stationery boxes, daily necessities containers high gloss more requirements.
3. Especially suitable for hard plastic (PS) and no plastic pieces (ABS) parts.
4. Car bumpers, interior parts, refrigerators, air conditioners and other large production requirements of large mold.

Features

1) Widely used plastic mould steel with excellent comprehensive mechanical properties, high hardenabiliy with good polishability.

2) To be used directly after pre-hardening, which can guarantee good usability and avoid deformation after heat treatment.

Delivery condition

EF or ESR, Hot rolled or forged, black surface or milling, hardened or tempering to 33-37HRC

The pre-hardened steel has good polishing properties and is usually polished with alumina or gypsum. The first is the rough throw, and then use more and more fine abrasive polishing, abrasive polishing for each change direction, the final polishing time should not be too long, otherwise it will affect the mold surface roughness.

Nitriding can increase the mold surface hardness, improve wear resistance and corrosion resistance. Although the steel has been pre-hardened, but can still heat treatment to improve the hardness.

Guangzhou ChangFeng Steel Co., Ltd. is a professional special steel company, which specialized in exporting mould steel products based in China.With twenty years experience in special steel industry, our main products are Plastic Mould Steel, Hot Work Mould Steel, Cold Work Mould Steel, Alloy Structural Steel, Tool Steel, Stainless Steel, Carbon Steel and Forged Block.

To ensure provide high quality products to customers, we have close cooperation with many Chinese first class special steel enterprises, including Baosteel Group, Dongbei Special Steel, Changcheng Special Steel, Hongsheng Heavy Industry, Xingcheng Special Steel, Daye Special Steel. We have thousand tons of stock materials in our own factory and also can provide processing services to customers. We are full of export experience for many years, the product covers America, Germany, France, Italy, Turkey, Singapore, Thailand, Malaysia, Vietnam, Taiwan, and Middle-East.

After years of development, the company has established a complete quality management and export service system. We have a group of experienced and competent elites and is capable of offering the best service to clients. Our company equips with large-sized Vertical saw machines, Horizontal saw machines, Milling machines, Grinding machines and other advanced equipments to provide customers with cutting and other processing services. All the products should be inspected the metallographic analysis, hardness, ultrasonic flaw detection and other strict inspection processes, which meet the standards of DIN, AISI, JIS and GB to ensure their function and quality.

Our company keeps the principle of “sincerely cooperation, endless striving for perfection”. We desire to establish the long-term mutual beneficial and win-win relationship with clients all over the world.