Pre-hardned Hot Rolled Special Alloy Steel Plate 1.2311 / P20

► Similar grades: DIN 1.2311 / AISI P20 / JIS PDS-3 / GB 3Cr2Mo

► Available size(mm):

► Introduction:

P20 mould steel is a common alloy tool steel which usually supplied in QT condition. The 1.2311 steel can give an excellent polished finish. DIN 40CrMnMo7 tool steel is one of the most widely used material for machine cut plastic moulds. This grade also provides excellent wear resistance.

► Chemical Composition(%):

► Features:

1, Good hardness uniformity and polishing property,good machining properties.
2, Good integral machanical performance under high temperature.
3, Good heat-resistance and fatigue-resistance.
4, Pre-hardened to HRC30-36, can be directly used for mould processing, shorten the construction period.
5, High putity and homogeneous structure of China's biggest ESR production base for its strict requirement in the whole process of exploitation, smelting, vacuum degassing, ESR, forging, annealing, inspection.

► Recommend heat treatment:

► Applications:

1, Plastic molds for injection compressing and injection molding.
2, TV cabinets,drum mold of washing machine,etc.
3, Often used in the manufacture of television cabinet, washing machine, refrigerator inner shell, buckets, etc.
4, Main components of overloading mold.

► Delivery condition:

Hot rolled or forged, black surface, pre-hardened or tempering to 28-33HRC/30-35HR.

► HEAT TREATMENT of 1.2311 P20 PDS-3 3Cr2Mo

Forging: P20 plastic mould steel are forged at 1093°C (2000°F) down to 899°C (1650°F). Forging below 871°C (1600°F) is not recommended for these steels.

Annealing: Annealing takes place at 760-788°C (1400 to 1450°F) and then the steels are cooled slowly in the furnace at a temperature less than 4°C (40°F) per hour.

Hardening: Heat the steel uniformly to 820-840°C until heated through. Quench in oil.

Tempering: Heat uniformly and soak at the tempering temperature for at least one hour per 25mm of section. Allow to cool in still air.

Product photos:

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.