/ P21 / B40 Plastic Mold Steel Plate Pre - Hardened HRC37-43 ISO SGS

/ P21 Pre-Hardened with HRC37-43 Plastic Mold Steel Plate

is a pre-hardened plastic mold steel.Factory hardness can reach HRC37-43.
Have a good polishing performance and carving, good electrical discharge.Use in the mirror polishing mold, auto parts discharge Processing die.The thickness of not more than 2MM thin sheet, efficient blanking die, punching die and embossing mold, all kinds of scissors, mosaic blade, woodworking blade, thread rolling and wear slider, cold heading die, thermosetting resin Forming mold, deep drawing die, cold extrusion die.


Grade: , P21

Hardness: 37-43HRC


1. Chemical composition:

2. Specification:

3. Features:
1), prehardened steels,Without any heat treatment(state as delivered,age hardening:HRC37~42ºC
2),The most suitable for mirror polishing machining of hardened steel,Have good electro discharge machining features;
3), Frist-rate after processing the surface,Can replace engraved processing;
4), In the discharge machining (edm)Surface hardness does not increase, can simplify subsequent processing operations;
5), Good weldability, Chip table do not hardening,Can make the subsequent process is simple;
6), Good toughness and excellent mechanical properties, reduce worry rupture, etc;

4. Application:
Commonly used in mirror polishing mold, dust proof, filter plate of the television, cosmetics boxes, precision wrinkles processing mould, office automation equipment, auto parts electro discharge machining mould;
1,) Thin plate thickness is not more than 2 mm, efficient and blanking die, punching die and stamping die;
2), Thread rolling moulding and wear-resisting slider;
3), Deep drawing forming die, cold extrusion dies;

5. Recommend heat treatment:

6. Technical service:
Surface treatment of die and mould vacuum heat treatment (nitrogen and oxygen, carbon and nitrogen, carburizing, nitriding)

7. Our service for you

Pre-sale service
1) Sample can be offered with sample charge can courier fee by buyer's side;
2) We have full stock, and can deliver within short time. Many styles for your choices;
3) Good Quality + Factory Price + Quick Response + Reliable Service, is what we are trying best to offer you;
4) All of our products are produce by our professional workman and we have our high-work-effect foreign trade team, you can totally believe our service.

After you choose
1) We will count cheapest shipping cost and make invoice to you at once;
2) Check quality again, then send out to you at 1-2working day after your payment;
3) Email you the tracking no, and help to chase the parcels until it arrive you.

After-sale choose
1) We are very glad that customer give us some suggestion for price and products;
2) If any question, please contact with us freely by e-mail or telephone.

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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.