Guangzhou Changfeng Steel Co., LTD
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China prehardened special steel for alloy steel plate 718/P20+Ni/1.2738/3Cr2NiMnMo
Company Profile
Guangzhou ChangFeng Steel Co., Ltd is located in Guangzhou city, it was established in 2012, and is an Professional import and export company with ten years experience of selling special steel, which mainly sells plastic die steel, hot work die steel, cold work mould steel, alloy structural steel, bearing steel, tool steel, stainless steel, carbon steel, etc.
We also act on behalf of exporting steels of mainly steel factories in China, including Baogang group, Shagang group, Wenfeng group, Xingcheng group, Dongte group, Daye and so on. We are full of export experience to the market all over the word, such as America, Germany, France, Italy, Turkey, Singapore, Thailand, Malaysia, Vietnam, Taiwan, and Middle-East.
At the same time, We offer the seamless steel pipe, welded carbon steel pipe, GI pipe, and special pipe. Fittings elbow, tee, reducer, cap, lap joint, flanges etc...This is better for our customer to buy the different products from China, while they are saving their time, but they can enjoy in our best serves.
Introduction
718 modified prehardened mirror plastic die steel has good hardenability, uniformity of hardness and mirror polishing property.
It can displace the next generation of imported large cross section prehardened mirror plastic die steels ,such as: 1.2738,p20 etc and the next generation of imported large cross section prehardened plastic die steels.
Steel grade
| Chinese | American | German | Japanese | Swedish |
| GB | AISI | DIN | JIS | ASSAB |
| 3Cr2NiMnMo | P20+Ni | 1.2378 | PDS5S | 718 |
Chemical composition%:
| Grades | C | Si | Mn | P | S | Mo | Ni | Cr |
| 1.2738 | 0.35-0.46 | 0.2-0.4 | 1.3-1.6 | ≤0.035 | ≤0.005 | 0.15-0.25 | 0.9-1.2 | 1.8-2.2 |
| 718/3Cr2NiMnMo | 0.28-0.40 | 0.2-0.8 | 0.6-1.0 | ≤0.030 | ≤0.030 | 0.30-0.55 | 0.8-1.2 | 1.4-2.0 |
| P20+Ni | 0.32-0.40 | 0.2-0.4 | 1.0-1.5 | ≤0.030 | ≤0.035 | 0.30-0.55 | 0.8-1.2 | 1.4-2.0 |
Available Dimensions
steel plate:
continuous casting slab
Thickness:20-150mm,Width:2200mm,Length:2000-8000mm
steel ingot
Thickness:155-300mm,Width:1600mm,Length: 4000-8000mm
steel block
Thickness:300-1000mm ,Width: 800-1600mm,Length: 2000-6000mm
Heating treatment
| Quenching | Tempering | ||||
| Heating Temperature/ºC | Cooling | Hardness/HRC | Heating Temperature/ºC | Cooling | Hardness/HRC |
| 840-870 | Air | ≥50 | 550-640 | Air | 28-36 |
Characteristics
a. Good machining performance
b. Excellent polishability
c. Uniform hardness
d. High hardenability
Application
a. Skin, pear skin, imitation stone etching mold.
b. Transparent plastics such as pencil cases, daily necessities containers, high gloss requirements mold.
c. Particularly suitable for hard rubber (PS) and non-fragmented rubber (ABS) parts.
d. Automobile bumpers, interior parts, refrigerators, air conditioners, etc.
Products Pictures
