Guangzhou Changfeng Steel Co., LTD
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Alloy Steel 1.2738 718H Steel Sheet and Flat Bar (Prehardened HRC 33-37)
Introduction:
2738 is one improved kind of pre- hardened mirror plastic die steel.With the alloy optimization and structure control key technology,
We can guarantee the steel die block has high hardness uniformity, excellent polishing property and machining property with large cross sections in China.
This steel can replace the imported new large cross sectional prehardened plastic die steel such as 1.2738/718HH/P20 modified, etc.
Applications:
Plastic molds for injection compressing and injection molding
TV cabinets, drum mold of washing machine, etc.
Features:
1. Good welding property of prehardened die blocks
2. Good polishing property(high hardness uniformity, hardness fluctuation ≤2hrc
3. Excellent working
4. Extra large cross sections:700mm*1300mm maximum and weighs 20MT for one piece
5. Application hardness:28-36HRC
6. CCT curve for reference
Chemical compositions
| C | Si | Mn | P | S | Cr | Ni | Mo |
| 0.30-0.40 | 0.20-0.50 | 1.00-1.50 | ≤0.010 | ≤0.030 | 1.50-2.00 | 0.80-1.20 | 0.25-0.40 |
Available Size (mm)
| Flat Bar Size(mm) | Round bar Size(mm) | |||
| Thickness | Width | Length | Diameter | Length |
| 21-300 | 155-2200 | 2000-6000 | 20-200 | 2000-6000 |
Mechanical properties
Rb:1095-1115N/mm
Corresponding hardness:35-36HRC
Rb :915-1000N/mm
Corresponding hardness:28-30HRC
Similar grade:1.2738/ASSAB718/AFNOR 40CMND8/DIN 40CrMnNiMo7/AISI P20modified
Delivery Quantiity: Include MOQ
Payment terms: 30% deposit, balance by L/C at sight or T/T.
Delivery Day: For abundant stock, 7-15 days.For customized products, 30-50 days.
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About us:
Guangzhou ChangFeng Steel Co., Ltd. is a professional special steel company, which specialized in exporting mould steel products based in China. With more than 20 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.