Guangzhou Changfeng Steel Co., LTD
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Pre-hardened 1.2738 / P20+Ni / 718 High Carbon Alloy Steel For Injection Mold
Similar grades:
| GB | DIN | AISI | ASSAB |
| 3Cr2NiMnMo | 1.2738 | P20+Ni | 718 |
Introduction:
Pre-hardened 1.2738 / P20+Ni / 718 High Carbon Alloy Steel is one kind of pre-harndened mirror plasitc die steel. With the alloy optimization and structure control key technology, we can gurantee the steel die block has high hardness uniformity, excellent, polishing property and maching property with largest cross sections in China.
Available size(mm):
| Flat Bar Size(mm) | Round bar Size(mm) | |||
| Thickness | Width | Length | Diameter | Length |
| 10-1100 | 155-2200 | 2000-6000 | 20-200 | 2000-6000 |
Features:
1,Good welding property of pre-hardened die blocks
2,Good polishing property(high hardness uniformity,hardness fluctuation≤2HRC)
3,Excellent working
4,Extra large cross sections:700mm×1300mm and weighs 20MT for one piece
5,Application hardness:28-36HRC
Chemical Composition(%):
| C | Si | Mn | P | S | Cr | Mo | Ni |
| 0.30-0.40 | 0.20-0.50 | 1.00-1.50 | ≤0.010 | ≤0.030 | 1.50-2.00 | 0.25-0.40 | 0.80-1.20 |
Applications:
1,Plastic molds for injection compressing and injection molding
2,TV cabinets,drum mold of washing machine,etc.
Recommend heat treatment:
| Quenching | Tempering | ||||
| Heating temperature | Cooling | Hardness/HRC | Heating temperature | Cooling | Hardness/HRC |
| 840-870 | OIL OR AIR | ≥50 | 550-640 | AIR | 28-36 |
Devlivery condition:
EF or ESR, Hot rolled or forged, black surfaceor milling, hardned or tempering to 33-37HRC
Quality Condition:
1. Both end of each bar must be cut
2. Ladle furnanced and vacuum de-gassed
3. Show heat No. on each bar
4. Surface condition the surface of the hot rolled square bar shall befree cracks, scar and wrinkles that affect the use of the billets. In case there is the above-mentioned defect, it shall be remove.
5. The mill test certificate shall show the chemical composition, and it is guaranteed that the chemical composition shall be within the limit stipulated in the contract.
About us:
Guangzhou ChangFeng Steel co., Ltd has a lot of experienced and competent elites and is capable of offering the best service after years of development.
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.
Our all 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 relation with importers all over the word.