Detailed Introduction
| Steel Grade (GB) |
Comparison of Grades from Various Countries |
Technical Conditions |
Chemical Composition |
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C |
Cr |
Mo |
V |
S |
P |
Si |
Mn |
Ni |
W |
Al |
Cu |
Nb |
Co |
B |
| 5CrNi4Mo |
Germany (1.2767)
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GB/T 1220-1992 |
0.40 ¦ 0.50 |
1.20 ¦ 1.50 |
0.15 ¦ 0.35 |
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≤0.005 |
≤0.030 |
0.10 ¦ 0.40 |
0.20 ¦ 0.50 |
3.80 ¦ 4.30 |
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1.2767 refers to German GritzMold SteelW.1.2767, a type ofPlastic Mold SteelMaterial, throughOut-of-Furnace Refining(LF)+ Vacuum Degassing (VD)+ElectroslagRemelting Refining(ESR) , with a purer and finer structure, excellentCorrosion Resistance、Polishability, goodWear Resistance、Machinability, excellentSize Stability.
Characteristics
This steel has good wear resistance, high toughness, high hardness, excellent compressive strength, outstanding size stability, excellent corrosion resistance, good polishing and cutting performance, and can easily achieve a mirror finish. It has excellent hardenability, can be air-cooled and hardened, and has excellent machinability.
Main Applications
Heavy-duty high-toughness stamping dies
High-stress injection molds
Heavy-duty cold work tools
Cutting tools
Plastic molds requiring high hardness and high toughness
Processing and Polishing
Under normal conditions (without adding chemicals), the brightness of this steel can reach 90%.
The polishing process is as follows:
1. Use oilstone (from coarse to fine) to grind the surface as follows: #320->800->1200->3000
2. Use sandpaper (from coarse to fine) to grind the surface as follows: #1200->1500->2000->3000
3. Directly polish with #1 diamond paste.
After completing all the above steps, a mirror finish is basically achieved. If any part does not meet expectations, you can redo the steps above, and the problem will be resolved.
Note: When grinding with #1500 and 2000 sandpaper, it is necessary to repeat twice using a cross method.
Due to the high cleanliness of the steel and uniform material, the polishing performance is superior, achieving a high mirror finish.
Note: When polishing, do not apply too much pressure to avoid surface defects.
Product Images
key word:
Hot working mold steel
Cold working mold steel
Plastic mold steel
Forging series
Message Consultation
Service hotline：
Company address
Telephone
Address: No.128 Zhangzhihe Avenue, Dapaishan Village, Xisaishan District, Huangshi City, Hubei Province