Moldmax HH
MOLDMAX HH - BERYLLIUM COPPER
MOLDMAX HH BERYLLIUM COPPER
MoldMAX HH - Beryllium Copper Alloy is the premier copper mold alloy. MoldMax HH - Beryllium Copper Alloy has a hardness and strength comparable with standard tool steel but its thermal conductivity is at four to six times higher. MoldMAX HH Alloy is used for injection mold cores and cavities and blow mold pinch-offs. Its high hardness provides durability in applications where other high conductivity copper alloys fail. MoldMax HH - Beryllium Copper Alloy resists galling against other mold alloys, including itself.
Thông tin chi tiết
GENERAL OF MOLDMAX HH BERYLLIUM COPPER
Moldmax HH is a high-strength beryllium copper mould alloy, imported by Kojako Vietnam Co., Ltd for plastics moulding applications. Its main properties include:
- High thermal conductivity
- Good corrosion resistance
- Good polishability
- Good wear resistance
- Good resistance to galling
- Good machinability
- High strength and hardness
- Excellent weldability
MoldMax HH
Beryllium Copper Moldmax HH is widely used for injection moulding tools or as cores and inserts in steel moulds. When used in steel mould it effectively cools hot spots, reducing or eliminating the need for cooling channels. Beryllium Moldmax HH is available in wrought round and flat section, machined core pins, and welding wire. Beryllium Copper Moldmax HH’s high thermal conductivity, 3 to 5 times better than steel, ensures uniform, rapid heat removal, minimizing part distortion, warpage, poor replication of detail and similar defects. In many cases it can significantly reduce cycle times, even when used in a steel mould just for selected cores and inserts.
Moldmax HH has a good machinability and can be machined with conventional cutting tools. Perform machining wet to avoid breathing metal dust. The cutting data, in following tables, are to be considered as guiding values which must be adapted to existing local conditions. Moldmax HH is delivered in the heat treated condition - additional heat treatment is not normally required. Moldmax HH can easily be welded if good care is taken and good welding practices are followed. The area to be welded should be thoroughly cleaned with a degreasing solvent. The always present oxidized layer should be removed using aggressive brushing, sand blasting or acid pickling immediately prior to the welding.
MoldMax HH - Injection Plastic Molds
PROPERTIES OF MOLDMAX HH - BERYLLIUM COPPER
PROPERTIES OF MOLDMAX HH - BERYLLIUM COPPER |
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Chemical Composition |
Mechanical properties |
Physical properties |
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| %Cu | - | 98.0 | Brinell hardness (HRC max) | 46 | Density (kg/dm3) | 8.25 |
| %Be | 1.8 | 2.0 | Tensile Strength (N/㎟ max) | 1750 | Specific Heat J/(g*K) | 0.1 |
| %Al | - | 0.2 | 0.2% Proof Stress (N/㎟ max) | 1560 | Thermal Expansion 10-6 K | 155 |
| %Co | - | 0.2 | Elongation (%max) | 1 | Thermal Conductivity W/(m*K) | 62 |
| %Si | - | 0.2 | Electrical Conductivity % IACS at 68⁰F | 22 | ||
MoldMax HH - Injection Molds
APPLICATION OF MOLDMAX HH - BERYLLIUM COPPER
The special properties of Moldmax HH beryllium copper alloy make it a suitable mould/ core/insert material for a wide variety of moulding situations but especially where a combination of high thermal conductivity, corrosion resistance and good polishability are needed.
- Blow moulds: pinch offs, neck rings and handle inserts
- Injection mould: moulds, cores, inserts
- Injection nozzles and manifolds for hot runner systems.
- Resistance Spot - Seam welding electrodes
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