Tungsten alloy materials containing tungsten and molybdenum offer the best solution to address issues such as insufficient thermal conductivity, high abrasion resistance, and adhesion to aluminum in die casting molds. These advanced metal materials, known as ANVILOY 1150, ANVILOY 1350, and ANVILOY welding rod, have become widely used in the die casting industry.
The incorporation of tungsten alloys in the casting process yields several benefits, including improved product quality and cost reduction.
The ANVILOY series, designated by the North American Die Casting Association (NADCA), represents a range of tungsten alloys that are highly recommended for promotion and adoption within the industry.
Characteristics of tungsten alloys for die casting industry:
|
WCu |
Density |
Ultimate tensile strength |
Elongation |
Modulus of elasticity |
Hardness |
Resistivity (300K) |
Thermal conductivity λ (300K) |
|
|
g/cm³ |
MPa |
% |
GPa |
HV10 |
μΩ∙cm |
W/mK |
| Anviloy 1050 |
17,0 |
900 |
> 20 |
330 |
300 |
na |
70 |
| Anviloy 1150 |
17,3 |
950 |
> 10 |
360 |
350 |
na |
90 |
| Anviloy 1350 |
18,5 |
800 |
> 10 |
370 |
310 |
10 |
65 |
| Anviloy Weld Rod |
na |
na |
na |
na |
na |
na |
na |
*According SAE: AMS-T-21014 , ASTM B777 , AMS 7725
Applications.
- -Die casting dies
- -Extrusion Dies
- -Hot runner nozzles
- -Vibration and tool chatter reduction
- -Plastic injection molding
- -Injection sleeves
Comparative properties of VILOY 1150 and H-13:
Typical room temperature mechanical properties
ANVILOY 1150 H-13
|
Ultimate tensile strength, psi(MPa) |
140000(965) |
233000(1610) |
|
Yield strength, ±0.2%, psi(MPa) |
125000(862) |
192000(1320) |
|
Elongation, % 2 inches |
3.0 |
13.1 |
|
HRC |
34 |
45 |
|
Modulus of elasticity, psi×106(GPa) |
49.0(338) |
30.5(210) |
High temperature tensile properties
|
Ultimate tensile strength, psi(MPa)at 1000℉(537℃) |
113000(779) |
142000（979） |
|
Ultimate tensile strength, psi(MPa)at 1200℉(648℃) |
105000(724) |
85000（586） |
|
Ultimate tensile strength, psi(MPa)at 1500℉(815℃) |
75000(517) |
20500（141） |
Coefficient of thermal expansion, ℉(℃-1)
|
68-750℉(20-400℃) |
2.52×10-6(4.54×10)-6 |
6.8×10-6(12.2×10)-6 |
|
68-1450℉(20-790℃) |
2.92×10-6(5.26×10)-6 |
7.5×10-6(13.5×10)-6 |
Coefficient of thermal expansion[W/m K]500℃ |
70.2 |
28.4 |
|
Density, ib/in3(g/cm3) |
0.623(17.25) |
0.280(7.76) |
ANVILOY compared to tool steel 1.2343 offers several distinct advantages:
- Higher Thermal Conductivity: ANVILOY has approximately four times higher thermal conductivity than tool steel 1.2343. This allows for faster heat dissipation, reducing the risk of thermal cracks and enhancing overall mold performance.
- Greater Thermal Cracking Resistance: ANVILOY exhibits approximately five times higher resistance to thermal cracking compared to tool steel 1.2343. This ensures improved durability and longevity of the mold, even under high-temperature casting conditions.
- Lower Welding Tendency: ANVILOY has approximately two times lower welding tendency compared to tool steel 1.2343. This means reduced instances of welding or sticking between the mold and the cast material, leading to smoother and more efficient casting processes.
Features and advantages of ANVILOY:
- High Corrosion Resistance: ANVILOY possesses excellent corrosion resistance, effectively reducing the risk of mold degradation due to chemical reactions.
- High Hardness and Strength at High Temperatures: ANVILOY maintains its hardness and strength even at elevated temperatures, ensuring stability in product form and dimensions during casting processes.
- Good Thermal Conductivity and Tempering Stability: ANVILOY’s high thermal conductivity and tempering stability enable efficient heat removal from the mold, reducing the likelihood of thermal cracks and welds.
- Ease of Processing: ANVILOY is easy to process and can be fabricated into various forms, providing flexibility in mold design and manufacturing.
Main products:
- Ejector Pins and Inserts: Tungsten alloy ejector pins, when compared to tool steel, offer faster heat removal, improved lifespan, and reduced adhesion of aluminum to the mold. Inserts are used to minimize wear in specific mold areas and enhance heat removal, resulting in enhanced casting quality and shorter cycle times.
- Inlet: Tungsten alloy inlets utilize a cone-shaped design to facilitate the flow of molten material into the mold. These inlets, commonly used in wheel casting, offer significantly longer service life compared to tool steel materials.
- Mold Enhancement Products: ANVILOY-based mold enhancement products provide several advantages, including reduced corrosion and wear, increased stability, improved dimensional accuracy, rapid heat dissipation, minimized welding, and a reduced angle of release for easy part removal.
In summary, ANVILOY offers superior thermal conductivity, thermal cracking resistance, and reduced welding tendency compared to tool steel 1.2343. Its corrosion resistance, hardness at high temperatures, and ease of processing make it an excellent choice for various mold components, resulting in enhanced mold performance and casting quality.
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