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SCI Manufacturing is a full-service die casting facility. Offering aluminum and zinc die castings,
we manufacture miniature to large precision components utilizing hot and cold
chamber die casting technologies. Our knowledge, and experience combined with structured project
management, supports customers
from concept, through rapid prototyping, tooling and pre-production, into full-scale manufacturing.
(A380) Aluminum Benefits
• Withstands high operating temperature
• Outstanding corrosion resistance
• Lightweight
• Very good strength and hardness
• Good stiffness and strength to weight ratio
• Excellent EMI shielding properties
• Excellent thermal conductivity
• Good finishing characteristics
• Fully recyclable
• Aluminum die cast alloys are secondary alloys 100% derived from primary aluminum scrap
(A380) Aluminum Alloy Specifications
| Specification |
|
| Commercial |
380-3% |
| SAE |
306 |
| ASTM |
3A380.15 |
| Federal |
QQ-A-591D-11 |
(A380) Aluminum Alloy Composition
| Elements |
Metric |
| Aluminum, Al |
Balance |
| Cadmium (max) |
- |
| Copper, Cu |
3.0-4.0 |
| Iron, Fe |
2.0 |
| Lead (max) |
- |
| Magnesium, Mg |
0.10 |
| Manganese, Mn |
0.50 |
| Nickel, Ni |
0.50 |
| Silicon, Si |
7.5-9.5 |
| Tin, Sn |
0.35 |
| Zinc, Zn |
3.0 |
(A380) Aluminum Alloy Properties
| Properties |
Metric |
| Tensil Strength (ksi) |
47 |
| Yield Strength (ksi) |
23 |
| Elongation (% in 2") |
3.5 |
| Shear Strength (ksi) |
28 |
| Fatigue Strength (ksi) |
20 |
| Specific Gravity |
2.71 |
| Lbs. per Cubic Inch |
0.098 |
(A380) Aluminum Alloy Characteristics
| Characteristics |
|
| Machinability |
Good |
| Castability |
Excellent |
| Corrosion Resistance |
Fair |
| Anti-Soldering |
Excellent |
| Polishing |
Fair |
| Anodizing Appearance |
Fair |
| Preasure Tightness |
Good |
| Bearing Wear |
- |
|
(Zamak 3) Zinc Benefits
•High strength & hardness
•Excellent electrical conductivity
•High thermal conductivity
•Low-cost raw material
•High dimensional accuracy and stability
•Excellent thin-wall capability
•Ability to cold form facilitates fastening and joining
•High-quality finishing characteristics
•Outstanding corrosion resistance
•Fully recyclable
(Zamak 3) Zinc Alloy Specifications
| Specification |
|
| Commercial |
3 |
| SAE |
J468b 903 |
| ASTM |
B86-83 Z33521 |
| Federal |
QQ-Z-363B AG40A |
(Zamak 3) Zinc Alloy Composition
| Elements |
Metric |
| Aluminum, Al |
3.5-4.3 |
| Cadmium (max) |
0.004 |
| Copper, Cu |
0.25 |
| Iron, Fe |
0.10 |
| Lead (max) |
|
| Magnesium, Mg |
0.02-0.05 |
| Manganese, Mn |
- |
| Nickel, Ni |
- |
| Silicon, Si |
- |
| Tin, Sn |
0.003 |
| Zinc, Zn |
Balance |
(Zamak 3) Zinc Alloy Properties
| Properties |
Metric |
| Tensil Strength (ksi) |
41 |
| Yield Strength (ksi) |
- |
| Elongation (% in 2") |
10 |
| Shear Strength (ksi) |
31 |
| Fatigue Strength (ksi) |
6.9 |
| Specific Gravity |
6.6 |
| Lbs. per Cubic Inch |
0.240 |
(Zamak 3) Zinc Alloy Characteristics
| Characteristics |
|
| Machinability |
Excellent |
| Castability |
Excellent |
| Corrosion Resistance |
Good |
| Anti-Soldering |
Good |
| Polishing |
Excellent |
| Anodizing Appearance |
Good |
| Preasure Tightness |
Good |
| Bearing Wear |
- |
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