A206 Aluminum Alloy
With tight deadlines, cost management concerns and quality assurance considerations, we know you need dependable, cost-competitive solutions that save you time without compromising quality. At Warner Brothers Foundry Company, we offer full-service aluminum, brass and bronze casting services to various industries.
With robust performance capabilities, our A206 can elevate your facility’s production and increase efficiency.
A206 Aluminum Alloy Composition
A206 is an aluminum alloy in the 200 series. This aluminum-copper alloy provides better strength than other aluminum grades. Used in applications that require increased machinability, A206 is a robust aluminum that serves many demanding industries.
| Designations & nominal compositions of common aluminum alloys used for sand casting | |||||||
|---|---|---|---|---|---|---|---|
| AA Number | Former AA designations | Former ASTM number | Cu | Mg | Mn | Si | Others |
| A206.0 | … | … | 4.6 | 0.25 | 0.35 | 0.05 (Max) | 0.22 Ti, 0.10 Fe (Max) |
High-Performance Properties of A206
When tested against AMS 4236B A206-T4 (T4) and AMS 4235B A206-T71 (T71) designated casting areas, A206 aluminum delivers exceptional results.
| Typical Aluminum Alloys (a) | Resistance to Corrosion (b) | Typical Mechanical Properties | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AA | Former AA Designation | ASTM Spec. No. | Federal Spec. No. | SAE Alloy No. | Approx. Weight, lb./in.3 | General | Stress Corrosion Cracking | Relative Machinability (c) | Castability (k) | Weldability (Arc) (d) | Ultimate Tensile Strength, ksi (i) | Yield Strength Tension, ksi (e) (i) | Elongation, Percentage in 2 in. (Round Specimen, 1/2" Dia.) (f) (i) | Shear Strength, ksi (g) | Fatigue Endurance Limit, ksi (h) | Brinell Hardness (500-kg Load, 10-mm Ball) (j) | ||||||||||||||
| 206.0-T4 | ... | B26 | QQ-A-601 | … | 0.101 | 2 | B | 3 | 2 | 2 | 51 | 36 | 7 | 40 | 9.5 | 104 | ||||||||||||||
| A206.0-T7 | ... | B26 | QQ-A-601 | … | 0.101 | 2 | B | 3 | 2 | 2 | 63 | 50 | 3 | 37 | 10 | 122 | ||||||||||||||
High Tensile Strength
A206 aluminum has a minimum tensile strength of 50 ksi (345MPa) in the T4 and 54 ksi (370 MPa) in the T71 conditions.
| Typical Tensile Properties for separately cast test bars of common aluminum casting alloys | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alloy | Temper | Tensile strength | Yield strength | Shear strength | Compressive yield strength | Elongation % | ||||||||||||||
| Mpa | Ksi | Mpa | Ksi | Mpa | Ksi | Mpa | Ksi | |||||||||||||
| A206.0 | T7 | 435 | 63 | 345 | 50 | 257 | 37 | 372 | 54 | 11.7 | ||||||||||
Increased Yield Strength
The yield strength of A206 stands at a significant 30 ksi (205 MPa) in T4 and 45 ksi (310 MPa) in T71, while A206.2 aluminum alloy has a higher yield strength.
Good Machinability
Machine complex parts with confidence. This alloy offers high machinability with less than 0.1% silicon.
High Creep Strength
A206 has a robust creep strength at 200-250C. Its creep strength is 40% superior to A356 and A357.
Impressively Lightweight
The alloy has a 50% lower weight than ductile iron.
| Characteristics of common aluminum alloys used in sand casting | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alloy | Fluidity | Resistance to hot cracking | Pressure tightness | Heat Treatment | Strength at elevated temperatures | General corrosion resistance | Machining | Polishing | Anodizing Appearance | Weldability | ||||||||||
| A206.0 | 2 | 2 | 2 | Optional | 3 | 4 | 3 | 3 | 3 | 2 | ||||||||||
Characteristics are comparatively rated from 1 to 5; 1 is the highest or best possible rating.
Other Properties for Top-Quality Castings
Our A206 aluminum alloy exhibits rugged qualities that can elevate the way you do business. Save time and money with premium castings and get it done the first time around. A206 provides you with:
- Superior cycle fatigue: A206-T4 displays a higher fatigue cycle strength than other aluminum alloys.
- Superior corrosion resistance: A206 has been used at sea for decades by the U.S. Army.
- Impressive thermal conductivity: The thermability of A206 is an impressive 121 W/m-K.
- High hardness: A206 has a Rockwell Hardness of 47 and a Brinell Hardness of 120.
- Low thermal expansion: With a rate of 24.7 um/m C ranging from 20-300 degrees Celsius (68-572 Fahrenheit), A206 has low thermal expansion for better stability.
- High shear strength: In T7 condition, A206 has a shear strength of 37.3 ksi.
- Good elasticity: A206 exhibits 10.2 Msi for better bending resistance.
- Robust Poisson’s ratio: Increase resistance to deformation with a Poisson’s ratio of 0.33.
- Significant fracture toughness (K1C): 206-T7 has a fracture toughness of 39.2 ksi sqrt in.
Common Applications
As a robust alloy, A206 is ideal for applications requiring high toughness and where reliability is critical. Whether for aerospace, automotive, electronics, construction or other industries, you can use our A206 aluminum where you need increased strength and good machinability, including:
- Bell housings
- Brake calipers
- Carriers
- Control arms
- Covers
- Gun mounts
- Lightweight housings
- Rear-ends
- Structures
- Steering knuckles
Other Aluminum Specs:
GET STARTED TODAY
If you’re interested in a custom, aluminum solution, get in touch with us today for a quote!
