6061-T6 Aluminum Rectangular Bar Equivalent Grades
6061-T6 Aluminum Rectangular Bar is internationally recognized and supplied under multiple standards. The alloy is commonly identified by its UNS designation and is widely accepted for industrial and engineering applications.
Equivalent Grades of 6061-T6 Aluminum Bar
| Standard | Designation |
|---|---|
| ASTM/ASME | Aluminium 6061-T6 Bar |
| UNS | A96061 |
| DIN | - |
GNEE, a Chinese supplier of aluminum products, manufactures and supplies UNS A96061 (AA 6061-T6) aluminum bars in rectangular, round, square, hex, and customized profiles.
UNS A96061 Rod Material Specification
| Dimensions | ASTM, ASME, AMS |
| Specifications | ASTM B211, AMS 4115, 4116, 4117, 4128, AMS-QQ-A-225/8 & ASTM B221, AMS4150, 4160, 4161, AMS-QQ-A-200/8 |
| Alloy | 6061 – T6 |
| Size | 1/4" Dia – 16" Dia |
| Form | Square , Round , Hex , Flat, Wire In Black & Bright Finish |
| Length | Random, Fix & Cut Length |
| Finish | Bright, Polish & Black |
Physical Properties of 6061-T6 Aluminum Bar
The 6061-T6 aluminum alloy offers an excellent balance of low weight, thermal efficiency, and structural strength, making it suitable for demanding environments.
6061-T6 Aluminum Physical Properties
| Property | Value |
|---|---|
| Density | 2.70 g/cm³ |
| Melting Point | 582 °C |
| Thermal Expansion | 23.4 × 10⁻⁶ /K |
| Modulus of Elasticity | 69 GPa |
| Thermal Conductivity | 170 W/m·K |
| Electrical Conductivity | 43% IACS |
Thermal Properties of 6061-T6 Aluminum T-Bar
6061-T6 Aluminum T-Bar demonstrates stable thermal behavior across a wide temperature range, which is critical for structural and mechanical applications.
6061-T6 Aluminum Thermal Characteristics
| Property | Metric | Imperial |
|---|---|---|
| CTE at 20°C (68°F) | 23.6 µm/m | 13.1 µin/in-°F |
| CTE at 250°C | 25.2 µm/m-°C | 14 µin/in-°F |
| Specific Heat Capacity | 0.896 J/g-°C | 0.214 BTU/lb-°F |
| Thermal Conductivity | 167 W/m-K | 1160 BTU-in/hr-ft²-°F |
| Melting Range | 582 – 652 °C | 1080 – 1205 °F |
| Solidus Temperature | 582 °C | 1080 °F |
| Liquidus Temperature | 652 °C | 1205 °F |
Electrical Properties of ASME SB 211 AA6061-T651 Bright Bar
The ASME SB 211 AA6061-T651 Bright Bar offers consistent electrical performance, making it suitable for conductive and structural components.
6061-T651 Aluminum Electrical Property
| Property | Value |
|---|---|
| Electrical Resistivity | 3.99 × 10⁻⁶ ohm-cm (typical at 68°F) |

Manufacturer of 6061-T6 Aluminum Bars – GNEE
GNEE is a professional manufacturer and exporter of 6061-T6 aluminum hex bars, square bars, cold-drawn bars, forged bars, and polished bars. All products are supplied in accordance with ASTM B211, ASME SB 211, and related international standards, offering reliable quality and competitive pricing.
Tolerances of AL 6061-T6 Cold Drawn Bars
Dimensional accuracy is critical for precision machining. 6061-T6 aluminum cold-drawn bars are produced with strict tolerance control.
Tolerances for UNS A96061 Rods (Cold Drawn)
Round Bars
| Diameter Range (mm) | Permitted Variation (mm) |
|---|---|
| ≥ 6 to ≤ 18 | +0 / −0.070 |
| > 18 to ≤ 30 | +0 / −0.085 |
| > 30 to ≤ 50 | +0 / −0.100 |
| > 50 to ≤ 80 | +0 / −0.120 |
| > 80 to ≤ 100 | +0 / −0.140 |
Flat Bars-Thickness
| Thickness (mm) | Permitted Variation (mm) |
|---|---|
| < 18 | +0 / −0.110 |
| > 18 to ≤ 30 | +0 / −0.130 |
| > 30 to ≤ 50 | +0 / −0.250 |
| > 50 to ≤ 80 | +0 / −0.350 |
Flat Bars-Width
| Width (mm) | Permitted Variation (mm) |
|---|---|
| < 18 | +0 / −0.110 |
| > 18 to ≤ 30 | +0 / −0.130 |
| > 30 to ≤ 50 | +0 / −0.160 |
| > 50 to ≤ 80 | +0 / −0.190 |
| > 80 to ≤ 100 | +0 / −0.220 |
| > 100 to ≤ 130 | +0 / −0.350 |
| > 130 to ≤ 160 | +0 / −1.00 |
| > 160 to ≤ 320 | ± 1.00 |
Square and Hex Bars
| Across Flats (mm) | Permitted Variation (mm) |
|---|---|
| ≥ 6 to ≤ 18 | +0 / −0.090 |
| > 18 to ≤ 30 | +0 / −0.110 |
| > 30 to ≤ 50 | +0 / −0.130 |
| > 50 to ≤ 80 | +0 / −0.160 |
| > 80 to ≤ 105 | +0 / −0.250 |
Tolerances of Turned 6061-T6 Aluminum Flat Bar (BS 970-3)
Turned AA 6061-T6 aluminum flat bars are supplied with controlled dimensional variations suitable for precision applications.
Turned 6061-T6 Aluminum Round Bar Diameter Tolerances
| Diameter (mm) | Permitted Variation (mm) |
|---|---|
| ≥ 6 to ≤ 18 | +0 / −0.070 |
| > 18 to ≤ 30 | +0 / −0.085 |
| > 30 to ≤ 50 | +0 / −0.100 |
| > 50 to ≤ 80 | +0 / −0.120 |
| > 80 to ≤ 120 | +0 / −0.140 |
| > 120 to ≤ 180 | +0 / −0.160 |
| > 180 to ≤ 250 | +0 / −0.185 |
| > 250 to ≤ 315 | +0 / −0.210 |
| > 315 to ≤ 400 | +0 / −0.230 |
| > 400 | +0 / −0.250 |
Precision 6061-T6 Aluminum Threaded Rod Tolerances
BS 970-3 Precision Tolerance Classes
| Diameter Range | Class A | Class B | Class C |
|---|---|---|---|
| ≥ 6 mm to < 75 mm | 0.05 mm | 0.025 mm | 0.013 mm |
ISO H-Series Tolerances for Cold Drawn 6061-T6 Aluminum Rod
Cold-drawn 6061-T6 aluminum rods are available in ISO "H" tolerance classes (h5 to h12), ensuring suitability for high-precision mechanical assemblies across a wide diameter range.
Applications and Supply of 6061-T6 Aluminum Bars
Due to its high strength-to-weight ratio, corrosion resistance, weldability, and machinability, 6061-T6 aluminum bars are widely used in:
Structural and architectural components
Automotive and transportation systems
Aerospace fittings
Machinery parts
Precision engineering and fabrication
GNEE supplies 6061-T6 polished bars, cold-drawn bars, precision rods, rectangular bars, and welding rods directly from stock, with customizable sizes and fast global delivery.
For technical details, datasheets, pricing, or a complete product catalog, please contact GNEE, your reliable partner for high-quality 6061-T6 aluminum bar solutions.

