6061 T6 T4 T651 Aluminum bar Stock Extrusions
Extruded 6061 aluminum round bars are among the most versatile and in-demand products in today’s metal market, widely used across aerospace, automotive, construction, and industrial applications. Available in a range of tempers such as T6, T651, and T4, 6061 aluminum delivers an outstanding balance of strength, corrosion resistance, and machinability—making it a reliable choice for both structural and precision components
Chemical composition of 6061 Aluminum Bar
| Element | Content (%) |
|---|---|
| Aluminum (Al) | 95.8 – 98.6 |
| Magnesium (Mg) | 0.8 – 1.2 |
| Silicon (Si) | 0.4 – 0.8 |
| Iron (Fe) | ≤ 0.7 |
| Copper (Cu) | 0.15 – 0.4 |
| Chromium (Cr) | 0.04 – 0.35 |
| Zinc (Zn) | ≤ 0.25 |
| Titanium (Ti) | ≤ 0.15 |
| Others | ≤ 0.15 (total) |
Mechanical Properties of 6061 T6, T651, T4 Aluminum Bars
| Property | T4 Temper | T6 Temper | T651 Temper |
|---|---|---|---|
| Yield Strength (MPa) | ~145 | ≥ 240 | ≥ 240 |
| Ultimate Tensile Strength | ~240 MPa | ≥ 260 MPa | ≥ 260 MPa |
| Elongation (%) | 10–16% | 8–10% | 8–10% |
| Brinell Hardness | ~60 | 95 | 95 |
| Density (g/cm³) | 2.70 | 2.70 | 2.70 |
| Modulus of Elasticity (GPa) | ~68.9 | ~68.9 | ~68.9 |
T4: Naturally aged after solution heat treatment. Offers good ductility and is easy to form or bend.
T6: Artificially aged after solution heat treatment. Provides maximum strength.
T651: Similar to T6 but stress-relieved by stretching. Ideal for precision machining.
6061 aluminum bar standard
ASTM B211, AMS 4115, AMS 4116, AMS 4117, AMS 4128, AMS-QQ-A-225/8 & ASTM B221, AMS4150, AMS 4160, AMS 4161, AMS-QQ-A-200/8
6061 t6 aluminum bar stock size（including t651, h112）
Alloy | Temper | Dia.(mm) | Length(mm) |
6061 | T651 | φ5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20 21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36 38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53, 54,55,56,57,58,59,60,62,63,65,68, 70,75,80,85,90,95, 100,105,110,115,120,125,130,135,140,145,150,155, 160,165,170,175,180,190,200,210,220 | 2500/3000/6000/12000 |
6061 | T6 | φ5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20 21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36 38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53, 54,55,56,57,58,59,60,62,63,65,68, 70,75,80,85,90,95, 100,105,110,115,120,125,130,135,140,145,150,155, 160,165,170,175,180,190,195,200,205,210,215,220,230, 240,250,260,270,280,290,φ300,310,320,330,340 | 2500/3000/6000 |
6061 | H112 | φ350,360,370,380,390,400,410,420,430,440,450,460, 470,480,490,500,510,520,530,540,550,560,570,580, 590,600,610,620 | 2500 |
FAQs – Common Questions About 6061 Aluminum Bars
Q1: How much does 5-inch 6061 aluminum round bar weight?
A 5-inch diameter solid 6061 aluminum round bar weighs approximately 35.3 lb per foot (52.5 kg/m).
(Formula: π × (D² / 4) × L × ρ, where ρ = 2.7 g/cm³.) and we also have the metal calculation for you to calculate the weight easily.
Q2: How to bend 6061 aluminum bar without cracking?
6061-T6 is relatively hard and can crack if bent sharply. For better bendability, use 6061-T4 condition, perform the bend, then re-age to T6 temper for full strength recovery.
Q3: What is the machinability of 6061-T6 aluminum bar?
6061-T6 offers excellent machinability—it cuts cleanly, holds tight tolerances, and provides a smooth finish, making it a top choice for CNC parts and precision tooling.
Q4: What's the difference between 6061 and 7075 aluminum bar?
7075 offers higher strength but lower corrosion resistance and weldability, while 6061 is more versatile, corrosion-resistant, and suitable for structural, marine, and general-purpose uses.
