PROGRESSO
Product Overview
Barra tonda in alluminio 6061 is a precipitation-hardened aluminum-magnesium-silicon (Al-Mg-Si) alloy rod, one of the most versatile and widely machined aluminum products in the industry. It combines medium-to-high strength, excellent machinability, good weldability, and superior corrosion resistance. Our 6061 aluminum round bars are available in T4, T6, T651 and T6511 tempers, produced per ASTM B211, GB/T 3191, IN 755 and JIS H4040 standards, with diameters from 3 mm to 500 mm and custom lengths.
Composizione chimica (%), ASTM B211 / GB/T 3190
Al (Alluminio): 95.8 – 98.6 (balance)
Mg (Magnesium): 0.8 – 1.2
E (Silicon): 0.4 – 0.8
Cu (Rame): 0.15 – 0.40
Cr (Chromium): 0.04 – 0.35
Fe (Ferro): 0.70 max
Zn (Zinc): 0.25 max
Mn (Manganese): 0.15 max
Di (Titanium): 0.15 max
Others Each: 0.05 max, Others Total: 0.15 max
Proprietà meccaniche (Typical Values, Bar)
Temper T4 (Solution Heat Treated & Naturally Aged): Resistenza alla trazione 180-240 MPa, Forza di snervamento 110-170 MPa, Allungamento 14-18%
Temper T6 (Solution Treated & Artificially Aged): Resistenza alla trazione 290-310 MPa, Forza di snervamento 240-290 MPa, Allungamento 8-12%
Temper T651 (T6 + Stress Relieved): Resistenza alla trazione 290-310 MPa, Forza di snervamento 240-290 MPa, Allungamento 8-12%
Temper T6511 (T6 + Stress Relieved, Extruded): Resistenza alla trazione 290-310 MPa, Forza di snervamento 240-290 MPa, Allungamento 8-12%
Durezza: 95 HB (T6)
Resistenza al taglio: 205 MPa (T6)
Forza della fatica: 96 MPa (T6, at 5×10⁸ cycles)
Proprietà fisiche
Densità: 2.70 g/cm³ (0.0975 lb/in³)
Melting Point: 582-652° C. (1080-1205° f)
Conduttività termica: 167 W/(m·K) at 25°C (T6)
Conduttività elettrica: 43% IACS (T6)
Electrical Resistivity: 4.0 × 10⁻⁸ Ω·m
Thermal Expansion Coefficient: 23.6 × 10⁻⁶/K (20-100° C.)
Modulo di elasticità: 68.9 GPa (10,000 ksi)
Poisson Ratio: 0.33
Specifications
Standard: ASTM B211 (rolled/drawn), ASTM B221 (extruded), GB/T 3191, IN 755-2 / 755-3, JIS H4040, QQ-A-225/8
Diameter: 3 mm – 500 mm (0.12″ – 19.7″)
Lunghezza: 1 m – 12 m (custom cutting available)
Temperare: O, T4, T6, T651, T6511
Tipo: Extruded bar, rolled bar, drawn bar, precision ground bar
Finitura superficiale: Finitura al mulino, Luminoso, Drawn, Precision ground (h7-h9), Anodized
Tolerance: Diameter: ±0.1mm (drawn) to ±1.0mm (extruded), Straightness: ≤1mm/m
Special: Precision ground bars with h7/h8/h9 tolerance for machining centers
Caratteristiche principali & Vantaggi
- Excellent machinability – ideal for CNC turning, milling, and drilling
- Medium-to-high strength – reliable for structural and load-bearing parts
- Good corrosion resistance – suitable for indoor and outdoor applications
- Excellent weldability – fully weldable with 4043 O 5356 filler
- Heat treatable – T6 temper provides maximum mechanical properties
- Good dimensional stability – stress-relieved tempers available
- Consistent roundness and straightness – tight tolerances
- Leggero – reduces component weight in machinery and transport
- Good anodizing response – attractive protective finishes
- Available in precision ground condition – ready for high-precision parts
Applicazioni
- Machinery – shafts, spindles, rollers, pin, marcia, valve stems
- Automotive – drive shafts, suspension parts, fasteners, spacers
- Fasteners – bolts, viti, studs, rivetti, noccioline
- Costruzione – structural members, parentesi, anchors, fittings
- Aerospace – non-critical structural parts, parentesi, fittings
- Marino – propeller shafts, fittings, hardware
- Elettronica – heat sink rods, antenna elements, support rods
- Tooling – mold components, jigs, fixtures, mandrels
- Sports equipment – archery components, climbing gear, poles
- General engineering – bushings, standoffs, tasselli, custom machined parts
Quality Control & Testing
Every batch of our 6061 aluminum round bars undergoes strict quality control:
Chemical Analysis: Spectrometer verification of Mg, E, Cu, Cr content
Mechanical Testing: Tensile test, yield strength test, elongation test, hardness test (per temper)
Heat Treatment Verification: Hardness and conductivity testing to verify T6 treatment
Dimensional Inspection: Diameter, roundness, straightness, and length checks
Surface Inspection: Visual inspection for scratches, pits, laps, and die marks
Ultrasonic Testing: UT inspection for internal soundness (available on request)
Documentation: Mill Test Certificate (MTC), material traceability, conformity certificate
Confezione & Spedizione
Confezione: Standard export packaging – bars bundled with steel straps or polypropylene straps, protective paper or film wrapping, wooden pallets or crates for heavy bundles; individual protective tubes for precision ground bars
Marking: Lega, temperare, size, heat number, standard, manufacturer logo
Trade Terms: FOB, CIF, CFR, EXW, DDP
Payment: T/T (30% deposit, 70% prima della spedizione), L/C at sight, Western Union, PayPal (sample orders)
Tempi di consegna: Standard sizes in stock – 3-7 giorni; Custom sizes – 15-30 giorni
MOQ: 300 kg for standard sizes; custom orders negotiable
Loading Port: Qingdao, Shanghai, Tianjin, Ningbo, or as requested
Perché scegliere noi
With over 15 years of experience in aluminum manufacturing and export, we are a trusted supplier of 6061 aluminum round bars to machinery manufacturers, fastener producers, and automotive companies in more than 50 countries. Our factory is equipped with modern extrusion, drawing, heat treatment, and precision grinding lines, ensuring consistent quality and tight dimensional accuracy. We maintain large inventory of standard sizes and tempers for immediate delivery, and our experienced team can provide technical consultation and customized solutions for your specific applications. Contact us today for a competitive quote!
