Full 6000 series alloys. Two press lines, 4,800 TPA capacity. BIS/ISI and ISO 9001 & 14001 certified. Extruded at Dabaspet, Bangalore since 1974.
Karnataka Metal Company is an aluminium extrusion manufacturer in Bangalore, producing custom and standard profiles in the full 6000 series at its Dabaspet plant.
Hollow, semi-hollow, and solid cross-sections in 7 alloys (6063, 6060, 6061, 6005, 6082, 6351, 6101B), minimum 0.7 mm wall. Die design and manufacture managed in-house; see aluminium profiles.
500+ standard aluminium extrusion profiles in 6063 (T4, T5, T6), including angles and channels and tubes. See aluminium sections for the full range.
Mill finish, anodised (8 colours), or powder coated (Jotun/Interpon, 10-30 year warranty). All surface finishing managed by Karnataka Metal Company as your single supplier.
50,000 sq ft machining facility for cutting, punching, drilling, tapping, and assembly. Machined aluminium components and solar panel frames from the same Bangalore campus.
Alloy composition is verified by German spectrometer at the billet-casting stage, and every batch undergoes dimensional testing with Japanese instruments at the in-house quality lab before dispatch. Manufactured to IS 733:1983 and BIS/ISI standards; ISO 9001:2015 and ISO 14001:2015 certified by TUV.
| Alloy | Strength Class | Key Characteristics | Primary Applications |
|---|---|---|---|
| 6063 | Medium-low | Excellent extrudability, smooth finish, good corrosion resistance. The standard architectural alloy. | Windows, doors, curtain walls, furniture, railings |
| 6060 | Medium-low | Similar to 6063 with even better extrudability. Suited to complex thin-walled shapes. | Complex architectural profiles, intricate cross-sections |
| 6061 | Medium | Higher strength than 6063, good weldability. Structural alloy. | Structural components, automotive, transport |
| 6005 | Medium | Better extrudability than 6061 at comparable strength. | Railway and bus body structures, ladders, utility poles |
| 6082 | Medium-high | Highest strength among common 6000 series alloys. Good machinability. | Heavy-duty structural, bridges, trusses, transport |
| 6351 | Medium-high | High strength with good formability. | Heavy structural profiles, transport, high-load applications |
| 6101B | Medium-low | Optimised for electrical conductivity. | Electrical bus bars, conductors, power distribution |
| Temper | Process | Typical Use |
|---|---|---|
| T4 | As-extruded, naturally aged | Applications requiring maximum formability before final ageing |
| T5 | Air-cooled from extrusion, artificially aged | Architectural, structural, and high-strength applications; preferred where tolerances are tighter, as a slower quench rate minimises distortion. |
| T6 | Air-cooled, artificially aged | Standard temper for architectural, structural, and high-strength applications |
| T66 | Higher strength with corrosion resistance, used sparingly | Typically, 6063 where both strength and corrosion resistance are needed |
| Property | 6063-T5 | 6063-T6 | 6061-T6 |
|---|---|---|---|
| Ultimate tensile strength (min) | 150 MPa | 205 MPa | 260 MPa |
| Yield strength (min) | 110 MPa | 170 MPa | 240 MPa |
| Elongation (min) | 8% | 8% | 8% |
| Cooling method | Air-cooled | Air-cooled | Water quenched |
| Typical use | Standard architectural | Higher-strength architectural | Structural, transport |
| Step | Process | Details |
|---|---|---|
| 1 | Billet casting | 6-tonne casting furnace produces aluminium billets from primary ingots; alloy composition verified by the German spectrometer at this stage |
| 2 | Billet heating | Billets heated to 450 to 500 degrees Celsius for optimal plasticity |
| 3 | Extrusion | Heated billet forced through a steel die under hydraulic pressure (two press lines: 4-inch and 6/7-inch) |
| 4 | Cooling | Air-cooled on the run-out table |
| 5 | Stretching | Profiles stretched to correct any twist or bow and relieve internal stresses |
| 6 | Cutting | Profiles cut to specified lengths |
| 7 | Ageing | Artificial ageing in the in-house ageing furnace to achieve the specified temper |
| 8 | Quality testing | Dimensional testing (Japanese instruments) at the in-house quality lab |
| 9 | Surface finishing | Mill finish, anodising, or powder coating as specified |
| 10 | Packing and dispatch | Dedicated packing area with weigh bridge for accurate billing |
We are not a trader or reseller. Aluminium extrusion profiles are manufactured at our own 50,000 sq ft plant at Dabaspet, Bangalore. The facility includes a 6-tonne casting furnace, two hydraulic press lines (4-inch and 6/7-inch), an ageing furnace, and a dedicated die shop.
7 alloys (6063, 6060, 6061, 6005, 6082, 6351, 6101B) with 4 temper options (T4, T5, T6, T66). Architectural, structural, electrical, or transport requirements covered from one source.
In-house die shop, casting furnace, and two press lines under one roof for some of the shortest lead times on custom aluminium extrusion profiles in South India.
Alloy composition is verified by a German spectrometer at the casting stage, and every batch is dimensionally tested with Japanese instruments at our in-house lab before dispatch. All profiles manufactured to IS 733:1983 and BIS/ISI standards.
From raw aluminium extrusion to finished, surface-treated, machined product under one management. We offer aluminium machining (cutting, drilling, punching, tapping, assembly) and in-house shot blasting, with anodising and powder coating outsourced but fully managed, at the same Bangalore campus.
Processes audited by TUV under ISO 9001:2015 and ISO 14001:2015. All profiles carry the BIS Standard Mark as required under the BIS Quality Control Order effective April 2025.
As an established aluminium extrusion company in Bangalore, Karnataka Metal Company handles custom die designs, standard profiles, and bulk orders. Share your profile drawing for alloy and temper guidance, or visit our retail outlet on A.M Road for standard profiles from ready stock.