CNC Machining
Aluminium Material
Aluminium is the most popular material in CNC machining — lightweight, strong, easy to machine, and available in a wide range of alloy grades. At Krsnaye Industrial, we produce precision aluminium parts from prototype to full-scale production with tolerances up to ±0.001 mm.
Request Instant Quote View Alloy Grades±0.001
mm Tolerance
5-Axis
CNC Capability
20+
Years Experience
ISO
9001:2015 Certified
3–7 Days
Prototype Lead Time
Ra 0.4 μm
Best Surface Finish
1 pc – Mass
Batch Size Range
30+
Surface Finish Options
About the Material
Why Aluminium is the #1 CNC Machined Material
During our 20+ years in the CNC machining industry, Krsnaye Industrial handles aluminium more than any other material. Aluminium alloys combine low density with high strength, excellent electrical and thermal conductivity, strong corrosion resistance, and outstanding machinability — making them the go-to choice for engineers across aerospace, automotive, electronics, and industrial applications.
Aluminium machines 3–4× faster than steel, which translates directly to shorter cycle times and competitive pricing for your parts. Whether you need a single prototype or a production run of thousands, we stock and machine all major aluminium alloy grades to meet your exact specifications.
Key Material Properties
| Density | 2.7 g/cm³ |
| Tensile Strength (6061-T6) | 310 MPa |
| Thermal Conductivity | 160–210 W/m·K |
| Melting Point | 660 °C |
| Machinability Rating | Excellent |
| Corrosion Resistance | Very Good (natural oxide) |
| Recyclability | 100% Recyclable |
Material Advantages
Key Properties of CNC Machined Aluminium
Aluminium alloys offer a unique combination of properties that make them the preferred material for CNC machined parts across nearly every industry.
Lightweight & High Strength
Aluminium weighs about one-third as much as steel, yet certain alloys like 7075-T6 achieve tensile strengths exceeding 570 MPa. This high strength-to-weight ratio is critical for aerospace frames, automotive brackets, and structural parts.
Excellent Machinability
Aluminium can be machined at high cutting speeds with low tool wear — typically 3–4× faster than steel. This results in shorter production cycles, reduced tooling costs, and highly competitive part pricing for prototypes and production runs.
Natural Corrosion Resistance
Aluminium naturally forms a protective oxide layer on its surface, providing good corrosion resistance in most environments. Anodizing further enhances this, making aluminium parts suitable for marine, chemical, and outdoor applications.
High Thermal Conductivity
With thermal conductivity of 160–210 W/m·K, aluminium is the ideal material for heat sinks, motor housings, electronics enclosures, and any component where efficient heat dissipation is a design requirement.
Superior Surface Finish
Aluminium achieves excellent surface finishes as low as Ra 0.4 μm. It readily accepts anodizing, bead blasting, powder coating, electroplating, and polishing — for both functional and aesthetic requirements.
100% Recyclable
Aluminium is one of the most recyclable engineering metals. Recycling aluminium uses only 5% of the energy required for primary production, supporting your sustainable manufacturing goals.
Alloy Selection
Aluminium Grades We Machine
We stock and machine all major aluminium alloy grades. Our engineers help you select the right grade based on your strength, corrosion, and machinability requirements.
| Alloy Grade | Tensile Strength | Yield Strength | Hardness (HB) | Machinability | Corrosion Resistance | Typical Applications |
|---|---|---|---|---|---|---|
| 6061-T6 Most Popular | 310 MPa | 276 MPa | 95 HB | Excellent | Very Good | Aerospace frames, bicycle parts, marine fittings |
| 7075-T6 High Strength | 572 MPa | 503 MPa | 150 HB | Good | Average | Aircraft structures, defence, high-stress tooling |
| 2024-T3 Aerospace | 483 MPa | 345 MPa | 120 HB | Good | Poor (coat req.) | Aircraft skins, wing ribs, fuselage structures |
| 6063-T5 | 186 MPa | 145 MPa | 60 HB | Excellent | Very Good | Architectural profiles, door/window frames, extrusions |
| 5052-H32 Marine | 228 MPa | 193 MPa | 60 HB | Fair | Excellent | Marine hardware, pressure vessels, chemical tanks |
| 6082-T6 Structural | 340 MPa | 310 MPa | 100 HB | Excellent | Very Good | Bridges, transport vehicles, structural components |
| 1100 | 90 MPa | 35 MPa | 23 HB | Excellent | Excellent | Heat exchangers, chemical equipment, cookware |
| MIC-6 Tooling | 152 MPa | — | 65 HB | Excellent | Good | Tooling plates, jigs, fixtures, precision bases |
Popular Alloys in Detail
Commonly Used Aluminium Alloys
Detailed descriptions of the most widely used aluminium alloys to help you make the right material selection for your project.
Aluminium 6061
Heat-treatable · Si-Mg Alloy
Aluminium 6061 is by far the most popular alloy used in CNC machining. It is a heat-strengthened alloy of silicon (0.6%) and magnesium (1.0%) that combines excellent machinability with good strength, corrosion resistance, and weldability. It anodizes to a high quality finish.
The T6 temper provides a yield strength of 276 MPa and tensile strength of 310 MPa. Its high thermal conductivity (167 W/m·K) also makes it ideal for heat dissipation components.
Aluminium 7075
High-Strength · Zn-Mg-Cu Alloy
Aluminium 7075 is among the highest-strength aluminium alloys available, achieving tensile strengths of up to 572 MPa in the T6 condition. Developed primarily for aerospace structural applications where maximum strength and minimum weight are critical.
It has lower corrosion resistance than 6061 and typically requires anodizing or chromate conversion for outdoor or marine use.
Aluminium 2024
Aerospace Grade · Cu-Mg Alloy
Aluminium 2024 is a high-strength copper-magnesium alloy widely used in aerospace structures. It offers good machinability and high fatigue resistance — ideal for aircraft fuselage skins, wing ribs, and bulkheads where cyclic loading is a primary concern.
The T3 temper provides a tensile strength of 483 MPa. Often clad or coated for corrosion protection in service environments.
Aluminium 6063
Architectural Grade · Si-Mg Alloy
Aluminium 6063 is widely used for architectural profiles including door and window frames, curtain walls, and decorative extrusions. It offers excellent surface finish quality, low cost, and very good corrosion resistance for visible and anodized applications.
Its exceptional extrudability makes it ideal for complex cross-section profiles. It is heat-treatable and weldable for fabricated assemblies.
What We Offer
CNC Machining Capabilities for Aluminium
Our advanced CNC equipment and experienced team handle all types of aluminium machining — from simple turned parts to complex 5-axis milled components.
01
3-Axis CNC Milling
High-speed 3-axis milling for prismatic aluminium parts — pockets, slots, profiles, and flat surfaces. Suitable for the majority of standard aluminium components with high accuracy and fast turnaround.
02
4-Axis & 5-Axis CNC Milling
Complex contoured aluminium parts, undercuts, and multi-face machining in a single setup. Our 5-axis capability reduces setup errors and improves geometric accuracy for intricate parts.
03
CNC Turning & Lathe
Precision turning for aluminium shafts, bushings, connectors, and rotational components. We achieve roundness within 0.005 mm on diameters from Ø0.5 mm to Ø300 mm with consistent batch quality.
04
Turning-Milling Compound
Our turning-milling compound lathes combine both operations in one machine — ideal for complex aluminium parts requiring rotational and prismatic features, reducing cost and lead time significantly.
05
Drilling, Tapping & Reaming
Threaded holes (M, UNC, UNF, BSP), precision bores to H7/H6 fit, and reamed holes for press or sliding fits — ensuring proper assembly in structural and mechanical assemblies.
06
Prototype to Mass Production
From single-piece prototypes to production runs of thousands of parts. Quotes for up to 1,000 parts with delivery in as fast as 5 working days across India and internationally.
Technical Specifications
Max Milling Size1200 × 600 × 500 mm
Max Turning DiameterØ 300 mm
Best Tolerance±0.001 mm
Surface Finish (Ra)0.4 – 3.2 μm
CNC Axes3, 4 & 5-axis
Thread StandardsM, UNC, UNF, BSP
File FormatsSTEP, IGES, DWG, DXF
Min. Batch Size1 Piece
Lead TimeFrom 5 Working Days
CertificationISO 9001:2015
Post Processing
Surface Finish Options for Aluminium Parts
We offer 30+ surface treatments to improve the appearance, corrosion resistance, hardness, and wear properties of your aluminium CNC machined parts.
Anodizing (Type II & III)
Creates a durable oxide layer. Type II decorative (5–25 μm) and Type III hard anodize (25–75 μm). Accepts colour dyeing for visual applications.
Sandblasting / Bead Blasting
Produces a uniform matte texture, removes machining marks, and improves visual uniformity. Commonly used before anodizing for a consistent base finish.
Chromate Conversion (Alodine)
Thin chemical film that preserves electrical conductivity while improving corrosion resistance and paint adhesion. Common in aerospace and defence parts.
Powder Coating
Electrostatically applied polymer coating providing a thick, impact-resistant colour finish with excellent outdoor durability and wide RAL colour range.
Polishing / Mirror Finish
Mechanical or electrochemical polishing achieving Ra 0.4 μm. Used in optical, medical, and premium consumer product applications.
Brushing
Directional satin finish applied with abrasive belts. Provides a clean, consistent linear texture for a premium look on panels, enclosures, and housings.
Electroplating / Nickel
Nickel or chrome plating for improved hardness, wear resistance, and appearance. Electroless nickel provides uniform coverage on complex shapes.
As-Machined
Clean machined surface with no additional treatment (Ra 1.6–3.2 μm). Cost-effective option for functional prototypes and internal structural components.
Applications
Industries Using CNC Machined Aluminium Parts
Our aluminium CNC machined components are trusted by engineers and procurement teams across India and internationally across a wide range of demanding industries.
Aerospace
Automotive
Electric Vehicles
Electronics
Oil & Gas
Hydro Energy
Wind Energy
Industrial Machinery
Medical Devices
Marine
Defence
Mold & Die
How We Work
From Design to Delivered Aluminium Part
Our streamlined four-step process ensures high-quality aluminium parts with full quality documentation and on-time delivery every time.
01
Upload Your Design
Submit your STEP, IGES, DWG, or PDF drawing. We accept all CAD formats and provide free DFM (design for manufacturability) feedback on every quote.
02
Quote & Engineering Review
Our engineers review your part, recommend the best aluminium grade and surface finish, then provide a competitive quote within 24–48 hours.
03
CNC Machining & QC
Parts are machined on our precision CNC equipment and inspected with CMM. A full dimensional inspection report is provided with every order.
04
Packing & Dispatch
Parts are carefully packed to prevent transit damage and dispatched with traceable shipping — across India and internationally with fast lead times.
Why Choose Us
Why Choose Krsnaye for Aluminium CNC Machining?
Here's why engineers and procurement teams trust Krsnaye Industrial as their long-term precision machining partner for aluminium components.
✓
20+ Years of Experience
Over two decades delivering precision aluminium CNC machined parts for customers in aerospace, automotive, energy, and industrial sectors.
✓
ISO 9001:2015 Certified
Our quality management system is ISO 9001:2015 and ISO 45001:2015 certified, ensuring consistent quality and full traceability on every order.
✓
Advanced 5-Axis Capability
3-axis, 4-axis, and 5-axis CNC milling plus turning-milling compound lathes — handling simple and highly complex aluminium geometries under one roof.
✓
Tight Tolerances up to ±0.001 mm
Our experienced machinists and precision equipment consistently achieve tolerances of ±0.001 mm for critical aluminium components.
✓
Fast Delivery — From 5 Days
Aluminium prototype parts delivered in as fast as 5 working days. Production batches planned and dispatched according to your project schedule.
✓
Complete In-House Finishing
Anodizing, bead blasting, powder coating, polishing, and more — all handled in-house or through trusted finishing partners for one-stop convenience.