Metal Circle Manufacturer, Stockist & Exporter in India

Metal Circle Manufacturer, Stockist & Exporter in India – Exotic Metals LLP

Introduction: The Foundation of Precision Engineering

At Exotic Metals LLP our Metal Circles (also known as "Blanks" or "Discs") are the precision-cut foundations for a vast array of industrial and consumer products. Unlike square sheets, a circle is a pre-cut geometry that eliminates material waste and significantly reduces the processing time for manufacturers involved in deep drawing, spinning, and stamping.

Metal Circle Manufacturer & Supplier in India

As a premier manufacturer and exporter in India, Exotic Metals LLP produces circles through high-precision punching, laser cutting, or waterjet cutting, depending on the material thickness and required edge quality. Our circles are engineered to have uniform grain structures, which is critical during the "Spinning" or "Deep Drawing" process to prevent thinning or cracking at the edges. Whether you are fabricating a hemispherical tank head for a chemical reactor or producing high-end industrial filtration discs, our circles provide the metallurgical consistency required for seamless fabrication.

Technical Specification Table

Feature	Details
Diameter Range	20mm to 2500mm
Thickness Range	0.3mm to 100mm+
Standard Specifications	ASTM A240, A480, ASME SA240, EN 10088-2
Manufacturing	Blanking (Thin Gauge), Laser/Plasma Cutting (Medium), Waterjet (Thick)
Surface Finish	2B, BA, No. 4, Polished, or Hot Rolled (No. 1)
Edges	Deburred, Ground, or Machined (for heavy rings)
Tolerances	Diameter: +/- 0.5mm

Primary Applications of Metal Circles

Exotic Metals LLP categorizes our circle products based on the mechanical stresses they will encounter during secondary manufacturing:

Deep Drawing Blanks

These circles are annealed to a "soft" state to allow for extreme deformation. They are used to manufacture cylinders, fire extinguishers, and hollowware. The material is processed to minimize "earing" (uneven edges) during the draw, ensuring a perfect cylindrical shape.
Pressure Vessel Dish Ends

Large-diameter, heavy-gauge circles are the starting point for forming "Dish Ends" or "Tank Heads." We provide circles in high-strength carbon steel and stainless steel that can withstand the immense pressure required for hydraulic pressing and flanging.
Flange Blanks

For the piping industry, we provide thick, rough-cut circles used as the raw material for forging and machining custom flanges. This allows manufacturers to bypass the square-to-round cutting phase, significantly reducing machining time.
Cookware & Kitchenware Circles

Primarily manufactured from Grade 304 or 430 stainless steel. These circles feature high-polish finishes (BA/No. 4) and are designed for high-speed spinning into pots, pans, and bowls. We also provide multi-ply (Tri-ply) circles with aluminum or copper cores for superior heat conductivity.
Filtration & Perforated Discs

Custom-diameter circles used as support plates in industrial filters. These can be supplied as solid blanks or pre-perforated with precision holes to meet specific flow requirements in the chemical and water treatment industries.

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Grade Range: From Basic Steel to High-Performance Alloys

We maintain a massive inventory of material grades to suit every thermal and corrosive environment:

Stainless Steel: 304, 304L, 316, 316L, 316Ti, 317L, 321, 310S (High Temp), 430 (Ferritic).
Nickel Alloys: Inconel 600, 625, Monel 400, Hastelloy C276, Alloy 20.
Specialty Metals: Titanium Grade 2, Grade 5, Aluminum 1000, 3000, and 5000 Series.
Carbon Steel: ASTM A516 Gr. 70 (Boiler Quality), IS 2062, ASTM A36.
Copper & Brass: Used primarily for decorative blanks and electrical components.

Chemical Composition (%)

Our circles are verified for chemical uniformity to ensure consistent welding and forming.

Grade	Carbon (C)	Chromium (Cr)	Nickel (Ni)	Molybdenum (Mo)	Others
SS 304	0.08 Max	18.0–20.0	8.0–10.5	—	Mn: 2.0
SS 316L	0.03 Max	16.0–18.0	10.0–14.0	2.0–3.0	N: 0.10
Alloy 400	0.30 Max	—	63.0 Min	—	Cu: 28.0–34.0
SA 516 Gr 70	0.27 Max	—	—	—	Mn: 0.85–1.20

Mechanical Properties

Tested to meet the ductility requirements for spinning and deep drawing.

Grade	Tensile (MPa)	Yield (MPa)	Elongation (%)	Hardness (HRB)
SS 304	515 Min	205 Min	40%	88 Max
SS 430	450 Min	205 Min	22%	89 Max
Alloy 625	827 Min	414 Min	30%	220 HB Max
Aluminum 1100	90 Min	35 Min	25%	23 HB

Standard Weight Chart (Theoretical)

Formula: $\pi \times R^2 \times \text{Thickness} \times \text{Density} = \text{Weight (kg)}$.

Diameter (mm)	Thickness (mm)	Weight (kg) - Stainless	Weight (kg) - Aluminum
100 mm	1.0 mm	0.063 kg	0.021 kg
300 mm	2.0 mm	1.130 kg	0.380 kg
500 mm	3.0 mm	4.710 kg	1.590 kg
1000 mm	5.0 mm	31.40 kg	10.60 kg
1500 mm	10.0 mm	141.30 kg	47.70 kg

Delivery & Packaging Information

At Exotic Metals LLP, we recognize that circles are often the "finished face" of a product. We take extreme care during packaging:

Surface Guard: Polished and BA circles are provided with a high-quality PVC or Laser film to prevent scratches during handling and forming.
Edge Protection: Circles are interlayered with cardboard or craft paper to prevent metal-to-metal friction. Large diameter circles are placed in custom-built round wooden crates.
Moisture Prevention: To prevent oxidation (especially for carbon steel or aluminum), circles are wrapped in moisture-proof HDPE fabric and VCI plastic.
Secure Logistics: Small circles are packed in reinforced cardboard boxes. Large circles are stacked on "round-bed" wooden pallets and strapped with high-tensile steel bands.
Traceability: Every stack is tagged with the Heat Number, Size, Grade, and the Exotic Metals LLP quality seal.
Documentation: We supply Mill Test Certificates (MTC) as per EN 10204 3.1 and ultrasonic testing (UT) reports for heavy-gauge boiler circles.

Frequently Asked Questions (FAQ)

What is the benefit of buying Circles instead of Sheets?

Circles significantly reduce material scrap (as much as 25%). Furthermore, they eliminate the labor and energy costs associated with on-site cutting, allowing you to move directly to the forming or spinning phase.

Can Exotic Metals LLP provide "Machined" circles?

Yes. For thick plates used as tube sheets or flanges, we can provide circles with machined IDs, ODs, and surface finishes to meet exact engineering tolerances.

Why is "Grain Direction" important for circles?

During deep drawing, if the grain is not uniform, the metal will stretch unevenly, causing "ears" at the rim. We use specialized rolling and annealing processes to ensure our circles have a balanced grain structure for superior forming.

Do you offer "Perforated Circles"?

Absolutely. We can provide circles with pre-drilled or punched holes, frequently used as filter supports, grates, or sieve plates in industrial processing equipment.

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