Large-diameter aluminum ring forgings are critical in aerospace, wind & nuclear energy, marine/offshore, rail and heavy machinery where high loads and tight geometry are required.
Chalco delivers aluminum rolled ring forging (seamless rolled rings, CNC radial-axial) and open-die forged rings up to 10 m OD, supporting thin-wall designs with high concentricity/roundness targets (≤ 0.5–1.0 mm, size-dependent). Stable microstructure and dimensions across key alloys (6061, 6082, 7050, 7075, 2024, 5083, 2219) underpin performance in these high-end applications.
Chalco forged ring product specifications
Conventional maximum OD: quenched parts ≤ 2500 mm; non-quenched parts ≤ 4000 mm.
Patented large-diameter capability: seamless rolled rings up to 10 m OD (proven cases; final geometry per drawing review).
Wall & tolerance: thin-wall options for high concentricity; concentricity/roundness targets typically ≤ 0.5–1.0 mm (size-dependent).
Forging lines & presses: 1500 t, 1000 t, 630 t, 160 t; open-die forging and CNC radial-axial ring rolling.
Standards & docs: AMS 4311, ASTM B247, ASTM B594 (UT class per PO; 100% UT on request), EN 573-3, EN 10204 (3.1; 3.2 on request).
Applications focus: aerospace, energy (wind/nuclear), marine & offshore, rail & heavy machinery. For detailed specs and quotes, please consult our sales manager or see Aluminum Forged & Seamless Rolled Rings.
Chalco large diameter forged ring processing methods and production capabilities
| Open die forging ring | Closed die forging ring | Seamless rolled ring (radial-axial) | |
| Production Process | Heat aluminum blank → upset/expand on open-die press/hammer → calibrate to ring shape (no ring rolling). | Place blank in precision dies → press to near-net ring shape with high repeatability. | Pre-form ring blank → radial-axial hot ring rolling → heat treatment → machining. |
| Production equipment | Hydraulic/hammer forging machines, manipulators. | Hydraulic/mechanical presses with dies and tooling. | Radial-axial ring rolling mill with CNC control. |
| Product advantages | Flexible forming for heavy/thick sections and locally reinforced features. | High shape accuracy and surface quality; consistent for mass production. | Ultra-large OD with thin-wall; stable concentricity/roundness (≤ 0.5–1.0 mm size-dependent); higher material yield. |
| Applicable items | Small lots, thick-wall rings, stepped/flanged geometries. | Complex shapes requiring high precision with die control. | Large-size rings (OD up to 10 m subject to drawing review) with uniform wall and tight concentricity. |
- Large-OD program up to 10 m (proven cases); geometry finalized after process review.
- CAD/CAM-assisted tooling and process simulation help control reduction schedule and geometry stability at large OD.
- Smart temperature control maintains forgeability and microstructure across heavy sections and thin walls.
- Precisely controlled heat treatment improves strength, toughness and corrosion resistance for critical rings.
- CNC manipulators and multi-axis control support complex shapes with consistent dimensions.
- Online QC (including temperature/size monitoring and UT) enables traceable, repeatable batches; EN 10204 3.1/3.2 available.
Chalco rolled forging rings hot selling alloy
Selected alloys and tempers for large-OD rings, covering forged and seamless rolled routes.
6061 Aluminum Ring — Forged / Seamless Rolled (T6/T652)
Balanced strength, weldability and corrosion resistance. Suited to large OD structural rings, housings and fixtures requiring stable machinability.
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7075 Aluminum Ring — Forged / Seamless Rolled (T6/T652/T73/T7352)
Ultra-high strength with good fatigue performance. For high-load aerospace rims, couplings and reinforced sections.
Contact us now2024 Aluminum Ring — Forged / Seamless Rolled
Strong fatigue resistance and good machinability. Used for rotating parts and multi-frequency stress structures.
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2219 Aluminum Ring — Forged / Seamless Rolled (T6/T852)
High-temperature performance for hot-end parts, tanks and aerospace assemblies requiring stability at elevated temperatures.
Contact us now2014 Aluminum Ring — Forged / Seamless Rolled (T4/T6/T652)
Good machinability and fatigue properties. Available in special shapes (e.g., D-shaped/triangular rings).
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7475 Aluminum Ring — Forged / Seamless Rolled
High toughness and fracture resistance for safety-critical components where damage tolerance matters.
Contact us now5083 Aluminum Ring — Forged / Seamless Rolled (O/H111/H112)
Excellent corrosion resistance and weldability for marine & offshore structures and cryogenic/chemical tanks.
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7050 Aluminum Ring — Forged / Seamless Rolled (T74/T7452)
High strength with stress-corrosion resistance for heavy-wall, heavy-load rings and structural couplings.
Contact us nowBesides the alloys above, additional grades such as 6082, 2618 and 4032 can be produced on request.
Note: titanium and steel forged/rolled rings are also available case-by-case. Please refer to the alloy table below or consult our sales manager for details.
Instant QuoteChalco large diameter forged ring product property advantages
| Alloy | Temper | Tensile properties of downstream specimens | Brinell hardness | |||
| Tensile strength Rm /MPa | Specifies non-proportional elongation strength | Elongation after break/ % | ||||
| Gauge length 50 mm | A 5 | |||||
| not less than | ||||||
| 6061 | T6 | 260 | 240 | 7 | 6 | 80 |
| 7075 | T6 | 515 | 440 | 7 | 6 | 135 |
| T73 | 455 | 385 | 7 | 6 | 125 | |
| T7352 | 455 | 385 | 7 | 6 | 125 | |
| 2219 | T6 | 400 | 260 | 8 | 7 | 100 |
| 2014 | T4 | 380 | 205 | 11 | 9 | 100 |
| T6 | 450 | 385 | 6 | 5 | 125 | |
| 5083 | O | 270 | 110 | 16 | 14 | - |
| H111 | 290 | 150 | 14 | 12 | - | |
| H112 | 275 | 125 | 16 | 14 | - | |
| 7050 | T74 | 495 | 425 | 7 | 6 | 135 |
- High concentricity and roundness targets (≤ 0.5–1.0 mm, size-dependent) for stable assembly and rotation.
- Circumferential grain flow from ring rolling improves fatigue behavior for rotating parts.
- Higher material yield vs open-die on similar geometry; reduced machining allowance and cycle time.
- Aerospace-grade alloys with heat-treatable strength and corrosion resistance.
- Dimensional stability suitable for thin-wall housings and large OD structures.
- Optional documentation packages: 100% UT, dimensional report, EN 10204 3.1/3.2.
Service industries of Chalco large diameter forged ring
- Aerospace: wing/hub connecting rings, engine sealing rings, bearing seats.
- Space systems: satellite frames, turbine disks, thruster pipelines.
- Marine & offshore: propulsion and transmission systems (bearing/thruster rings).
- Oil & gas: drilling/extraction and refining equipment (support and sealing rings).
- Nuclear & conventional power: sealing and support rings for critical assemblies.
- Automotive & rail: engine/transmission, high-speed train/subway bearing rings.
- Heavy machinery: excavators, cranes, rollers (turntable and gear rings).
- Renewables: wind turbine bearings and structural rings.
For thin-wall large-OD targets and route selection, see Seamless Rolled Ring – Process & Selection Guide. For specifications, alloys and pricing, please consult our sales manager or visit the product page.
Chalco can provide you the most comprehensive inventory of aluminum products and can also supply you customized products. Precise quotation will be provided within 24 hours.
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