Annealed/straightened bar is a metal bar that has undergone annealing, a heat treatment process involving heating, holding, and slow cooling, followed by straightening between a set of rolls. This process improves ductility, reduces hardness, and relieves internal stresses, enhancing machinability and toughness. Annealed/Straightened bars are widely used in manufacturing, forming, and machining applications.
- Annealed/ Straightened Size: (Round mm) — 24mm to 150mm
- Round Corner Square (RCS) (mm) — 45,50,52,54,55,63,70,75,85,90,100
Annealed and Straightened Bar Specification
| Application |
Machined Components, Pump Shafts, Valves, Fasteners, Machine
Tools, Dairy Equipment, Surgical & Medical Parts, Threaded Bars,
Studs, Bolts, Pins, Hinges, and Handles.
|
| Grade | 201A, 201B, 201C, 202, 204Cu, 303, 303Cu, 303F, 304, 304Cu, 304L, 310, 316, 316L, 32, 410, 420, 416, 430, 431, 430F & others. |
| Condition | Cold Drawn & Polished, Cold Drawn, Centreless Ground & Polished. |
| Diameter | 2 mm to 12 mm (1/8" to 1/2"), 6 mm to 40 mm (1/4" to 1 1/2"). |
| Diameter Tolerance | h9 (DIN 671), h11, ASTM A 484 H7, h8, h9 (DIN 671). |
| Length | As per requirement, up to 7 meters with a minimum length tolerance of -0+/100mm. |
Key Features of Annealed and Straightened Bars
| Feature | Description |
|---|---|
| Softened Structure | Heat-treated to relieve internal stresses and improve ductility. |
| Improved Machinability | Easier to cut, drill, or shape. |
| Enhanced Toughness | Reduces brittleness, making it more resistant to cracking. |
| Better Cold Working Properties | Ideal for further forming processes. |
| Reduced Hardness | Makes it easier to machine or process further. |
Applications of Annealed and Straightened Bars
Construction Industry
Automotive Sector
Aerospace
Shipbuilding
Machinery and Tools