Incoloy hollow bars are precision-crafted cylindrical bars with a bore down the center, applied where there is a need for internal machining without excessive material removal. Made of high-performance Incoloy alloys such as 800, 825, or 925, these hollow bars possess great strength, corrosion resistance, and temperature stability. They are perfect for creating components like bushings, bearings, couplings, and tubing connectors. Hollow bars are used in those industries where efficient usage of material and machining time are necessary. They are used very effectively in marine, petrochemical, power generation, and chemical process industries because of their strength against oxidation, pitting, and chloride-induced stress corrosion.
Incoloy hollow bars have the same composition as their solid equivalents (800, 825, etc.)—having 30–45% nickel, 20–23% chromium, and iron balance, with additions such as molybdenum and titanium based on the grade. They have tensile strengths of 550–800 MPa and yield strength of 200–600 MPa. Hollow bars are hot or cold finished to close tolerances and have fine resistance to acids, chlorides, and oxidation. Their configuration permits the reduction of weight and expense without sacrificing mechanical integrity in high-pressure and corrosive environments.
| Dimensions | BS, DIN, EN, AISI, JIS, ASME, ASTM |
|---|---|
| Size of Round Bars | Thickness: 2 milimeter-100 milimeter |
| Surface | Bright, Hot Rolled Pickled, Hairline, Cold Drawn, Sand Blasting Finished, Polished |
| Processing | cutting to 650 milimeter |
| Tolerance | H9, K9, H8, H12, K12, H11, H13, K10, K11, H10, or as per need |
| Finish | centreless ground, Cold (bright) drawn, smooth turned, hot rolled, slit rolled edge, peeled, Rough Turned, hot rolled annealed, Polish, Bright, Centreless Ground, Grinding & Black |
| Method | Cold Drawn, Hot Rolled, Cold Rolled Rod, Forged Round Bars |
| Condition | annealed, Hardened & tempered |
| Density | g/cm3 | 7.94 | |
|---|---|---|---|
| lb/in.3 | 0.287 | ||
| Melting Range | °F | 2475 – 2525 | |
| °C | 1357 – 1385 | ||
| Condition & Size | Tensile Strength | Yield Strength (0.2% Offset) | Elongation | Reduction of Area | Hardness |
|---|---|---|---|---|---|
| MPa, min | MPa, min | %, min | %, min | Rockwell, max | |
| Hot worked, as-hot-worked | 550 | 240 | 25 | … | … |
| Cold-worked and hot-worked, annealed | 515 | 205 | 30 | … | … |
| US Bar | Metric | Japanese | Canadian/ASTM | ||||
|---|---|---|---|---|---|---|---|
| Diam. (Inch) | Bar Size | Diam. (mm) | Bar Size | Diameter (mm) | Bar Size | Diameter (mm2) | Bar Size |
| 0.250 | #2 | 5 | 5 | 6 | 6 | 100 | 10M |
| 0.375 | #3 | 5.5 | 5.5 | 10 | 10 | 200 | 15M |
| 0.500 | #4 | 6 | 6 | 13 | 13 | 300 | 20M |
| 0.625 | #5 | 7 | 7 | 16 | 16 | 500 | 25M |
| 0.750 | #6 | 8 | 8 | 19 | 19 | 700 | 30M |
| 0.875 | #7 | 9 | 9 | 22 | 22 | 1000 | 35M |
| 1.000 | #8 | 10 | 10 | 25 | 25 | 1500 | 45M |
| 1.125 | #9 | 11 | 11 | 29 | 29 | 2500 | 55M |
| 1.250 | #10 | 12 | 12 | 32 | 32 | ||
| 1.375 | #11 | 14 | 14 | 35 | 35 | ||
| 1.500 | #12 | 16 | 16 | 38 | 38 | ||
| 1.625 | #13 | 18 | 18 | 41 | 41 | ||
| 1.750 | #14 | 20 | 20 | 44 | 44 | ||
| 1.875 | #15 | 22 | 22 | 48 | 48 | ||
| 2.000 | #16 | 25 | 25 | 51 | 51 | ||
| 2.250 | #18 | 28 | 28 | 57 | 57 | ||
| 32 | 32 | ||||||
| 36 | 36 | ||||||
| 40 | 40 | ||||||
| 44 | 44 | ||||||
| 50 | 50 | ||||||
Yes, Incoloy Hollow Bars can be welded using appropriate techniques, such as gas tungsten arc welding (GTAW). Proper welding procedures ensure strong, durable joints with minimal risk of cracking or corrosion.
Incoloy Hollow Bars are highly resistant to corrosion due to their alloy composition, and typically do not require additional coatings. However, in extremely aggressive environments, further protective measures may be considered for enhanced durability.
Incoloy hollow bars are applied to produce pressure vessel manufacture, hydraulic cylinders, valve bodies, bushings, and pump shafts. They find extensive use in the oil and gas industry for downhole tools, tubing hangers, and completion equipment. In chemical processing plants, they find applications in acid transport pipes, agitator shafts, and tank hardware. Their machinability and material efficiency qualify them for use in rotating equipment and energy systems. Shipbuilding, seawater desalination, and heat exchangers in power stations also utilize them. The hollow shape provides light yet durable parts with high thermal and corrosion resistance in harsh service conditions.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Aiman Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kuala lumpur, Malaysia
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