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Inconel 600 Round Bars & Rods - ASTM B166 UNS N06600 | Supplier in Mumbai, India
Nicorex Alloys is an ISO 9001 / ISO 14001 certified supplier and stockist of Inconel 600 round bars and rods based in Mumbai, India. Alloy 600 (UNS N06600, Werkstoff 2.4816) is a solid-solution-strengthened nickel-chromium-iron alloy (72% Ni min, 14-17% Cr, 6-10% Fe) manufactured to ASTM B166 / ASME SB166.
This nickel-chromium alloy bar is not precipitation hardenable; it is strengthened only by cold working. Thus, it is the reference Inconel for high-temperature oxidation resistance and thermal cycling durability. Inconel 600 bar hot finished and annealed has a tensile strength ranging from 550 to 690 MPa (80 to 100 ksi) with 35 to 55% elongation. However, if the bar is cold-drawn, the tensile strength rises to 725 to 1035 MPa (105 to 150 ksi) with 10 to 30% elongation. With continuous exposure, a stable chromium oxide scale, Cr₂O₃, protects the bar stock up to 1093°C (2000°F). The alloy has a nickel content of approximately 72%, which provides immunity to chloride-ion stress corrosion cracking and resistance in caustic NaOH solutions. Its density is 8.47 g/cm³, and its melting point range is 1354 to 1413°C.
Diameters span 3-500 mm in lengths of 1-6 m. Forms include round bar, hex bar, flat bar, square bar, rectangular bar, forged bar, hollow bar, and threaded rod. Conditions: annealed, hot finished, cold drawn, and stress relieved. Surface finishes cover black, bright, polished, turned, ground, and peeled. AMS 5665 / AMS 5687 for aerospace. Nickel Alloy 600 rod is available in custom cut lengths with EN 10204 3.1 mill test certificates and PMI reports.
Inconel Alloy 600 Bar Specifications
| Standard | ASTM B166 / ASME SB166 |
|---|---|
| AMS | 5665 (Bar & Forging), 5687 (Bar & Forgings) |
| Diameter | 3 – 500 mm |
| Length | 1 – 6 m, cut-to-length |
| Condition | Annealed, Hot Finished, Cold Drawn, Stress Relieved |
| Surface | Black, Bright, Polished, Turned, Ground, Peeled |
| Tolerance | h9, h10, h11 per ISO 286-2 |
| Forms | Round, Hex, Flat, Square, Rectangular, Forged, Hollow, Threaded |
Note: ASTM B572 covers Hastelloy X bar. ASTM B574 does NOT apply; that standard covers C-type corrosion alloys (C276, C22, C2000).
Chemical Composition of Nickel Alloy 600 Bar & Rod
| Element | Nickel (Ni) + Cobalt | Chromium (Cr) | Iron (Fe) | Carbon (C) | Manganese (Mn) | Silicon (Si) | Copper (Cu) | Sulphur (S) |
|---|---|---|---|---|---|---|---|---|
| Content (wt%) | 72.0 min | 14.0 – 17.0 | 6.0 – 10.0 | 0.15 max | 1.0 max | 0.50 max | 0.50 max | 0.015 max |
Mechanical Properties of ASTM B166 Inconel 600 Round Bar
| Property | Tensile | Yield 0.2% | Elongation | Hardness |
|---|---|---|---|---|
| Annealed | 550-690 MPa (80-100 ksi) | 172−345 MPa (25-50 ksi) | 35-55% | 65-85 HRB |
| Cold Drawn | 725-1035 MPa (105-150 ksi) | 550-860 MPa (80-125 ksi) | 10-30% | 90 HRB – 30 HRC |
Inconel 600 Round Bar Equivalent Grades
| Standard | UNS | Werkstoff Nr. | JIS | GOST |
|---|---|---|---|---|
| Designation | N06600 | 2.4816 | NCF 600 | KhN78T |
Physical Properties of Inconel 600 Bar and Rod
| Property | Density | Melting Range | Elastic Modulus | Thermal Conductivity (20°C) | Thermal Expansion (20-100°C) | Electrical Resistivity (20°C) | Curie Temperature |
|---|---|---|---|---|---|---|---|
| Value | 8.47 | 1354-1413 | 214 | 14.9 | 13.3 × 10⁻⁶ | 1.03 | -124 |
| Unit | g/cm³ | °C | GPa | W/m·°C | /°C | µΩ·m | °C |
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Available Forms of Inconel 600 Bar Stock
Inconel 600 Round Bar
Inconel 600 Hex Bar
Inconel 600 Flat Bar
Inconel 600 Square Bar
Inconel 600 Forged Bar
Inconel 600 Hollow Bar
Inconel 600 Rod
Inconel 600 Rectangular Bar
High-Temperature Performance of Inconel 600 Bar & Rod
Inconel 600 bar forms a stable Cr₂O₃ oxide layer that resists oxidation and scaling in continuous service to 1093°C (2000°F). The alloy also resists carburisation in carbon-bearing atmospheres, making it suited for heat-treating furnace hardware, retorts, and muffles.
The 72% nickel content provides immunity to chloride-ion SCC and resists caustic NaOH environments. Bar stock withstands repeated heating/cooling cycles without cracking. NACE MR-01-75 listed. Inconel 600 is not recommended for strong oxidising acids (HNO₃) or sulphur-bearing reducing atmospheres above 600°C.
Machining, Hot Working & Welding of Inconel 600 Bar
Inconel 600 machining falls between SS 304 and SS 303 in difficulty. Use carbide tooling at 20-40 m/min with heavy steady feeds and sulphurised cutting fluids. Avoid the work-hardened surface layer.
Hot work at 870-1230°C. Avoid 650-870°C (low-ductility zone). Anneal after heavy work. Weld by GTAW, GMAW, SMAW, or SAW using ERNiCr-3 (Filler Metal 82) or ENiCrFe-3 (Electrode 182). No preheat or PWHT required. Interpass: 150°C max.
Industrial Applications of Inconel 600 Round Bar & Rod
Following are the industries in which Inconel 600 Round Bar & Rod are widely used:
- Retorts, muffles, roller hearths, heat-treating baskets, and furnace hardware machined from bar stock for thermal cycling to 1093°C.
- Control rod drive mechanisms, steam generator supports, and primary water system components per ASME Section III.
- Pump shafts and valve stems for caustic soda and fatty acid processing (chloride SCC immunity).
- Exhaust liners, turbine seals, and engine mounting bars per AMS 5665.
- Cathode-ray tube components and thyratron grids requiring stable resistivity.
How to Order Inconel 600 Round Bar & Rod from Nicorex Alloys
- Bar Form - Round, Hex, Flat, Square, Forged, Hollow, Threaded
- Diameter / Size - mm or inches
- Quantity - In kg, MT, or number of pieces
- Condition - Annealed, Cold Drawn, Hot Finished
- Surface Finish - Black, Bright, Polished, Ground, Peeled, Turned
- Tolerance - h9, h10, h11 or custom
- Standard - ASTM B166 / ASME SB166 / AMS 5665
- Additional Teasting- PMI, UT, MPI, TPI, NACE
- Test Certificates - EN 10204 3.1, 3.2
- Packaging - Standard, export-grade, wooden case
- Delivery Destination - Domestic India / international export
Frequently Asked Questions
What ASTM Specification covers Inconel 600 Round Bar?
ASTM B166 (ASME SB166) covers Inconel 600 rod, bar, and wire. AMS 5665 applies for aerospace bar and forgings.
Can Inconel 600 Bar be Precipitation Hardened?
No. Inconel 600 is a solid-solution alloy strengthened only by cold work. For an age-hardenable nickel-chromium grade, consider Inconel X-750 (UNS N07750) with Al and Ti additions.
What is the Maximum Service Temperature for Inconel 600 Bar?
Continuous oxidation service to 1093°C (2000°F). For sustained-load applications, the practical limit is ~600°C due to creep. Cryogenic toughness is retained.