Project Description
Inconel 600 (UNS N06600) is a nickel-chromium-iron superalloy engineered for severe high-temperature and corrosive service. With a minimum nickel content of 72%, it delivers outstanding resistance to oxidation, carburization, and chloride-ion stress corrosion cracking — qualities that make it indispensable in upstream oil & gas, refining, and petrochemical operations. SHUNFU METAL stocks and produces Inconel 600 bar in both rolled and forged conditions, providing certified material for the world’s most demanding drilling and processing environments.
Inconel 600 / N06600 — Introduction
Inconel 600, standardized under ASTM B166 (bar & rod) and widely known by the Werkstoff-Nr. 2.4816, is a solid-solution-strengthened nickel-base alloy that retains mechanical integrity from cryogenic temperatures up to 1,100 °C (2,012 °F). Its combination of high chromium content (14–17%) and a nickel-rich matrix provides a dual shield: chromium forms a protective oxide film against oxidizing atmospheres, while the nickel base suppresses chloride stress-corrosion cracking that plagues austenitic stainless steels.
In oil & gas service, Inconel 600 bar performs reliably in sour-gas environments containing H₂S and CO₂, resists scaling in flare system headers, and withstands the cyclic thermal stresses of steam injection wells. SHUNFU METAL melts Inconel 600 in VIM furnaces and optionally remelts via VAR to eliminate segregation, achieving a refined, uniform grain structure critical for downhole reliability.
Equivalent Grades & Applicable Standards
| Standard Body | Designation / Grade | Specification / Form |
|---|---|---|
| ASTM | N06600 | B166 (bar & rod), B168 (plate/sheet), B163 (tube), B564 (forgings) |
| ASME | N06600 | SB-166 (bar), SB-168 (plate), SB-163 (tube), SB-564 (forgings) |
| AMS | — | AMS 5540 (sheet/strip), AMS 5665 (bar, rod, wire) |
| EN / DIN | NiCr15Fe / 2.4816 | EN 10095, EN ISO 9723 (bar) |
| BS | NA14 | BS 3076 (bar) |
| GOST | ЭИ868 / ХН75МБТЮ | GOST 5632 (heat-resistant alloys) |
| JIS | NCF 600 | JIS G 4901 (bar), JIS G 4902 (plate) |
| AFNOR | NC15Fe | NF A 36-607 |
Oil & Gas Applications
Inconel 600 bar is machined or fabricated into the following critical components across upstream, midstream, and downstream oil & gas operations:
- Drill collar stabilizers
- Logging tool mandrels
- Perforating gun components
- Downhole sensor housings
- Wellhead valve stems
- Gate valve bodies
- Packing gland nuts
- Tubing hanger components
- Flare tip support rings
- Flare stack internals
- Burner nozzle inserts
- Thermowell sheaths
- Reactor internals & baffles
- Heat exchanger tube sheets
- Stripper column trays
- Caustic service fasteners
N06600 Bar — Supply Dimensions
SHUNFU METAL supplies Inconel 600 bar in four production forms with wide dimensional coverage to minimize customer lead times. All products are 100% ultrasonic tested and supplied with MTR certifications per EN 10204 3.1 / 3.2.
| Product Form | Section Profile | Size Range | Standard Length |
|---|---|---|---|
| Hot-Rolled Round Bar | Round | Ø 6 mm – Ø 200 mm | 3 m – 6 m (cut-to-length available) |
| Hot-Rolled Flat Bar | Flat / Square | Thickness 6–120 mm × Width 20–300 mm | 2 m – 6 m |
| Forged Round Bar | Round | Ø 80 mm – Ø 800 mm | 0.5 m – 4 m (custom billet & ingot) |
| Forged Flat Bar / Block | Flat / Block | Thickness 50–600 mm × Width up to 1,000 mm | Custom / as-ordered |
Surface conditions: black (as-forged/rolled), peeled (turned), polished, or centerless-ground. Tolerances per ASTM B166 or customer drawing. Minimum order quantities apply to non-standard sizes.
Inconel 600 Chemical Composition
The following composition limits apply per ASTM B166 (bar & rod) for UNS N06600. SHUNFU METAL verifies chemistry via optical emission spectrometry on every heat before release.
| Ni | Cr | Fe | C | Mn | Si | S | Cu |
|---|---|---|---|---|---|---|---|
| ≥ 72.0 | 14.0 – 17.0 | 6.0 – 10.0 | ≤ 0.15 | ≤ 1.0 | ≤ 0.5 | ≤ 0.015 | ≤ 0.5 |
| All values in weight %. Balance: Ni (plus Co if determined, included in Ni min). | |||||||
SHUNFU METAL’s in-house spectrometry lab cross-checks every cast against customer-specified heat analysis requirements. Certificates of conformance and full chemical reports are issued per EN 10204 3.1 as standard; 3.2 witness inspection is available on request.
Mechanical Properties of N06600 Bar
Properties vary with heat treatment condition. The table below summarizes typical and minimum values per ASTM B166 and AMS 5665.
| Condition | Tensile Strength MPa (ksi) | 0.2% Yield Strength MPa (ksi) | Elongation % (min) | Hardness HRB (typ.) |
|---|---|---|---|---|
| Annealed (Hot-Finished) | ≥ 550 (80) · typ. 655 (95) | ≥ 240 (35) · typ. 310 (45) | ≥ 30 | 75 – 88 |
| Annealed (Cold-Drawn) | ≥ 585 (85) · typ. 690 (100) | ≥ 275 (40) · typ. 345 (50) | ≥ 30 | 80 – 90 |
| As-Forged / Solution-Annealed | typ. 620 – 760 (90–110) | typ. 275 – 410 (40–60) | ≥ 35 | 78 – 92 |
| Cold-Worked (Stress-Relieved) | typ. 760 – 900 (110–130) | typ. 550 – 700 (80–100) | ≥ 15 | 92 – 100 |
Heat treatment: annealing is typically performed at 980–1,060 °C (1,800–1,940 °F) followed by rapid quench. SHUNFU METAL conducts destructive mechanical testing (tensile, hardness) per ASTM E8 and ASTM E18 on test coupons taken from production bar ends. Results are documented in the material test report issued with each shipment.
