ASTM B168 UNS N06600 Alloy 600 Plate, Sheet & Strip | ASME SB-168
We supply ASTM B168 UNS N06600 Alloy 600 plate, sheet and strip for high-temperature equipment, chemical processing, furnace components, energy systems and other demanding industrial applications.
Alloy 600 / UNS N06600 / W.Nr. 2.4816 is a nickel-chromium-iron alloy combining excellent high-temperature oxidation resistance, good mechanical strength and strong resistance to many corrosive environments.
ASTM B168 and ASME SB-168 material can be supplied in customized thicknesses, widths and lengths with EN 10204 3.1 material certification and project-specific inspection.
ASTM B168 Alloy 600 Plate, Sheet & Strip
ASTM B168 covers rolled nickel-alloy plate, sheet and strip, including UNS N06600 Alloy 600.
| Product | Typical Supply |
|---|---|
| Material | Alloy 600 |
| UNS | N06600 |
| W.Nr. | 2.4816 |
| Material Type | Nickel-Chromium-Iron Alloy |
| Standard | ASTM B168 / ASME SB-168 |
| Product Form | Plate / Sheet / Strip |
| Condition | Annealed / As Specified |
| Thickness | Customized |
| Width & Length | Customized |
| Surface | Mill Finish / Pickled / As Specified |
| Certification | EN 10204 3.1 MTC available |
Cut-to-size plates and special dimensions can be supplied according to drawings and purchase specifications.
What Is Alloy 600 UNS N06600?
Alloy 600 is a nickel-chromium-iron alloy developed for applications requiring both corrosion resistance and good performance at elevated temperatures.
The high nickel content provides resistance to many organic and inorganic compounds and gives the alloy particularly good resistance to chloride-ion stress-corrosion cracking.
Chromium improves resistance to:
- High-temperature oxidation
- Sulfur-containing environments
- Oxidizing chemical solutions
- Carburizing and nitriding environments under suitable service conditions
Alloy 600 also maintains useful mechanical properties across a wide temperature range and can be used in applications from cryogenic temperatures to high-temperature industrial equipment.
Alloy 600 Chemical Composition
Typical ASTM B168 composition limits for UNS N06600 include:
| Element | Composition, wt.% |
|---|---|
| Nickel + Cobalt | 72.0 min |
| Chromium (Cr) | 14.0–17.0 |
| Iron (Fe) | 6.0–10.0 |
| Carbon (C) | 0.15 max |
| Manganese (Mn) | 1.00 max |
| Silicon (Si) | 0.50 max |
| Sulfur (S) | 0.015 max |
| Copper (Cu) | 0.50 max |
The combination of approximately 72% minimum nickel and 14–17% chromium is central to the corrosion and high-temperature performance of Alloy 600.
ASTM B168 Alloy 600 Mechanical Properties
For annealed hot-rolled UNS N06600 plate, typical ASTM B168 minimum room-temperature requirements include:
| Property | Minimum Requirement |
|---|---|
| Tensile Strength | 550 MPa / 80 ksi |
| 0.2% Yield Strength | 240 MPa / 35 ksi |
| Elongation | 30% |
Mechanical requirements may vary according to product form, temper and applicable specification, so final acceptance should follow the purchase order and specified ASTM B168 edition.
Corrosion & High-Temperature Performance
Alloy 600 plate is widely selected where both heat resistance and corrosion resistance are required.
Important characteristics include:
- High resistance to chloride-ion stress-corrosion cracking
- Good resistance to high-purity water
- Good resistance to many caustic alkali solutions
- Good oxidation resistance at elevated temperatures
- Resistance to carburizing and nitriding atmospheres
- Good strength at both low and elevated temperatures
- Good fabrication and welding characteristics
Alloy 600 has been used in applications involving temperatures from cryogenic conditions to above 1000°C, but the maximum allowable operating temperature depends on mechanical load, atmosphere, design code and required service life.
Oxidation resistance should not be interpreted as the allowable design temperature for pressure equipment.
Applications of Alloy 600 Plate & Sheet
ASTM B168 N06600 plate, sheet and strip are commonly used for:
- Industrial furnace components
- Heat-treatment equipment
- Furnace muffles and fixtures
- Chemical processing equipment
- Caustic alkali handling systems
- Reaction vessels
- Heat exchangers
- Nuclear engineering components
- High-temperature ducting and shields
- Petrochemical equipment
- Thermal-processing equipment
- Energy and environmental engineering
- High-temperature automotive components
Alloy 600 vs Alloy 601
Alloy 600 and Alloy 601 are both nickel-chromium alloys, but they are optimized for different service requirements.
| Item | Alloy 600 | Alloy 601 |
|---|---|---|
| UNS | N06600 | N06601 |
| Main Alloy System | Ni-Cr-Fe | Ni-Cr-Fe-Al |
| Aluminum Addition | Low | Higher / intentional |
| Chloride SCC Resistance | Excellent | Good |
| High-Temperature Oxidation | Very Good | Enhanced |
| Typical Positioning | Corrosion + heat service | Severe oxidation service |
Alloy 601 is not simply a higher grade of Alloy 600. The correct alloy depends on operating temperature, atmosphere, corrosion conditions and mechanical requirements.
ASTM B168 vs ASME SB-168
ASTM B168 is the ASTM material specification covering Alloy 600 plate, sheet and strip.
ASME SB-168 is the corresponding ASME material specification commonly referenced for materials used in ASME pressure-equipment applications.
When material is ordered for pressure vessels or other code-controlled equipment, the required ASME Code edition, material specification and certification requirements should be stated in the purchase order.
Plate vs Sheet vs Strip
ASTM B168 covers three flat-rolled product forms:
- Plate – Generally thicker flat-rolled material used for fabricated equipment and structural components.
- Sheet – Thinner flat-rolled material supplied in wider formats.
- Strip – Relatively narrow flat-rolled material, often supplied in coil form.
The applicable product classification should be determined according to ASTM B168 dimensions and purchase requirements.
Inspection & Certification
ASTM B168 Alloy 600 materials can be supplied with:
- EN 10204 3.1 Material Test Certificate
- Chemical composition analysis
- Tensile testing
- Dimensional inspection
- Surface inspection
- PMI testing when specified
- Ultrasonic testing for plate when required
- Grain-size examination when applicable
- Third-party inspection
- Full heat-number traceability
Frequently Asked Questions
What is ASTM B168 UNS N06600?
ASTM B168 UNS N06600 is a specification and material designation for Alloy 600 nickel-chromium-iron plate, sheet and strip used in corrosion-resistant and high-temperature applications.
Is Alloy 600 the same as Inconel 600?
UNS N06600 is the standardized alloy designation. INCONEL® alloy 600 is a registered trade name associated with Special Metals Corporation. In commercial piping and plate markets, “Alloy 600” and “Inconel 600” are often used to describe UNS N06600 material.
What is Alloy 600 plate used for?
Alloy 600 plate is commonly used for furnace equipment, chemical processing, caustic service, heat exchangers, nuclear engineering and other high-temperature components.
Is Alloy 600 suitable for high-temperature applications?
Yes. Alloy 600 has very good oxidation resistance and retains useful mechanical properties at elevated temperatures. Actual allowable temperature must be determined according to the process atmosphere, mechanical stress and applicable engineering design code.
Related Nickel Alloy Products
- ASTM B168 Alloy 601 Plate – Nickel-chromium-aluminum alloy with enhanced high-temperature oxidation resistance.
- ASTM B443 Alloy 625 Plate – Ni-Cr-Mo-Nb alloy for severe corrosion and high-strength applications.
- ASTM B424 Alloy 825 Plate – Ni-Fe-Cr-Mo-Cu alloy for sulfuric and phosphoric acid service.
- ASTM B575 Alloy C276 Plate – Ni-Mo-Cr alloy for severe chemical corrosion environments.
- ASTM B167 Alloy 600 Seamless Pipe & Tube – UNS N06600 seamless piping and tubing.
- ASTM B166 Alloy 600 Round Bar – N06600 nickel alloy bar and rod.
- ASTM B366 Alloy 600 Pipe Fittings – Nickel-alloy elbows, tees, reducers and fittings.
ASTM B168 ASME SB168 UNS N06600 Inconel 600 alloy steel plate sheet
ASTM B168 Alloy 600 Plate Supplier
We supply ASTM B168 / ASME SB-168 Alloy 600 UNS N06600 plate, sheet and strip for international high-temperature and corrosion-resistant equipment projects.
Customized dimensions, cut-to-size material, special testing and complete inspection documentation can be supplied according to customer specifications.
For quotation, please provide the material specification, product form, thickness, width, length, quantity and required inspection documents.
