Hastelloy C-3 Bar
Hastelloy C-3 Bar is a nickel-based corrosion resistant alloy bar designed for demanding chemical processing, marine hardware, aerospace components and precision industrial applications. With excellent resistance to oxidizing chemicals, phosphoric acid, sulfuric acid, pitting corrosion and stress corrosion cracking, Hastelloy C-3 round bar is suitable for severe environments where stainless steel or common nickel alloys may not provide enough corrosion resistance.
SASA ALLOYsupplies Hastelloy C-3 bars in customized diameter, length, tolerance and surface finish. MTC (Mill Test Certificate), EN 10204 3.1 certificate, PMI test, dimensional inspection and third-party inspection can be provided according to project requirements.
Product Parameters
| Item | Details |
|---|---|
| Product Name | Hastelloy C-3 Bar / Nickel Alloy C-3 Round Bar / UNS N06985 Bar |
| Grade | Hastelloy C-3 / Alloy G-3 / UNS N06985 / W.Nr. 2.4619 |
| Material Type | Nickel-Chromium-Iron alloy with Molybdenum and Copper additions |
| Shape & Sizes | Round bar, rod, forged bar, bright bar; diameter can be customized, commonly 6 mm – 300 mm |
| Length | 1000 mm – 6000 mm, cut-to-length available according to customer drawing |
| Surface Finish | Black, bright, peeled, turned, polished, ground |
| Standards | ASTM B581, ASME SB581, ASTM B582, ISO 9724, DIN 17752 or customer technical specification |
| Tolerance | Standard tolerance, h9, h11, k12 or customized tolerance according to drawing |
| Certificate | MTC, EN 10204 3.1 certificate, PMI report, third-party inspection report available |
Chemical Composition
The following chemical composition is a typical reference range for Hastelloy C-3 / UNS N06985 nickel alloy bar. Final values should be confirmed according to the actual Mill Test Certificate.
| Element | Content (%) | Function in Alloy |
|---|---|---|
| Nickel (Ni) | Balance | Provides corrosion resistance and stability in severe environments |
| Chromium (Cr) | 21.0 – 23.5 | Improves resistance to oxidizing media and high-temperature oxidation |
| Iron (Fe) | 18.0 – 21.0 | Supports alloy structure and mechanical performance |
| Molybdenum (Mo) | 6.0 – 8.0 | Enhances resistance to pitting, crevice corrosion and reducing acids |
| Copper (Cu) | 1.5 – 2.5 | Improves resistance to sulfuric acid and reducing chemical environments |
| Cobalt (Co) | ≤ 5.0 | Controlled residual element |
| Tungsten (W) | ≤ 1.5 | Contributes to corrosion resistance in selected media |
| Niobium + Tantalum | ≤ 0.50 | Controlled minor elements |
| Carbon (C) | ≤ 0.015 | Low carbon helps reduce sensitization during welding |
| Silicon (Si) | ≤ 1.00 | Controlled for weldability and corrosion performance |
| Manganese (Mn) | ≤ 1.00 | Controlled residual element |
| Phosphorus (P) | ≤ 0.040 | Controlled impurity |
| Sulfur (S) | ≤ 0.030 | Controlled impurity |
Mechanical Properties
The following mechanical properties are typical reference values for solution annealed or supplied condition Hastelloy C-3 / UNS N06985 bars. Actual mechanical properties depend on diameter, heat treatment condition and production route.
| Property | Reference Value | Notes |
|---|---|---|
| Tensile Strength | ≥ 621 MPa | Suitable for structural and machined components in corrosive environments |
| Yield Strength | ≥ 241 MPa | May vary depending on bar size and condition |
| Elongation | ≥ 45% | Good ductility for fabrication and forming |
| Density | Approx. 8.30 g/cm³ | Engineering reference for weight calculation |
| Melting Range | Approx. 1260 – 1343°C | Reference for thermal processing |
Common Size Table
| Diameter | Typical Length | Surface Finish | Common Use |
|---|---|---|---|
| 6 – 20 mm | 1000 – 3000 mm | Bright, polished, ground | Precision pins, small shafts, machined parts |
| 22 – 50 mm | 2000 – 6000 mm | Peeled, turned, bright | Fasteners, valve parts, pump shafts |
| 55 – 100 mm | 3000 – 6000 mm | Black, peeled, rough turned | Forged components, chemical equipment parts |
| 110 – 200 mm | Cut-to-length | Black, rough turned | Heavy-duty machining, flange blanks, pressure equipment parts |
| Above 200 mm | Customized | Forged, rough turned | Special industrial components and project fabrication |
Different Specifications Comparison
| Product Form | Main Feature | Recommended Application | Selection Advice |
|---|---|---|---|
| Hastelloy C-3 Round Bar | Good corrosion resistance and machinability balance | Valve parts, shafts, fasteners, precision machined parts | Recommended for general bar stock machining |
| Hastelloy C-3 Forged Bar | Better internal structure and strength consistency | Heavy-duty chemical equipment and pressure components | Recommended for large size and critical load components |
| Hastelloy C-3 Bright Bar | Better surface finish and dimensional control | Aerospace, precision parts, instrument components | Suitable for tight tolerance machining |
| Hastelloy C-3 Polished Bar | Smooth surface and improved appearance | Marine hardware and visible equipment parts | Recommended where surface quality is important |
Equivalent Standards and International Names
| Standard / Name | Designation | Remarks |
|---|---|---|
| Common Trade Name | Hastelloy C-3 / Alloy C-3 | Used in nickel alloy product inquiries and supply chains |
| UNS Number | UNS N06985 | Nickel alloy designation |
| Alternative Alloy Name | Alloy G-3 / Inconel G-3 | Often associated with UNS N06985 material references |
| Werkstoff Number | 2.4619 | European material reference |
| Bar Standard | ASTM B581 / ASME SB581 | Nickel alloy rod and bar reference standard |
| Plate / Sheet Standard | ASTM B582 / ASME SB582 | Used for related flat products |
Production Process Flow
| Step | Process | Quality Control Focus |
|---|---|---|
| 1 | Raw Material Selection | Check alloy grade, heat number and raw material traceability |
| 2 | Melting / Refining | Control chemical composition and impurity elements |
| 3 | Hot Rolling / Forging | Ensure uniform structure and required bar size |
| 4 | Solution Annealing | Improve corrosion resistance and metallurgical stability |
| 5 | Straightening | Control straightness for machining and fabrication |
| 6 | Peeling / Turning / Grinding | Improve surface quality and dimensional tolerance |
| 7 | Cutting to Length | Meet customer drawing or project length requirement |
| 8 | Inspection and Testing | PMI, size inspection, surface inspection, mechanical test if required |
| 9 | Packaging and Shipment | Export wooden case, label, heat number and shipping mark |
Product Inspection
| Inspection Item | Inspection Method | Purpose |
|---|---|---|
| Chemical Composition | Spectrometer analysis / laboratory test | Confirm grade and alloy elements |
| PMI Test | Positive Material Identification | Prevent material mix-up and wrong grade shipment |
| Mechanical Test | Tensile strength, yield strength, elongation | Verify engineering performance |
| Dimension Inspection | Caliper, micrometer, straightness inspection | Confirm diameter, length and tolerance |
| Surface Inspection | Visual inspection and surface quality check | Check cracks, scratches, peeling defects and surface finish |
| Ultrasonic Testing | UT inspection if required | Check internal defects for critical bars |
| Third-Party Inspection | SGS, BV, TUV or customer-appointed inspection | Provide independent verification for project orders |
| Certificate | MTC / EN 10204 3.1 | Ensure material traceability and project documentation |
Product Packaging
| Packaging Item | Details | Benefit |
|---|---|---|
| Surface Protection | Plastic film, anti-rust paper or protective wrapping | Protects the bar surface during transportation |
| Bundle Packing | Bars bundled with steel strips or protective belts | Prevents movement and collision |
| Wooden Case / Wooden Pallet | Export-standard fumigation wooden case or pallet | Suitable for long-distance sea and air shipment |
| Labeling | Grade, size, heat number, quantity and customer mark | Improves traceability after delivery |
| Document Support | Packing list, invoice, MTC, EN 10204 3.1 certificate if required | Supports customs clearance and project acceptance |
Applications & Machinability
Applications
| Industry | Typical Parts | Why Hastelloy C-3 Bar Is Used |
|---|---|---|
| Medical Instruments | Non-implant precision instruments, corrosive cleaning equipment parts, laboratory fixtures | Good corrosion resistance and stable surface quality for aggressive cleaning environments |
| Aerospace | Precision components, high-performance fasteners, corrosion-resistant structural parts | Nickel alloy strength, oxidation resistance and reliable performance in demanding environments |
| Marine Hardware | Marine shafts, bolts, valve parts, pump components | Resistance to chloride-containing media, pitting corrosion and seawater-related corrosion |
| Chemical Processing | Heat exchanger parts, pump shafts, valve stems, acid processing equipment, scrubber components | Excellent resistance to phosphoric acid, sulfuric acid, oxidizing chemicals and mixed corrosive media |
Machinability, Welding and Heat Treatment
| Processing Property | Performance | Recommendation |
|---|---|---|
| Machinability | Not a free-cutting alloy like 303 stainless steel, but machinable with proper tooling | Use rigid machines, carbide tools, lower cutting speed and sufficient coolant |
| Welding Performance | Good weldability when proper nickel alloy welding procedures are used | Use suitable filler metal and control heat input to maintain corrosion resistance |
| Heat Treatment | Usually supplied in solution annealed condition; not typically strengthened by precipitation hardening | For final engineering use, heat treatment condition should follow project specification and MTC |
| Cold Working | Can be cold worked, but work hardening should be considered | Intermediate annealing may be needed for heavy forming or severe processing |
Why Choose SASA ALLOY?
| Advantage | Description |
|---|---|
| Professional Nickel Alloy Supply | SASA ALLOY supplies Hastelloy, Inconel, Incoloy, Monel, Nickel alloy bars, pipes, plates, flanges and fittings for chemical, marine, aerospace and energy industries. |
| Customized Size Capability | Diameter, length, surface finish, tolerance and cutting service can be customized according to customer drawings or project requirements. |
| Strict Quality Control | Material traceability, heat number control, PMI testing, dimensional inspection, surface inspection and third-party inspection can be arranged. |
| Certificate Support | We can provide MTC (Mill Test Certificate / 质保书), EN 10204 3.1 certificate, PMI report and other quality documents according to order requirements. |
| Export Packaging Experience | Export wooden cases, wooden pallets, protective wrapping and clear labels help ensure safe delivery for international shipments. |
| Industrial Service Support | Our team can support grade selection, specification confirmation, equivalent standard checking and technical document preparation before shipment. |
FAQ
Q1: What is Hastelloy C-3 Bar?
Hastelloy C-3 Bar is a nickel-based corrosion resistant alloy bar used for chemical processing, marine hardware, aerospace components and precision industrial parts. It is selected when excellent resistance to acid, oxidizing chemicals, pitting corrosion and stress corrosion cracking is required.
Q2: What is the equivalent grade of Hastelloy C-3?
Hastelloy C-3 is commonly associated with UNS N06985 / Alloy G-3 / W.Nr. 2.4619 in nickel alloy material references. For engineering projects, buyers should confirm the exact UNS number, ASTM standard and chemical composition before ordering.
Q3: Can SASA ALLOY provide Hastelloy C-3 Bar with MTC?
Yes. SASA ALLOY can provide MTC (Mill Test Certificate / 质保书), EN 10204 3.1 certificate, PMI test report and third-party inspection documents according to customer requirements.
Q4: What sizes of Hastelloy C-3 Bar are available?
Common diameters include 6 mm to 300 mm. Length, tolerance and surface finish can be customized. Cut-to-length service is also available for machining and project fabrication.
Q5: Is Hastelloy C-3 Bar easy to machine?
Hastelloy C-3 Bar is machinable, but it is not a free-cutting material like 303 stainless steel. Carbide tools, rigid equipment, proper cutting speed and sufficient coolant are recommended to reduce work hardening and improve machining quality.
Q6: Can Hastelloy C-3 Bar be welded?
Yes. Hastelloy C-3 / UNS N06985 material has good weldability when proper nickel alloy welding procedures and suitable filler metal are used. Heat input and cleaning should be controlled to maintain corrosion resistance.
Q7: What industries use Hastelloy C-3 Bar?
Hastelloy C-3 Bar is used in chemical processing equipment, marine hardware, aerospace components, medical instruments, acid handling systems, scrubbers, heat exchangers, valves, pumps and precision machined parts.
Q8: How can I get a quotation for Hastelloy C-3 Bar?
Please send your required grade, diameter, length, quantity, surface finish, tolerance, standard and certificate requirements to SASA ALLOY. Our team will check availability, production route, delivery time and price for your project.