Hangbo Alloy Group
Shanghai · Est. 2012
Precision-manufactured round bars in Inconel, Hastelloy, Monel, Incoloy and 200+ nickel-based grades. Diameters from 3 mm to 500 mm, cut to exact length with full traceability.
Hangbo Alloy Group manufactures and supplies nickel alloy round bars engineered for demanding environments. Our bars are produced through a controlled process of vacuum induction melting (VIM) followed by electroslag remelting (ESR) or vacuum arc remelting (VAR), ensuring exceptional metallurgical purity and uniform mechanical properties throughout the cross-section.
Each bar undergoes 100% ultrasonic testing, dimensional inspection, and surface defect examination before dispatch. We supply bars in hot-finished, cold-drawn, peeled, ground, and polished conditions to meet specific customer requirements for aerospace, chemical processing, oil & gas, marine, and nuclear applications.
| Parameter | Specification |
|---|---|
| Diameter Range | 3 mm – 500 mm (custom sizes available) |
| Length | 1,000 mm – 6,000 mm (cut to length) |
| Surface Finish | Hot finished / Cold drawn / Peeled / Ground / Polished |
| Diameter Tolerance | h9 / h10 / h11 / h12 or per customer drawing |
| Straightness | ≤ 1 mm per 1,000 mm length |
| Surface Roughness | Ra 0.8 – 3.2 μm (depends on finish) |
| End Condition | Plain / Chamfered / Threaded (on request) |
| MOQ | 50 kg (standard grades); 200 kg (custom grades) |
| Lead Time | 7–15 days (stock); 25–45 days (custom production) |
We maintain inventory of 200+ grades. Below are the most commonly requested. Contact us for any grade not listed.
Nominal chemical composition of the most popular round bar grades (wt%).
| Grade | Ni | Cr | Mo | Fe | Co | Nb+Ta | Ti | Al | Cu | Other |
|---|---|---|---|---|---|---|---|---|---|---|
| Inconel 625 | 58.0 min | 20.0-23.0 | 8.0-10.0 | 5.0 max | 1.0 max | 3.15-4.15 | 0.40 max | 0.40 max | — | Si ≤0.50, Mn ≤0.50, C ≤0.10 |
| Inconel 718 | 50.0-55.0 | 17.0-21.0 | 2.8-3.3 | bal | 1.0 max | 4.75-5.5 | 0.65-1.15 | 0.20-0.80 | 0.30 max | Ta 0.05, B 0.006 |
| Inconel 600 | 72.0 min | 14.0-17.0 | — | 6.0-10.0 | — | — | — | — | 0.50 max | Si ≤0.5, Mn ≤1.0, C ≤0.15 |
| Hastelloy C-276 | bal | 14.5-16.5 | 15.0-17.0 | 4.0-7.0 | 2.5 max | — | — | — | — | W 3.0-4.5, C ≤0.01 |
| Monel 400 | 63.0-70.0 | — | — | 2.5 max | — | — | — | — | 28.0-34.0 | Mn ≤2.0, Si ≤0.5, C ≤0.30 |
| Incoloy 825 | 38.0-46.0 | 19.5-23.5 | 2.5-3.5 | 22.0 min | — | — | 0.6-1.2 | 0.2 max | 1.5-3.0 | Mn ≤1.0, C ≤0.05 |
| Nickel 200 | 99.0 min | — | — | 0.40 max | — | — | — | — | 0.25 max | Mn ≤0.35, C ≤0.15 |
Double-melted for superior cleanliness and reduced inclusion content
Hydraulic press forging up to 3,000T and precision rolling mills
Precision cold drawing for tight tolerance bars from 3-80mm
100% ultrasonic testing (UT), eddy current, and surface defect exam
Heat number tracking from ingot to finished bar, MTR & CoC supplied
Quality management system certified by third-party auditor
| Standard | Scope |
|---|---|
| ASTM B160 | Nickel alloy round bars (Ni, Ni-Cu, Ni-Mo, Ni-Cr-Mo) |
| ASTM B166 | Nickel-Chromium-Iron alloy round bars |
| ASTM B164 | Monel (Nickel-Copper) alloy round bars |
| ASTM B473 | Nickel alloy round bars (precipitation hardening) |
| ASTM B637 | Precipitation hardening nickel alloy bars (718, X-750) |
| AMS 5662 | Inconel 718 bar, solution treated |
| AMS 5666 | Inconel 625 bar, solution annealed |
| EN 10095 | European standard for heat-resisting steel bars |
We supply round bars in Inconel 600, 601, 625, 718, X-750; Hastelloy C-276, C-22, B-3, X; Monel 400, K-500; Incoloy 800, 800H, 825, 925; Nimonic 80A, 90; Pure Nickel 200/201; Alloy 20, Alloy 59, Alloy 28, and 200+ other grades. Custom grades can be developed upon request.
Standard diameters range from 3 mm to 500 mm. Bars can be produced in hot-finished condition for larger diameters and cold-drawn for smaller, precision sizes. Custom diameters outside the standard range can be discussed.
We offer five surface conditions: hot finished (as-forged), cold drawn (smooth surface), peeled (roughness Ra 3.2), ground (Ra 0.8-1.6), and polished (Ra 0.4-0.8). The appropriate finish depends on the application and customer specification.
Yes. Every shipment includes a certified Mill Test Report (MTR) with full chemical analysis, mechanical properties (tensile strength, yield strength, elongation, hardness), heat treatment records, and non-destructive testing results. A Certificate of Conformance (CoC) is also provided.
Yes. We can provide bars with third-party certifications from BV, SGS, TUV, Lloyd's Register, and DNV. We also support EN 10204 3.1 and 3.2 certification. Nuclear-grade and aerospace-grade documentation packages are available.
Send us your grade, diameter, length, quantity, and any special requirements. Our team responds within 10 minutes during business hours.