Hangbo Alloy Group
Shanghai · Est. 2012
Ultra-thin cold-rolled strips with tight dimensional tolerances down to ±0.005 mm. Ideal for spring manufacturing, electronic contacts, battery connectors, and heat exchanger foils.
Hangbo Alloy Group manufactures precision nickel alloy strips using advanced Sendzimir 20-high cold rolling mills. Our strips achieve exceptional dimensional accuracy, surface quality, and edge condition, meeting the stringent requirements of electronics, aerospace, and medical device industries. Each coil is produced with controlled rolling parameters and intermediate annealing to maintain uniform mechanical properties throughout the length.
We offer strips in thicknesses from 0.02 mm foil to 3.0 mm strip, with precision slit edges for consistent width tolerance. Strips are supplied in coil form or cut-to-length pieces, with optional surface treatments including bright annealing, degreasing, and passivation.
| Parameter | Specification |
|---|---|
| Thickness Range | 0.02 mm – 3.0 mm |
| Width Range | 3 mm – 650 mm (slit to specification) |
| Thickness Tolerance | ±0.005 mm (under 0.5 mm); ±0.01 mm (0.5–3.0 mm) |
| Width Tolerance | ±0.1 mm (slit); ±0.05 mm (precision slit) |
| Coil ID | 300 mm / 400 mm / 500 mm |
| Coil Weight | Up to 3,000 kg |
| Surface Finish | Bright annealed / Matt / Polished / Brushed |
| Edge Condition | Slit edge / Round edge / Deburred |
| Flatness | I-units per ASTM A680 (tight special) |
| Coil Winding | Traverse wound / Oscillated wound / Ribbon wound |
| MOQ | 200 kg (standard); 500 kg (custom width/thickness) |
| Lead Time | 15–25 days (stock); 30–45 days (production) |
| Grade | Ni | Cr | Mo | Fe | Cu | Ti | Other |
|---|---|---|---|---|---|---|---|
| Inconel X-750 | 70 min | 14-17 | — | 5-9 | 0.5 max | 2.25-2.75 | Nb+Ta 0.7-1.2, Al 0.4-1.0, C ≤0.08 |
| Monel K-500 | 63-70 | — | — | 2.0 max | 27-33 | 0.35-0.85 | Al 2.3-3.15, C ≤0.25 |
| Nickel 201 | 99.0 min | — | — | 0.40 max | 0.25 max | — | C 0.02 max |
| Hastelloy C-276 | bal | 14.5-16.5 | 15-17 | 4-7 | — | — | W 3-4.5, C ≤0.01 |
| Incoloy 825 | 38-46 | 19.5-23.5 | 2.5-3.5 | 22 min | 1.5-3.0 | 0.6-1.2 | Al 0.2 max, C ≤0.05 |
| Alloy 36 (Invar) | 35-37 | 0.5 max | — | bal | 0.5 max | — | Si 0.35 max, C ≤0.05 |
| Cu-Ni 70/30 | 29-33 | — | — | 0.5-1.5 | bal | — | Mn ≤1.0, C ≤0.05 |
Precision cold rolling to 0.02mm with exceptional gauge control
Multi-blade rotary slitting for width accuracy of ±0.05mm
Continuous hydrogen atmosphere annealing for mirror surface
On-line X-ray and laser thickness gauge with SPC feedback
Vibratory and brush deburring for burr-free edges on thin foil
Gauge report, mechanical test, surface inspection, MTR supplied
| Standard | Scope |
|---|---|
| ASTM B168 | Ni-Cr-Fe (Inconel 600) strip |
| ASTM B575 | Ni-Mo-Cr (Hastelloy) strip |
| ASTM B122 | Cu-Ni alloy strip |
| ASTM B127 | Monel (Ni-Cu) strip |
| ASTM B162 | Nickel (Ni 200/201) strip |
| ASTM B408 | Fe-Ni-Cr (Incoloy) bar and strip |
| ASTM B637 | Precipitation hardening (718, X-750) strip |
| ASTM F30 | Ni-Fe low expansion alloy strip |
| AMS 5544 | Inconel X-750 strip, solution treated |
We can produce strips as thin as 0.02 mm (20 microns) for specialized applications such as battery foils and EMI shielding. Standard thin-gauge production starts at 0.05 mm. For foils below 0.05 mm, minimum order quantities and lead times may vary.
For cold-rolled strips under 0.5 mm thick, we achieve thickness tolerance of ±0.005 mm. For strips 0.5-3.0 mm, tolerance is ±0.01 mm. Width tolerance for slit strips is ±0.1 mm standard or ±0.05 mm for precision-slit applications.
Yes. We supply strips in various tempers: annealed (soft), 1/4 hard, 1/2 hard, 3/4 hard, full hard, and spring temper. The appropriate temper is selected based on the application requirements for strength, ductility, and formability. Spring temper strips are commonly supplied for Inconel X-750 and Monel K-500.
Yes. We offer bright annealed, matt, polished, and brushed surface finishes. Additional treatments include degreasing, passivation, electropolishing, and tin plating for electronic applications. Custom surface roughness (Ra) can be specified.
Send us your grade, thickness, width, temper, and quantity. We respond within 10 minutes during business hours.