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Huashang Steel is a professional manufacturer and supplier of Hastelloy C276 Micro Tubes (UNS N10276), producing precision seamless and welded nickel alloy micro tubing for highly corrosive and demanding industrial environments. These tubes serve industrial clients across multiple sectors where stable corrosion performance is required, with production aligned to widely recognized industry standards.
Hastelloy C276 is a nickel-molybdenum-chromium alloy formulated for use in aggressive corrosive industrial conditions. The nominal chemical composition of the alloy is as follows:
Nickel (Ni): Balance
Molybdenum (Mo): 15.0 – 17.0%
Chromium (Cr): 14.5 – 16.5%
Iron (Fe): 4.0 – 7.0%
Tungsten (W): 3.0 – 4.5%
This element combination delivers resistance to oxidizing and reducing environments, as well as chloride-induced corrosion, pitting, crevice corrosion and stress corrosion cracking.
All Hastelloy C276 micro tubes are manufactured to consistent industry specifications. The applicable standards include:
ASTM B622 (Seamless Pipe & Tube)
ASTM B619 (Welded Pipe & Tube)
ASTM B626 (Welded Tube)
ASME SB622
ASME SB619
ASME SB626
Parameter | Range |
Outside Diameter (OD) | 0.20 mm – 10.00 mm |
Inside Diameter (ID) | 0.05 mm – 6.00 mm |
Wall Thickness (WT) | 0.05 mm – 2.00 mm |
Length | Up to 6000 mm |
Tolerance | ±0.005 mm to ±0.05 mm |
Surface Finish | Bright Annealed (BA), Pickled, Polished |
OD × WT (mm) |
0.20 × 0.05 |
0.30 × 0.05 |
0.50 × 0.10 |
0.71 × 0.10 |
1.00 × 0.15 |
1.50 × 0.20 |
2.00 × 0.20 |
3.00 × 0.30 |
4.00 × 0.50 |
6.00 × 0.50 |
Custom sizes can be produced according to customer drawings to fit specific project requirements.
Production follows a standardized multi-step process to ensure dimensional consistency and material performance. The workflow includes raw material verification, billet inspection, hot extrusion, multi-pass cold drawing, intermediate annealing, precision sizing, bright annealing, straightening, cutting to length, cleaning, inspection and testing, and final packaging.
Every Hastelloy C276 micro tube undergoes comprehensive inspection to verify compliance with ASTM, ASME and project-specific requirements. Testing covers dimensional verification, chemical composition analysis via spectrometer, 100% positive material identification (PMI), mechanical property testing, corrosion testing per ASTM G28, metallurgical examination, and non-destructive testing including eddy current, ultrasonic, dye penetrant and hydrostatic pressure testing. For semiconductor, aerospace, hydrogen and chemical processing projects, additional testing such as cleanliness inspection, surface roughness measurement and hydrogen compatibility testing is available. Full material traceability is provided for all orders.
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This nickel alloy micro tubing is deployed across multiple industrial sectors requiring corrosion resistance and precise dimensions. Primary application areas include chemical processing acid transfer systems and reactor equipment, hydrogen production and refueling infrastructure, LNG cryogenic heat exchangers, semiconductor ultra-high purity gas delivery lines, pharmaceutical high-purity fluid systems, flue gas desulfurization scrubbers, aerospace thermal management systems, and compact microtube heat exchangers.
The standard manufacturing range for outside diameter starts at 0.20 mm, with a minimum wall thickness of 0.05 mm. Dimensional tolerance ranges from ±0.005 mm to ±0.05 mm depending on specific specifications.
Yes, custom sizes can be manufactured according to customer drawings. Both prototype and mass production orders are supported to accommodate varied commercial procurement and project requirements.
Huashang Steel supplies Hastelloy C276 micro tubing with full material traceability, supporting both small-batch prototype development and large-scale production for industrial clients. For custom specifications or project-specific testing requirements, inquiries are welcome to receive detailed product support.
