What Is 1100-H112 Aluminum Pipe
1100-H112 aluminum seamless pipe is primarily used in HVAC systems, chemical processing, food-grade equipment, electrical applications, and decorative structures. Because of its commercially pure aluminum content, it provides excellent corrosion resistance, high thermal conductivity, and superior formability. The seamless extrusion construction ensures leak-free performance for low-pressure fluid transport and heat exchange systems.
HVAC and Heat Exchange
1100-H112 offers massive thermal conductivity, transferring heat out of refrigerants quickly, and the alloy bends into tight coils easily without breaking. Applications include air conditioning routing, cooling coils, condenser tubes, and commercial heat exchangers, with the seamless structure preventing refrigerant gas leaks.
Chemical and Food Industries
The 99 percent purity ensures the metal does not react with many mild acids and chemicals, and the absence of a weld seam removes the weak metallurgical zone where galvanic corrosion attacks. For food and beverage service, 1100 is non-toxic and food safe, with a perfectly smooth internal wall that prevents bacteria buildup and cleans easily during CIP procedures.
Electrical and Decorative Use
With electrical conductivity of about 59 percent IACS, the pipe serves tubular busbars, heavy-duty electrical conduits, and cable protection tubes, with the hollow design providing large surface area for current flow and cooling. For decorative and architectural use, pure 1100 responds perfectly to polishing to a mirror finish or clear anodizing for a pristine appearance.
Mechanical Properties and Limits
Typical values are tensile strength 90 to 110 MPa, yield strength 35 MPa minimum, elongation 15 to 25 percent, density 2.71 g per cubic centimeter, thermal conductivity 220 W per meter per Kelvin, and electrical conductivity 59 percent IACS. The pipe must not be used for high-strength structural parts, high-pressure systems, or high-wear applications.
Fabrication
The pipe cold-bends to very tight radii without cracking, welds easily with TIG or MIG using 1100 filler wire, cuts quickly with carbide saws, and forms excellently for flaring, expanding, and deep drawing, making it one of the most fabrication-friendly aluminum pipe grades.
Frequently Asked Questions
Q: What is 1100-H112 pipe used for?
A: HVAC coils, chemical routing, food lines, electrical busbars, and decoration.
Q: Is 1100-H112 good for HVAC?
A: Yes, with high thermal conductivity and easy bending.
Q: Is 1100 aluminum food safe?
A: Yes, non-toxic with a smooth, cleanable surface.
Q: Can 1100 pipe carry chemicals?
A: Yes, mild chemicals, water, and low-pressure fluids.
Q: What filler is used for welding?
A: 1100 filler wire.
Q: Where should 1100 not be used?
A: High-pressure, high-strength, and high-wear applications.
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