ASTM B729 UNS N08020 Alloy 20 PIPE

Alloy 20 Pipe, UNS N08020 Pipe, ASTM B729 Alloy 20 Pipe, Alloy 20 welded Pipe, 2.4660 pipe, ASTM B474 Alloy 20 Pipe, Alloy 20 Pipe and tube Supplier and Manufacturer in HT PIPE.

Alloy 20 Pipe, also known as Carpenter 20 Pipe, is a nickel-chromium-molybdenum stainless steel alloy designed for applications involving sulfuric acid. This alloy is ideal for industries such as chemical processing, food, and pharmaceuticals due to its superior resistance to corrosion, crevice corrosion, and pitting.

The standards for Alloy 20 Pipe are set by ASTM International, an organization that develops and publishes technical standards for a wide range of materials, products, systems, and services. The standards for Alloy 20 Pipe include ASTM B729, ASTM B464, ASTM B468, and ASTM B473.

The chemical composition of Alloy 20 Pipe:

• Carbon: 0.07% max

• Manganese: 2.00% max

• Phosphorus: 0.045% max

• Sulfur: 0.035% max

• Silicon: 1.00% max

• Nickel: 32.00-38.00%

• Chromium: 19.00-21.00%

• Molybdenum: 2.00-3.00%

• Copper: 3.00-4.00%

• Iron: Balance

The physical properties of Alloy 20 Pipe are as follows:

Density: 8.05 g/cm3

Melting Point: 1450-1525°C

Yield Strength: 35 ksi

Tensile Strength: 80 ksi

Elongation: 30%

Hardness: 88 HRB

Modulus of Elasticity: 196 GPa

Thermal Conductivity: 12.4 W/mK

Coefficient of Thermal Expansion: 14.0x10-6/K

The process of manufacturing Alloy 20 Pipe:

1. Melting: The raw materials, including nickel, chromium, molybdenum, iron, and copper, are first melted in a furnace.

2. Forming: The molten metal is then formed into the desired shape using a casting machine.

3. Rolling: The cast material is then rolled into a plate, which is then further processed into a pipe by using a pipe mill.

4. Heat Treatment: The pipe undergoes heat treatment to enhance its mechanical properties and improve its resistance to corrosion.

Alloy 20 Pipe is widely used in the following industries:

1. Chemical Processing: This alloy is used in the manufacture of equipment such as heat exchangers, tanks, valves, and pumps that are employed in the chemical processing industry.

2. Food and Pharmaceutical: Alloy 20 Pipe is used extensively in the food and pharmaceutical industries for the manufacture of equipment and components due to its superior corrosion resistance and high strength.

3. Petrochemical: This alloy is used in the production of petrochemicals such as gasoline, diesel, jet fuel, and lubricants.

Alloy 20 Pipe is an excellent choice for industries that require corrosion resistance, strength, and durability. Its superior resistance to corrosion, crevice corrosion, and pitting makes it the ideal material for use in the manufacture of chemical processing equipment, food and pharmaceutical industries, and petrochemical industries. The standards, process, chemical composition, physical properties, and applications of this alloy make it a favorite among engineers and manufacturers alike.