ASTM B171 Copper Alloy Plate and Sheet

Grade: UNS C36500, UNS C44300, UNS C44400, UNS C44500, UNS C46400, UNS C46500, UNS C61300, UNS C61400, UNS C63000, UNS C63200, UNS C70600, UNS C70620, UNS C71500, UNS C71520, UNS C72200

Type: Plate and Sheet

Features

ASTM B171/B171M Copper Alloy Plate and Sheet for Pressure Vessels, Condensers, and Heat Exchangers

Chemical Composition (wt.%)
Alloy (UNS No.) Cu (incl. Ag) Sn Ni (incl. Co) Mn max Pb Fe Zn Al Cr Other Named Elements
C36500 58.0-61.0 1 0.07 Remainder
C44300 70.0-73.0 0.8-1.2 1.5 0.07 0.06 Remainder
C44400 70.0-73.0 0.8-1.2 1.2-2.0 0.07 0.06 Remainder
C44500 70.0-73.0 0.8-1.2 1 0.07 0.06 Remainder
C46400 59.0-62.0 1 0.2 0.1 Remainder
C46500 59.0-62.0 1 0.2 0.1 Remainder
C61300 Remainder 0.2 0.05 2.0-3.0 0.2 6.0-7.5
C61400 Remainder 1 0.05 1.5-3.5 0.3 6.0-8.0
C63000 Remainder 9.0-11.0 0.3 0.02 2.0-4.0 0.5 9.0-11.0
C63200 Remainder 8.7-9.5 1 0.02 3.5-4.3 0.5 8.7-9.5
C70600 86.5 min 9.0-11.0 1 0.05 1.0-1.8 1
C70620 86.5 min 9.0-11.0 1 0.05 1.0-1.8 1
C71500 65.0 min 29.0-33.0 1 0.05 0.40-1.0 1
C71520 65.0 min 29.0-33.0 1 0.05 0.40-1.0 1
C72200 Remainder 15.0-18.0 0.2 0.05 0.50-1.0 0.5 0.02-0.06 As, 0.02-0.10 Sb
Mechanical Properties
Alloy (UNS No.) Tensile Strength (ksi) Yield Strength (ksi) Elongation (%)
C36500 50-60 20-30 20-30
C44300 50-60 20-30 20-30
C44400 50-60 20-30 20-30
C44500 50-60 20-30 20-30
C46400 60-70 25-35 20-30
C46500 60-70 25-35 20-30
C61300 75-85 30-40 13-18
C61400 75-85 30-40 13-18
C63000 90-110 40-50 10-20
C63200 90-110 40-50 10-20
C70600 40-50 15-20 30-40
C70620 40-50 15-20 30-40
C71500 50-70 20-30 30-40
C71520 50-70 20-30 30-40
C72200 Specific to application Specific to application Specific to application

Technical Specifications

Specification Value
Standard ASTM B171 Copper Alloy Plate and Sheet
Grade UNS C36500, UNS C44300, UNS C44400, UNS C44500, UNS C46400, UNS C46500, UNS C61300, UNS C61400, UNS C63000, UNS C63200, UNS C70600, UNS C70620, UNS C71500, UNS C71520, UNS C72200
Type Plate, Sheet, Strip
Thickness 1-50mm
Length 1000 – 12000mm
Width 500 – 2500mm
Inspection Certificate EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection)
 Tests Tensile Strength (ASTM E8/E8M), Hardness (ASTM E10), Bend Test (ASTM E290), Impact Test (ASTM E23), Intergranular Corrosion Test (Various ASTM Standards)
Packing

Packed on plywood pallets or packed in plywood boxes.

Application

Marine Engineering: Due to their exceptional resistance to seawater corrosion, copper-nickel alloys specified in ASTM B171 are widely used in marine applications. This includes ship hulls, offshore platforms, and piping systems for seawater intake and processing.
Heat Exchangers and Condensers: These materials are commonly used in the manufacturing of heat exchangers and condensers, especially in environments where corrosion resistance is crucial. Their thermal conductivity makes them ideal for efficiently transferring heat in a wide range of industrial processes.
Desalination Plants: In desalination plants, copper-nickel alloys are used for evaporators, heat exchangers, and piping. Their corrosion resistance is vital in handling seawater and the aggressive conditions present in desalination processes.
Power Generation: ASTM B171 materials are used in cooling systems and condensers in power plants, including nuclear, thermal, and hydroelectric facilities. Their ability to withstand high velocities of water and resist biofouling is particularly valued in these applications.
Oil and Gas Industry: In the oil and gas sector, these materials are used for coolers, heat exchangers, and piping in offshore rigs, refineries, and processing plants. Their corrosion resistance is beneficial in the corrosive environments encountered in this industry.
Chemical Processing Industry: The copper alloys specified in ASTM B171 are used in equipment and piping for the chemical processing industry, especially where corrosive chemicals are handled or where seawater is used as a coolant.
Automotive and Aerospace: Although less common, certain copper alloys from ASTM B171 are used in automotive and aerospace applications for their heat exchange properties and corrosion resistance.

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