Architectural Bronze UNS C38000

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations

Introduction

Architectural bronze develops a golden luster when used in leaded brass CuZn41Pb1Al. Architectural bronze alloys enhance the inside and outside appearances of buildings and last for a long time. They are available in many forms and are generally completed by waxing.

UNS C38000 alloys are a type of architectural bronze alloys that are low leaded. The following datasheet provides an overview of UNS C38000 alloys .

Chemical Composition

The chemical composition of UNS C38000 alloys is outlined in the following table.

Element Content (%)
Al 0.50
Cu 55.0-60.0
Fe 0.35
Pb 1.5-2.50
Sn 0.30
Zn 36.35-43.5

Physical Properties

The following table shows the physical properties of UNS C38000 alloys.

Properties Metric Imperial
Density 8.40 g/cm3 0.303 lb/in³

Mechanical Properties

The mechanical properties of UNS C38000 alloys are displayed in the following table.

Properties Metric Imperial
Hardness, Rockwell B 130 130
Tensile strength 420-460 MPa 60900-66700 psi
Yield strength (@strain 0.200%) 228 MPa 33100 psi
Elongation at break (in 50 mm) 20-25% 20-25%
Shear modulus (UNS C38500) 37.0 GPa 5370 ksi
Impact test 16.3 J 12.0 ft-lb

Thermal Properties

The thermal properties of UNS C38000 alloys are given in the following table.

Properties Metric Imperial
Thermal expansion co-efficient 26.0 µm/m°C 14.4 µin/in°F
Thermal conductivity 113 W/mK 784 BTUin/hr.ft².°F

Other Designations

Equivalent materials to UNS C38000 architectural bronze alloys are ASTM B455 alloys.

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