ASTM B455 Extruded Leaded-Brass Rod and Bar

UNS C38000, UNS C38500
Round: Dia. 2.4 – 200mm
Hexagonal & Octagonal: 3 – 50mm
Square: 5-38mm
Rectangular: T: 5-38mm x W: 5-65mm

Features

ASTM B455 Extruded Leaded-Brass Rod and Bar

Chemical Composition (wt.%)

Element	UNS C38000 (%)	UNS C38500 (%)
Copper	55.0 – 60.0	55.0 – 59.0
Lead	1.5 – 2.5	2.5 – 3.5
Zinc	Remainder	Remainder
Iron (max)	0.35	0.35
Tin (max)	0.3	Not Specified
Aluminum (max)	0.5	Not Specified

Mechanical Properties

Property	UNS C38000 and C38500
Tensile Strength, min (ksi [MPa])	48 [330]
Yield Strength at 0.5% extension, min (ksi [MPa])	16 [110]
Elongation in 2 in. (50.8 mm), min (%)	15

Technical Specifications

Specification	Value
Standard	ASTM B455 Extruded Leaded-Brass Rod and Bar
Grade	UNS C38000 (CuZn40Pb2, CW617N, EN 2.0402), UNS C38500 (CuZn39Pb3, CW614N, EN 2.0401)
Type of Alloy	Copper-Zinc-Lead Alloy
Manufacturing Process	Extruded
Shape of Bars	Round, Hexagonal and Octagonal, Square and Rectangular
Density	8.9g/cm³
Diameter	Round: Dia. 2.4 – 200mm; Hexagonal & Octagonal: 3 – 50mm; Square: 5-38mm; Rectangular: T: 5-38mm x W: 5-65mm
Length	1000 – 6000mm
Inspection Certificate	EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection)
NDE Tests	UT/ET, Chemcial Analysis, Tensile Test

Packing

Small diameter packed in plywood box; large diameter packed on plywood pallets.

Application

UNS C38000: This alloy is used in architectural hardware, plumbing fittings, and general engineering components due to its excellent machinability, moderate strength, and good corrosion resistance.
UNS C38500: Employed in decorative applications, building hardware, and valve components, this alloy features enhanced machinability and corrosion resistance, making it ideal for both aesthetic and functional uses in mild corrosive environments.