CC752S Yellow Brass Casting – CuZn37Pb2-C EN 1982

CC752S (EN 1982 / CuZn37Pb2-C) is the higher-zinc yellow brass casting grade in the EN 1982 series, with nominally 60% copper and 37% zinc. Equivalent to US C85400, CC752S is used for decorative hardware, architectural fittings, plumbing trim, and general commercial castings where the slightly lower copper content compared to CC750S provides a cost advantage and the application does not require the corrosion resistance of red brass. CC752S is particularly popular for pressure die casting of thin-wall decorative components.

Alloy Overview

CC752S (Cu 57–63%, Zn ~37%, Pb 1.3–2.5%) has a slightly lower copper content than CC750S, giving marginally higher zinc and a more cost-effective alloy with equivalent castability, appearance, and machinability. The alpha-beta duplex microstructure at this zinc level provides good die-fill in pressure die casting and reliable dimensional repeatability. Suitable for plating, polishing, and lacquering.

Material Composition

Element	Min %	Max %	Typical %	Role
Copper (Cu)	57.0	63.0	60.0	Primary matrix, colour
Zinc (Zn)	Balance	Balance	~37.5	Strength, castability, colour
Lead (Pb)	1.3	2.5	1.8	Machinability
Tin (Sn)	–	0.50	0.10	Minor
Iron (Fe)	–	0.30	0.05	Impurity
Nickel (Ni)	–	0.50	–	Minor
Aluminium (Al)	–	0.50	–	Minor
Manganese (Mn)	–	0.20	–	Impurity
Antimony (Sb)	–	0.05	–	Impurity
Silicon (Si)	–	0.05	–	Impurity

Mechanical Properties

Property	Sand Cast	Die Cast	Standard
Tensile Strength (MPa)	260 min	295 min	ASTM B584/EN 1982
Yield Strength (MPa)	90	110	ASTM E8
Elongation (%)	20%	23%	ASTM E8
Hardness (HB)	60–85		ASTM E10
Density (g/cm³)	8.47		–
Electrical Conductivity (%IACS)	24–26		–
Melting Range (°C)	875–935		–
Machinability (%)	85–90		CDA scale

International Equivalent Grades

Standard	Designation	Name
Europe (EN 1982)	CC752S	CuZn37Pb2-C
USA (ASTM B584)	C85400 / CDA 854	Yellow Brass Casting
Germany (DIN 1709)	CuZn37Pb2-C	Gelbguss
UK (BS 1400)	SCB1 (nearest)	Yellow Brass Casting
India (IS 318)	LTB4	Yellow Brass Grade 4
Japan (JIS H5111)	YBsC2	Yellow Brass Casting 2
ISO	CuZn37Pb2-C	Yellow Brass Sand/Die Casting
China (GB/T 1176)	ZCuZn40Pb2	铸造黄铜 (Cast Brass)

Applications

CC752S castings: decorative door and window hardware; furniture fittings; architectural trim; plumbing fittings; electrical enclosure hardware; consumer product castings requiring attractive finish; pressure die castings for high-volume hardware; and general engineering castings.