Lead brass
Grade: CuZn40Pb2
Numeric code: 2.0402
Standard: DIN 17660
Lead brass has excellent cutting performance and good wear resistance, and is widely used in the manufacture of watch parts, and is cast to make bearings and bushings. Tin brass has good corrosion resistance and is widely used in the manufacture of sea vessel parts. The aluminum in aluminum brass can improve the strength and hardness of brass and improve the corrosion resistance in the atmosphere, and aluminum brass is used to make corrosion-resistant parts.
Chemical Composition:
Copper Cu: 58.0~63.0 Tin Sn : ≤1.0 (excluding impurities) Zinc Zn: Rest
Lead Pb: 0.5~2.5 Nickel Ni:≤1.0 (excluding the sum of impurities) Aluminum Al:0.2~0.8 Iron Fe:≤0.8 (Impurities)
Manganese Mn: ≤0.5 (impurities) Silicon Si: ≤0.05 (impurities) Note: Sum of impurities≤1.5
Mechanical properties: tensile strength σb (MPa): ≥220 elongation δ5 (%): ≥15 Hardness : ≥85HB (reference value)
Heat treatment specification: heating temperature 1050 ~ 1100 °C; pouring temperature 1000 ~ 1050 °C.
Grade: ZCuZn33Pb2
ZCuZn33Pb2 cast copper alloy is a structural material, with good oxidation resistance at feed water temperature of 90 °C, and conductivity of about 10~14MS/m. ZCuZn33Pb2 cast copper alloy is used in gas and water supply equipment housing, machine building, electronic technology, precision instruments and optical instruments for part of the components of the accessories.
Material Name: Cast Copper Alloy (33-2 Lead Brass, Sand Type)
Standard: GB/T 1176-1987
●Characteristics and scope of application:
Copper Cu: 63.0~67.0
Tin Sn : ≤ 1.5 (excluding the sum of impurities)
Zinc Zn: The rest
Lead Pb: 1.0 to 3.0
Phosphorus P: ≤0.05 (impurity)
Nickel Ni: ≤ 1.0 (excluding total impurities)
Aluminum Al: ≤0.1 (impurity)
Iron Fe: ≤0.8 (impurities)
Manganese Mn: ≤0.2 (impurities)
Silicon Si :≤0.05 (impurity)
Note: The sum of impurities ≤ 1.5
●Mechanical properties:
Tensile strength σb (MPa): ≥180
Yield Strength σ (MPa): ≥70 (reference)
Elongation δ5 (%): ≥12
Hardness: ≥490HB