Hpb59-1 Lead Brass

What Is Hpb59-1 Lead Brass?

hpb59-1 lead brass is a widely used lead brass, it is characterized by good machinability, good mechanical properties, can withstand cold and hot pressure processing, easy to weld, good brazing, and good for general corrosion It is stable, but has a tendency to corrode and crack. It is mainly used for air-conditioning valves, hardware machinery, etc.

standard:(GB/T 4423-2007)

Standard grade

The first letter “H” of the grade represents brass, the following two digits indicate the average content of brass, and the following symbols and numbers indicate elements and their contents. For example, HPb59-1 indicates that the content of copper (“H”) is about 59%, and lead ( “Pb”) content is about 1%.

chemical composition

Cu: 57.0-60.0
Ni:1.0
Fe:≤0.5
Pb:0.8-1.9
Sb:<0.01
Zn: margin
Impurities: 1.0

Mechanical properties

Tensile strength: (σb/MPa) ≥420
Elongation: (δ10/%)≥10
Elongation: (δ5/%)≥12
Note: Longitudinal room temperature tensile mechanical properties of bars
Sample size: diameter or distance between opposite sides 5-20

HPb59-1 brass rod

Chinese name: HPb59-1
Brass rod material name: lead brass drawn rod (semi-hard, 5～20mm)
Grade: HPb59-1
Standard: GB/T 4423-2007

The biggest feature of copper is its high electrical and thermal conductivity, as well as good corrosion resistance. However, the strength of industrial pure copper is not high (about 200MPa), which limits its use as a structural material. In order to increase the strength of copper and give it special properties, a proper amount of alloying elements is added to the copper to obtain a copper alloy, which has high strength, toughness, wear resistance, and good electrical and thermal conductivity, especially in the air Medium corrosion resistance. Therefore, it has been widely used.

H58 copper rods, H59 copper rods are free-cutting brass, and are divided into environmental protection brass rods and ordinary brass rods. Generally, the authentic 58-3 copper rods and 59-1 copper rods are extruded. The copper rods produced by ordinary continuous casting copper rods cannot meet all aspects of performance. The copper rods of the extrusion process have good tensile properties. High hardness and high straightness.

●Chemical composition:

Copper Cu: 57.0～60.0
Zinc Zn: margin
Lead Pb: 0.8～1.9
Boron B: ≤0.02
Aluminum Al: ≤0.2
Iron Fe: ≤0.5
Antimony Sb: ≤0.01
Bismuth Bi: ≤0.01
Note: ≤1.0 (impurities)

●Mechanical properties:

Tensile strength σb (MPa): ≥420
Elongation δ10 (%): ≥10
Elongation δ5 (%): ≥12
Note: Longitudinal room temperature tensile mechanical properties of bars
Sample size: Diameter or distance between opposite sides 5～20

It is a widely used lead brass with good machinability and good mechanical properties, can withstand cold and hot pressure processing, is easy to wire and weld, has good stability to general corrosion, but has a tendency to corrosion and crack.

Scope of application

Generally, there is a relatively large amount of precision copper parts such as auto parts, medical parts, and electrical parts. It is suitable for various structural parts made by hot stamping and cutting processing, such as screws, washers, bushings, nuts, nozzles, etc.

Specimen size

Diameter or distance between opposite sides 5～20

Production method

State: Semi-hard (Y2)
Tensile strength σb (MPa): ≥420
Yield strength σs(MPa):
Elongation δ10 (%): ≥10
Reduction of area ψ(%): ≥12

hardness:

Heat treatment: hot working temperature 640～780℃; annealing temperature 600～650℃; low temperature annealing temperature to eliminate internal stress 285℃.