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Rod, wire, sheet, strip made of CuSn3Zn7Pb5Ni1

Bronze alloy CuSn3Zn7Pb5Ni1

Identification: CuSn3Zn7Pb5Ni1

Grade: tin casting bronze.

Industrial usage: details that operate in oil, fresh water, steam atmosphere.

Percentage composition of CuSn3Zn7Pb5Ni1 according to GOST 613−79

Identification Description
Al ≤ 0,02
Si ≤ 0,02
Ni 0.5 — 2
Fe ≤ 0,4
Pb 3 — 6
Sn 2.5 — 4
Cu 77.2 — 88
Zn 6 — 9.5

Alloying components significantly increase fluidity and reduce tendency to segregation and weakness of material. Bronze of this grade is hardly exposed to pressure treatment. However, it possesses good cutability and resistant to corrosion. Fitting of general purpose is manufactured of this bronze.

Hardness of bronze CuSn3Zn7Pb5Ni1 is HB 10-1 = 60 MPa

Heat treatment: without heat treatment.

Mechanical characteristics (temperature is 20°С).

Bronze alloy CuSn3Zn7Pb5Ni1 σv (MPa) Size KCU kJ/m2 δ5 (%) ψ %
Sand-mold casting 176     8  
Chill-casting 206     5  
Description Identification Description Identification
— differential deposit at a process of the first crack appearing, % å — ultimate tensile strength (rupture strength), MPa σv
— maximum shear stress, ultimate torsional strength, MPa — elastic strength, MPa σ0,05
— ultimate bending strength, MPa σ bend — conventional yield limit, MPa σ0,2
— fatigue endurance limit during bending test with symmetrical load cycle, MPa σ-1 — percentage elongation after rupture, % δ5,δ4,δ10
— fatigue endurance limit during torsion test with symmetrical load cycle, MPa J-1 — yield point (contraction), MPa σc 0,05
— amount of load cycling n — relative shear, % v
— specific electrical resistance, Ohmm R and ρ — short ultimate tensile strength, MPa sv
— standard module of elasticity HPa E — contraction ratio, % ψ
— properties getting temperature, Degree T — impact hardness, which is established on specimens with concentrators in accordance with V and U types, J/cm2 KCU and KCV
— heating capacity of alloy (heat conduction coefficient), V/(m°С) l — permanent change of form — yield point (proportionality), MPa sT
— specific heat of alloy (temperature range is 20°С), [J/(kg-deg)] C — Brinell hardness HB
— density, kg/m3 pn and r — Vicker’s hardness HV
— lineal thermal expansion coefficient (in a temperature range of 20°С), 1/°С a — Rockwell hardness C HRC
— long-time strength limit, MPa σtТ — Rockwell hardness B HRB
— module of elasticity at a process of torsional shear, HPa G — Shore hardness HSD

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