Rod, pipe, wire made of 2.1020CuSn6
|Grade||analogue||W. Nr.||Aisi Uns||En||Order|
|БРОФ6.5-0.15||Buy from stock, view availability|
2.1020CuSn6 relates to a class of tin bronze that can be pressure-treated. Industrial use: screws, shafts, wear-resistant bushings, bearings, pump components.
Tin bronzes have increased anti-friction qualities. They are non-magnetic, cold-resistant, insensitive to overheating, have a minimum volumetric shrink-off (approximately 0.8%). Due to this, it is widely used in art casting. The main demerit of tin bronzes is formation of small reeds in castings, which can disrupt it hydraulic soundness. Tin bronzes are alloyed with plumb, zinc, nickel, phosphorus.
Solid solution forms during a process of copper and tin melting. It is prone to segregation because of a high temperature interval of crystallization. Alloys that contain more than 5% of tin possess a segregation because of eutectoid component E (a + d), which consists of hard and soft phases.
Structure of this alloy is beneficial for parts of sleeve bearings: solid particles provide wear resistance. Soft phase gives excellent conformability due to which tin bronzes are excellent anti-friction materials.
Coefficient of friction with lubricant = 0.01
Coefficient of friction without lubricant =0.12
Alloy hardness: HB 10 -1 = 70 — 90 MPа
Point of melting = 995°C
Percentage composition according to GOST
|Cu||92.65 — 93.9|
|P||0.1 — 0.25|
|Sn||6 — 7|
Mechanical characteristics of alloy 2.1020CuSn6 at a temperature of 20°С
|Mill-products||σv (MPa)||sT (MPa)||
|δ5 (%)||F.e.||Size||ψ %|
Physical characteristics of grade 2.1020CuSn6
a 10 -6 (1/Degree)
E 10— 5 (MPa)
|T (Degree)||l (V/(m-Degree))||
R 10 9(Ohm-m)
|— 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||Jê||— elastic strength, MPa||σ0,05|
|— ultimate bending strength, MPa||σpr||— 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||σc0.05|
|— 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|
|— linear 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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