BrOTsS4-3 sheet, strip, tube
|Mark||Analogue||W. Nr.||Aisi Uns||En||Order|
|БрОЦС4-4-4||CuSn4Pb4Zn4||Delivery from the stock, in stock|
Class: Tin bronze, processed under pressure
Industrial applications: for plug connector contacts, current-carrying springs, chemical equipment parts.
|The chemical properties of the alloy grade BrOTsS4−3|
|Cu||92.5 — 93.8|
|Zn||2.7 — 3.3|
|Sn||3.5 — 4|
|hire||δ5 (%)||Eg.||sT (MPa)||Rm (MPa)||The size||KCU (kJ / m2)||ip%|
|The physical characteristics of the alloy brand BrOTsS4−3|
|June 10 a (1 / Grad)||E 10- 5 (MPa)||T (Grad)||l (W / (m · deg))||On September 10 R (Ohm · m)||C (J / (kg · deg))||r (kg / m3)|
Tin bronze and their characteristics.
During fusion of copper and tin formed solid solutions, is strongly prone to phase separation due to crystallization of a large temperature range. Alloys with the tin content of more than 5% due to segregation in the structure have eutectoid component E (a + d), consisting of hard and soft phases.
The structure of this type is advantageous for parts of plain bearings: solid particles produce wear, the soft phase provides an excellent running-in connection, tin bronze are excellent anti-friction materials.
Tin bronze BrOTsS4−3 have high anti-friction properties, they are frost-resistant, insensitive to overheating, non-magnetic, have low volumetric shrinkage (approximately 0.8%), thus successfully applied in the art casting.
Their main disadvantage is the formation of pores in the casting, which leads to their low leakage. Tin bronze alloyed with nickel, lead, zinc, phosphorus.
Casting and technological characteristics of the alloy BrOTsS4−3
|hot working temperature||700−800 ° C|
|Melting temperature||1045 ° C|
|annealing temperature||550 — 650 ° C|
|— Tensile strength (strength Tensile), in MPa||σ in||— Relative precipitate at cracking in%||å|
|— Yield strength, in MPa||σ 0,05||— Strength limit torsional (shear stress limit), in MPa||Jê|
|— Conventional liquid limit in MPa||σ 0,2||— Strength limit bending in MPa||σizg|
|— Elongation after rupture in%||δ5, δ4, δ10||— Endurance limit under cyclic symmetric load on a bend, in MPa||σ-1|
|— Compression (yield point), in MPa||σszh0,05 and σszh||— Endurance limit at symmetric cyclic loading torsional MPa||J-1|
|— A relative shift in%||ν||— The number of load cycles||n|
|— Intermittent Strength limit in MPa||sre||— Beats. the electrical resistance in ohm · m||R and ρ|
|— Reduction in%||ψ||— Nominal modulus in GPa||E|
|— Toughness for the samples with concentrators in accordance with the type V and U, in J / cm 2||KCU and KCV||— Test temperature, ° C||T|
|— Yield point — residual deformation (proportional limit), in MPa||sT||— Coefficient of thermal conductivity in W / (m · ° C)||l, and ë|
|— Brinell hardness according to||HB||— Specific heat capacity in [J / (kg · °)]||C|
|— Hardness according to Vickers||HV||— Specific weight kg / m 3||and r pn|
|— Hardness according to Rockwell, wk. FROM||HRC||— Coefficient of linear thermal expansion (1 / ° C)|
|— Hardness according to Rockwell, wk. AT||HRB||— The boundary of long-term strength (MPa)||σtT|
|— Hardness according to Shore||HSD||— Modulus of elasticity (shear twisting) GPa|
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