Sales Tianjin T2 copper brass, T2 copper brass chemical composition grades: T2 copper brass Standard: GB / T 4423-1992 ● special and applicable scope: There are good electrical conductivity, thermal conductivity, corrosion resistance and processing capacity, can be soldered and brazed. Including lower electrical conductivity, thermal conductivity less impurities, conductive, thermal and processing can affect the oxygen trace is unlikely, but could easily cause a "hydrogen disease", not processing (annealing, welding at high temperatures (eg> 370 ℃) in a reducing atmosphere, etc. ) and use. ● Chemical Composition: Copper + Silver CuAg: ≥99.90 tin Sn: ≤0.002 Zinc Zn: ≤0.005 Lead Pb: ≤0.005 Lead Pb: ≤0.005 Ni Ni: ≤0.005 iron Fe: ≤0.005 beryllium Sb: ≤0.002 sulfur S: ≤ 0.005 arsenic As: ≤0.002 Bi Bi: ≤0.001 oxygen O: ≤0.06 Note: ≤0.1 (impurity) ● mechanical energy: Tensile strength σb (MPa): ≥275 elongation δ10 (%): ≥5 elongation δ5 (%): ≥10 Note: The vertical temperature tensile bars can sample size: the diameter or on the side away 5 ~ 40 ● heat treatment specifications: thermal processing temperature of 900 ~ 1050 ℃; annealing temperature of 500 ~ 700 ℃; cold with hardened copper recrystallization starting temperature 200 ~ 300 ℃. This year the company operating a variety of brass, brass square, rectangular brass, round copper rod, copper rod hexagonal, square copper rod, copper (band). Material: copper (T1, T2, T3, TP2, TU2) ,, tin brass (HSN70-1A), aluminum brass (HAL77-2), nickel-copper-nickel alloy (B10, BFE10-1-1), bronze (QSN6.5-0.1, QSN4-0.3) and so on.