Abstract: This filter comprises: a dielectric substrate; a plurality of resonators that are formed inside the dielectric substrate, and for which the periphery is surrounded by a shielding conductor; and input/output terminals that are formed at a portion at which the shielding conductor is not formed. The resonator closest to the input/output terminal of the plurality of resonators and the resonator that is closest to the input/output terminal of the plurality of resonators are in a point-symmetrical positional relationship.

Abstract: A copper-base alloy includes 63.5 to 69.0 mass % of Cu, 1.2 to 2.0 mass % of Sn, 0.15 mass % or less of Fe, 0.1 to 2.0 mass % of Pb, 0.01 to 0.2 mass % of Al, 0.06 to 0.15 mass % of Sb, and 0.04 to 0.15 mass % of P when the copper-base alloy includes 63.5 mass % or more and less than 65.0 mass % of Cu, or 0.15 mass % or less of P when the copper-base alloy includes 65.0 to 69.0 mass % of Cu, with the balance being Zn and unavoidable impurities.

Abstract: A lead-free brass material exhibiting excellent forgeability and dezincification resistance is provided. The brass material includes 61.0 to 63.0 wt % of Cu, 0.5 to 2.5 wt % of Bi, 1.5 to 3.0 wt % of Sn, 0.02 to 0.10 wt % of Sb, and 0.04 to 0.15 wt % of P, with the balance being substantially Zn. The brass material is a lead-free, free-cutting alloy which can be suitably applied to forging and which exhibits excellent mechanical properties and dezincification resistance without substantially subjecting the brass material to a heat treatment after forging.

Abstract: A high-strength copper alloy contains 20 to 45% of zinc, 0.3 to 1.5% of iron, 0.3 to 1.5% of chromium, and a balance of copper, based on mass.

Abstract: Brass alloy powder has a brass composition formed by a mixed phase of ?-phase and ?-phase, and contains 0.5 to 5.0 mass % of chromium. The chromium includes a component that is solid-solved in a mother phase of brass, and a component that is precipitated at crystal grain boundaries.

Abstract: A galvanized iron article is provided which is formed by hot-dipping the iron article in a galvanizing bath that contains 0.005 to 0.2 mass % of Cu and 0.001 to 0.1 mass % of Al, with the balance being Zn and unavoidable impurities, to provide a galvanized layer thereon.

Abstract: A copper alloy extruded material is provided by extruding a copper alloy powder solidified billet and old grain boundaries remain in it.

Abstract: A hot-dip galvanizing bath contains 0.005 to 0.2 mass % of Cu. In this case, the hot-dip galvanizing bath preferably further contains 0.001 to 0.1 mass % of Al. A Zn—Bi galvanizing bath preferably contains 0.05 to 5.0 mass % of Bi, and a Zn—Pb galvanizing bath preferably contains 0.05 to 3.0 mass % of Pb. An iron article galvanized using the above hot-dip galvanizing bath exhibits an excellent appearance and corrosion resistance.

Abstract: The invention provides a lead-free brass material exhibiting excellent forgeability and dezincification resistance. The brass material includes 61.0 to 63.0 wt % of Cu, 0.5 to 2.5 wt % of Bi, 1.5 to 3.0 wt % of Sn, 0.02 to 0.10 wt % of Sb, and 0.04 to 0.15 wt % of P, with the balance being substantially Zn. The brass material is a lead-free free-cutting alloy which can be suitably applied to forging and exhibits excellent mechanical properties and dezincification resistance without substantially subjecting the brass material to a heat treatment after forging.

Abstract: A double-layered wooden arch truss to be used for frameworks of wooden roofs and characterized in that the wooden arch truss is double-layered with an upper arch member formed of layered wooden plate material and a lower arch member formed identically to the upper member, the wooden arch truss being usable for cattle houses, etc.