According to the invention, the electrode wire (1) for electric discharge machining comprises a metal core (2), in one or more layers of metal or metal alloy. On the metal core (2), a coating (3) having an alloy different from that of the metal core (2) contains more than 50 wt % zinc. The coating (3) comprises copper-zinc alloy (3a) of fractured ? phase, and covers the majority of the metal core (2). The coating (3) contains covered pores (5a, 5b, 5c, 5d, 5) larger than 2 ?m.

A composite thread cable for an aquaculture cage includes multiple multi-filament polyester fiber yarn wires and at least one or more than one copper alloy wire blending and interweaving with the multi-filament polyester fiber yarn wires. Each of the multi-filament polyester fiber yarn wires is made of flexible material. The at least one or more than one copper alloy wire is made of hard material. The at least one or more than one copper alloy wire is intertwined in the multi-filament polyester fiber yarn wires tightly and closely to construct the composite thread cable.

A steel wire for non-heat treated machine parts, the steel wire contains, based on % by mass: C: from 0.20 to 0.40%, Si: from 0.05 to 0.50%, Mn: from 0.50 to 2.00%, Al: from 0.005 to 0.050%, and the balance being Fe and impurities, in which the microstructure contains bainite of (35[C %]+50)% or more, and when the diameter is defined as D, the average aspect ratio of a bainite grain at a depth of 50 m in the L cross section is defined as AR, and the average grain size of a bainite grain at a depth of 50 M in the C cross section is defined as GD, AR is 1.4 or more, (AR)/(the average aspect ratio of a bainite grain at a depth of 0.25D in the L cross section) is 1.1 or more, GD is (15/AR) m or less, and (GD)/(the average grain size of a bainite grain at a depth of 0.25D in the C cross section) is less than 1.0.

A copper alloy wire rod has a chemical composition comprising Ag: 0.1 to 6.0 mass % and P: 0 to 20 mass ppm, the balance being copper with inevitable impurities. In a cross section parallel to a longitudinal direction of the wire rod, a number density of second phase particles each having an aspect ratio of greater than or equal to 1.5 and a size in a direction perpendicular to the longitudinal direction of the wire rod of less than or equal to 200 nm is greater than or equal to 1.4 particles/m.sup.2.

One aspect relates to a method for manufacturing a cable. The method for manufacturing the cable includes the steps of providing several raw wires made of a wire material, drawing the raw wires into wires, coiling the wires into a cable, and heat treating the cable. The wire material includes an alloy including the following alloy components: a) Cr in the range from about 10 to about 30 wt. %; b) Ni in the range from about 20 to about 50 wt. %; c) Mo in the range from about 2 to about 20 wt. %; d) Co in the range from about 10 to about 50 wt. %.

The Al content of the Cr, Ni, Mo and Co alloy is less than about 0.01 wt. % and each wt. % is based on the total weight of the alloy.

One aspect relates to a method for manufacturing a passivated product, a passivated product, and a medical device comprising such passivated product. The passivated product comprises a raw product and a passivation coating. The raw product is made at least partially of an alloy comprising Cr, Ni, Mo and Co, in one embodiment, with tightly controlled levels of impurities. The method for manufacturing the passivated product comprises a providing of a raw product and a passivating of a surface of the raw product at least partially to provide a passivated product with a passivation coating. The raw product is made at least partially of an alloy comprising the following alloy components: a) Cr in the range from about 10 to about 30 wt. %; b) Ni in the range from about 20 to about 50 wt. %; c) Mo in the range from about 2 to about 20 wt. %; d) Co in the range from about 10 to about 50 wt. %.

The Al content of the Cr, Ni, Mo and Co alloy is less than about 0.01 wt. % and each wt. % is based on the total weight of the alloy.

A lumen stent preform is provided using a plasma nitriding technology, a preparation method thereof, a method for preparing a lumen stent by using the preform, and a lumen stent obtained according to the method. The preform is manufactured by using pure iron or an iron alloy containing no strong nitrogen compound, has a hardness of 160-250 HV0.05/10, and has a microstructure that is a deformed structure having a grain size scale greater than or equal to 9 or a deformed structure after cold machining. Alternatively, the preform is an iron alloy containing a strong nitrogen compound, and has a microstructure that is a deformed structure having a grain size scale greater than or equal to 9 or a deformed structure after cold machining. The lumen stent preform meets the requirements of a conventional stent for radial strength and plasticity, so that plasma nitriding is applicable to commercial preparation of a lumen stent.

A saw wire and various methods of use and manufacture are provided. The saw wire includes a metal wire containing at least one of tungsten and a tungsten alloy. A surface roughness Ra of the metal wire is at most 0.15 m. A tensile strength of the metal wire is at least 3500 MPa. A diameter of the metal wire is at most 60 m.

A saw wire and various methods of use and manufacture are provided. The saw wire includes a metal wire containing one of tungsten and a tungsten alloy. A surface roughness Ra of the metal wire is at most 0.15 m. A diameter of the metal wire is at most 60 m.

An aluminum alloy wire rod having a composition including Mg: 0.10-1.00 mass %, Si: 0.10-1.00 mass %, Fe: 0.01-1.40 mass %, Ti: 0-0.100 mass %, B: 0-0.030 mass %, Cu: 0-1.00 mass %, Ag: 0-0.50 mass %, Au: 0-0.50 mass %, Mn: 0-1.00 mass %, Cr: 0-1.00 mass %, Zr: 0-0.50 mass %, Hf: 0-0.50 mass %, V: 0-0.50 mass %, Sc: 0-0.50 mass %, Sn: 0-0.50 mass %, Co: 0-0.50 mass %, Ni: 0-0.50 mass %, and the balance: Al and inevitable impurities, wherein a ratio of (standard deviation of crystal grain size of the aluminum alloy wire rod)/(average crystal grain size of the aluminum alloy wire rod) is less than or equal to 0.57, and a ratio of (diameter of the aluminum alloy wire rod)/(average crystal grain size of the aluminum alloy wire rod) is greater than or equal to 10.