A composition for an alloy according to an aspect of the present disclosure is a composition for an alloy having antimicrobial activity, and may contain a first component composed of Fe and Ni, a second component composed of one or more selected from the group consisting of Cr, Co, Mo, and Cu, and a third component composed of one or more selected from the group consisting of Si, B, and P.

A composition for an alloy according to an aspect of the present disclosure is a composition for an alloy having antimicrobial activity, and may contain a first component composed of Fe and Ni, a second component composed of one or more selected from the group consisting of Cr, Co, Mo, and Cu, and a third component composed of one or more selected from the group consisting of Si, B, and P.

Methods for the production of magnetic powders, compacted magnetic bodies and sintered magnetic bodies. The methods include the use of metal carboxylate precursor compounds such as metal oxalates. The precursor compounds are heated under pressure to form metal alloy particles which can be directly formed into compacted magnetic bodies or can be further refined by using a reductant at elevated temperatures and pressures. The sintered magnetic bodies may have strong magnetic properties even if produced in the absence of a strong magnetic field.

Methods for the production of magnetic powders, compacted magnetic bodies and sintered magnetic bodies. The methods include the use of metal carboxylate precursor compounds such as metal oxalates. The precursor compounds are heated under pressure to form metal alloy particles which can be directly formed into compacted magnetic bodies or can be further refined by using a reductant at elevated temperatures and pressures. The sintered magnetic bodies may have strong magnetic properties even if produced in the absence of a strong magnetic field.

A permanent magnet to be provided to a rotary electric machine. The magnet is expressed by a composition formula: R.sub.pFe.sub.rM.sub.sCu.sub.tCo.sub.100-p-r-s-t. R is selected from rare earth elements, M is selected from Ti, Zr, and Hf, p is a number satisfying 10.5≤p≤12.5 at %, r is a number satisfying 18≤r≤32 at %, s is a number satisfying 0.88≤s≤4.5 at %, and t is a number satisfying 0.88≤t≤13.5 at %. When a proportion r.sub.x of Fe to a total sum of Fe and Co is expressed by r.sub.x=r/(100−p−s−t), a value r.sub.1 of the proportion r.sub.x at a center in a q-axis direction of the magnet and a value r.sub.2 of the proportion r.sub.x at a center in d-axis direction of the magnet satisfy 1.01≤r.sub.1/r.sub.2≤2.

A permanent magnet to be provided to a rotary electric machine. The magnet is expressed by a composition formula: R.sub.pFe.sub.rM.sub.sCu.sub.tCo.sub.100-p-r-s-t. R is selected from rare earth elements, M is selected from Ti, Zr, and Hf, p is a number satisfying 10.5≤p≤12.5 at %, r is a number satisfying 18≤r≤32 at %, s is a number satisfying 0.88≤s≤4.5 at %, and t is a number satisfying 0.88≤t≤13.5 at %. When a proportion r.sub.x of Fe to a total sum of Fe and Co is expressed by r.sub.x=r/(100−p−s−t), a value r.sub.1 of the proportion r.sub.x at a center in a q-axis direction of the magnet and a value r.sub.2 of the proportion r.sub.x at a center in d-axis direction of the magnet satisfy 1.01≤r.sub.1/r.sub.2≤2.

Disclosed herein, in certain embodiments, are composite materials, methods, tools and abrasive materials comprising a tungsten-based metal composition and an alloy. In some cases, the composite materials or material are resistant to oxidation.

Disclosed herein, in certain embodiments, are composite materials, methods, tools and abrasive materials comprising a tungsten-based metal composition and an alloy. In some cases, the composite materials or material are resistant to oxidation.

A silver brazing material containing silver, copper, zinc, manganese, nickel, and tin as indispensable constituent elements. The silver brazing material includes 35 mass % or more and 45 mass % or less silver, 18 mass % or more and 28 mass % or less zinc, 2 mass % or more and 6 mass % or less manganese, 1.5 mass % or more and 6 mass % or less nickel, and 0.5 mass % or more and 5 mass % or less tin, with the balance being copper impurities. Within these compositional ranges, a predetermined relation is set between the manganese content and the nickel content, whereby the silver brazing material can be provided with excellent characteristics also in terms of processability or wettability. In the silver brazing material of the present invention, the silver content is reduced, and also melting point reduction and the narrowing of the temperature difference between solidus temperature and liquidus temperature are attempted.

Provided is an austenitic alloy pipe, which has high yield strength, excellent SCC resistance, suppressed strength anisotropy, and high detectability in ultrasonic flaw detection. The austenitic alloy pipe according to the present embodiment has a chemical composition consisting of: in mass %, C: 0.004 to 0.030%, Si: 1.00% or less, Mn: 0.30 to 2.00%, P: 0.030 or less, S: 0.0020% or less, Al: 0.001 to 0.100%, Cu: 0.50 to 1.50%, Ni: 25.00 to 55.00%, Cr: 20.00 to 30.00%, Mo: 2.00 to 10.00%, and N: 0.005 to 0.100%, with the balance being Fe and impurities. A grain size number of austenite crystal grain is 2.0 to 7.0 and a mixed grain ratio is not more than 5%. Tensile YS is not less than 758 MPa, compressive YS/tensile YS is 0.85 to 1.10, and an outer diameter is not less than 170 mm.