วันนี้เรามาพูดคุยกันเรื่องชนิดของเศษทองแดง ที่มีทองแดงผสมอยู่ เกิน 90% ซึ่งมีหลากหลาย
แตกต่างกันไป ตามแหล่ง และการก่อกำเนิด ตามรายละเอียดด้านล่าง
อีกนิด จะเห็นตามคำจำกัดความ จะมีรายละเอียดคล้ายๆ กัน อ่านแล้ว งง แต่เดี๋ยวบทความหน้า เราค่อยมาลงรายละเอียดกันน่า ว่าแต่ละอย่าง ภาษาบ้านๆ มันคืออะไร เช่น Barley คือพวกทองแดงปลอกสายไฟใหม่เส้นใหญ่ๆ ส่วน Berry คือสายไฟเก่า ผ่านการใช้งานมา ที่ปลอกแล้ว
Barley No. 1 COPPER WIRE Shall consist of No. 1 bare, uncoated, unalloyed copper wire, not smaller than No. 16 B & S wire gauge. Green copper wire and hydraulically compacted material to be subject to agreement between buyer and seller.
Berry No. 1 COPPER WIRE Shall consist of clean, untinned, uncoated, unalloyed copper wire and cable, not smaller than No. 16 B & S wire gauge, free of burnt wire which is brittle. Hydraulically briquetted copper subject to agreement.
Birch No. 2 COPPER WIRE Shall consist of miscellaneous, unalloyed copper wire having a nominal 96% copper content (minimum 94%) as determined by electrolytic assay. Should be free of the following: Excessively leaded, tinned, soldered copper wire; brass and bronze wire; excessive oil content, iron, and non-metallics; copper wire from burning, containing insulation; hair wire; burnt wire which is brittle; and should be reasonably free of ash. Hydraulically briquetted copper subject to agreement.
Candy No. 1 HEAVY COPPER Shall consist of clean, unalloyed, uncoated copper clippings, punchings, bus bars, commutator segments, and wire not less than 1/16 of an inch thick, free of burnt wire which is brittle; but may include clean copper tubing. Hydraulically briquetted copper subject to agreement.
Cliff No. 2 COPPER Shall consist of miscellaneous, unalloyed copper scrap having a nominal 96% copper content (minimum 94%) as determined by electrolytic assay. Should be free of the following: Excessively leaded, tinned, soldered copper scrap; brasses and bronzes; excessive oil content, iron and non-metallics; copper tubing with other than copper connections or with sediment; copper wire from burning, containing insulation; hair wire; burnt wire which is brittle; and should be reasonably free of ash. Hydraulically briquetted copper subject to agreement.
Clove No. 1 COPPER WIRE NODULES Shall consist of No. 1 bare, uncoated, unalloyed copper wire scrap nodules, chopped or shredded, free of tin, lead, zinc, aluminum, iron, other metallic impuri-ties, insulation, and other foreign contamination. Minimum copper 99%. Gauge smaller than No. 16 B & S wire and hydraulically compacted material subject to agreement between buyer and seller.
Cobra No. 2 COPPER WIRE NODULES Shall consist of No. 2 unalloyed copper wire scrap nodules, chopped or shredded, minimum 97% copper. Maximum metal impurities not to exceed 0.50% aluminum and 1% each of other metals or insulation. Hydraulically compacted material subject to agreement between buyer and seller.
Cocoa COPPER WIRE NODULES Shall consist of unalloyed copper wire scrap nodules, chopped or shredded, minimum 99% copper. Shall be free of excessive insulation and other non-metallics. Maximum metal impurities as follows: Aluminum .05% Antimony .01% Tin .25% Iron .05% Nickel .05% Hydraulically compacted material subject to agreement between buyer and seller.
Dream LIGHT COPPER Shall consist of miscellaneous, unalloyed copper scrap having a nominal 92% copper content (minimum 88%) as determined by electrolytic assay and shall consist of sheet copper, gutters, downspouts, kettles, boilers, and similar scrap. Should be free of the following: Burnt hair wire; copper clad; plating racks; grindings; copper wire from burning, containing insulation; radiators and fire extinguishers; refrigerator units; electrotype shells; screening; excessively leaded, tinned, soldered scrap; brasses and bronzes; excessive oil, iron and non-metallics; and should be reasonably free of ash. Hydraulically briquetted copper subject to agreement. Any items excluded in this grade are also excluded in the higher grades above.
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