L302 Wire & rod 丝 745-775 Ag25 Cu40 Zn Rem. Brazing of copper, copper alloys, steel and stainless steel etc. 钎焊铜及铜合金、钢及不锈钢等 L303 Wire & rod 丝 660-725 Ag45 Cu30 Zn余 Brazing of copper, copper alloys, steel and stainless steel etc. 钎焊铜及铜合金、钢及不锈钢等 BAg-5 L303F Flux coated rod 涂药丝 660-725 Ag45 Cu30 Zn Rem. L303 coated with flux, the same application as L303. 外涂钎剂的L303,用途与L303相同 BAg-5 L304 Foil 箔 690-775 Ag50 Cu34 Zn Rem. Brazing of copper, copper alloys and steel etc. 钎焊铜及铜合金、钢等 BAg-6 L308 Wire & rod 丝 779-780 Ag72 Cu Rem. Brazing of copper and nickel under vacuum or reducing protective atmosphere. 铜和镍的真空或还原保护气氛钎焊