A5.7:ERCuNi铜镍焊丝 SG-CuNi30Fe 2.0837 CuNi70/30 特点及用途：氩弧焊丝（GTAW），用于含30%Ni以下的类似合金基金属的对接焊和堆焊，亦可用于有钯合金和其他不同特性ERCuNi铜镍焊丝CuNi30Fe气保焊丝 钢材的焊接。得益于其优异的抗海水性能，该焊条特别适用于海上焊接应用及海水脱盐，造船及化工等。 四、镍铬钴钼合金                                                                                                                                                                                                                                                                                                                    AWS DTN 1736 DIN1733 EN1600 母材型号 适合焊接的合金型号