Coppernickel,goodmachinabilityandbadcrackresistance.Repairweldingofsandholeandgraycastironmachinedsurfacesubjecttonoload.镍铜，易加工，但抗裂性较差。不受力的灰铸铁加工面及砂眼补焊Coppernickel,goodmachinabilityandbadcrackresistance.Repairweldingofsandholeandgraycastironmachinedsurfacesubjecttonoload.镍铜，易加工，但抗裂性较差。不受力的灰铸铁加工面及砂眼补焊Coppernickel,goodmachinabilityandbadcrackresistance.Repairweldingofsandholeandgraycastironmachinedsurfacesubjecttonoload.镍铜，易加工，但抗裂性较差。不受力的灰铸铁加工面及砂眼补焊Coppernickel,goodmachinabilityandbadcrackresistance.Repairweldingofsandholeandgraycastironmachinedsurfacesubjecttonoload.镍铜，易加工，但抗裂性较差。不受力的灰铸铁加工面及砂眼补焊Coppernickel,goodmachinabilityandbadcrackresistance.Repairweldingofsandholeandgraycastironmachinedsurfacesubjecttonoload.镍铜，易加工，但抗裂性较差。不受力的灰铸铁加工面及砂眼补焊)