J.w. Harris 505061/2pop 50/50sws 1/8x8oz Spool

With some exceptions, these tin-lead solders can be used to join copper and most copper alloys, lead, nickel alloys and steel. Tin-lead solders are not recommended for joints subject to high stress or vibration in the cooling industry due to lack of sufficient elongation properties. These solders are also available with rosin or acid core. Note: It is illegal to use lead solders in both public and private potable water systems.