Cast Iron Gas Welding Rod Product Name: Cast Iron Gas Welding Rod Product Specification: 4.0-8.0 Product Model: Z401411402 Product Category: Cast Iron Welding Rod Detailed Information: Z411 Cast Iron Gas Welding Rod: Square Cast Iron Core Welding Rod. The weld becomes gray cast iron during slow cooling, but its crack resistance is poor. The price of this welding rod is low. When the weld seam is slowly cooled, it can become gray cast iron. Used for welding and repairing defects in gray cast iron parts. Purpose: Mainly used for repairing and processing gray cast iron parts such as casting, textile accessories, fabric accessories, mechanical gears, welding gray cast iron and other black metals and their alloys! Chemical composition of deposited metal (%): C 2.00-4.00 Mn ≤ 0.75 Si 2.50-6.50 S ≤ 0.10 P ≤ 0.15 Fe. Reference current: (AC or DC+) electrode diameter (mm) 4.0 welding current (A) 120-200. After welding, it is relatively hard, wear-resistant, and difficult to process.