Your cart is empty.
Your cart is empty.ERNiFe-CI (aka ERNI55) is a filler metal used for TIG and MIG welding of cast iron. It is also used to repair castings. The weld metal of ERNI55 is harder than that of ERNI99. A preheat and interpass temperature of 350 deg F minimum is recommended during welding, without which the weld and heat affected zones may develop cracks. Yield strength 62kpsi, Tensile strength 89kpsi, Elongation %, min 35. Product requires a shielding gas
Okinawa Machine Shop
August 12, 2025
With proper preheat, maintaining heat during the weld process, peening the weld after every pass, and a controlled cool down period with the part wrapped in welding blankets, the Blue Demon ErNi55 performed exceptionally well in this Rockwell double reduction axel repair. We welded in a machined mild steel replacement for the broken power steering lug with no cracking issues. The Blue Demon products have been terrific materials that help our job shop maintain a high level of quality and cost efficiency for our customers.
Ed
August 1, 2025
Filler rods worked well for the repair I was doing
Venture
July 26, 2025
Very good rods at a very low price. Melting rate is consistent.No fracturing while cooling and it makes a nice clean looking weld.
Melvin Moore
July 10, 2025
Worked very well for the cast iron that I was welding
Customer
January 31, 2025
Great price
Recommended Products
$32.47
$ 16 .99 $16.99