Product/Service

Weller Chromium Iron - 26

Source: A.J. Weller Corporation
Castings of Weller Chromium Iron-26 excels other commonly used wear-resistant metals and alloys in many applications involving extreme abrasion without undue shock.
Abrasion Resistant Casting

Castings of Weller Chromium Iron-26 excels other commonly used wear-resistant metals and alloys in many applications involving extreme abrasion without undue shock. These castings do not spall and they have a fair resistance to corrosion. Because of the comparative superiority of Weller Chromium Iron-26 over other wear-resistant materials and its desirable manufacturing features, this material is being used with great success in many industries.

Industrial Applications

Oil Drilling - Sludge Pump Liners - Valve Disc
Power Generation - Crushing Hammers - Pulverizer Liners- Chute Liners
Pulp and Paper - Transition Liners - Pump Liners - Elbows
Ceramic - Pug-Mill Knives - Runner Plates - Muller Tires
Dredging - Front and Back Liners for Dredge Pumps
Coal and Ore Handling - Screening-Pump Impellers-Chute Liners
Cement - Hammers - Induction Fan Casing - Nozzles

Extensive tests were run on this material by the Ohio State University Engineering Station and the Union Carbide Corporation supporting the above data. ASTM Designation: A-532-67 Types 11 and 111.

Representative Mechanical Properties

*Transverse Strength..............................6,000 to 8,000 lbs.
*Deflection Strength...............................0.10 to 0.15 inches
Tensile Strength.................................55,000 to 75,000 psi
Brinell Hardness................................................500 to 550
*As determined on test bars 1.2 inches in diameter, 14 inches long and cast vertically in dry molds. Distance between supporting edges is 12 edges.

Microstructure

Weller Chromium Iron-26 white iron excels other commonly used wear-resistant metals and alloys in most applications involving extreme abrasion. It's superiority is a direct result of its microstructure. When examined under a microscope, these castings are seen to be a network of chromium carbides in a matrix of martensite and austenite or steel. While chromium is a hard metal, chromium carbides are far harder than any metal. Combining a strong metal (steel) with a super-hard substance (chromium carbides) provides the greatest resistance to abrasion of any material available at commercially-acceptable prices.
High-chrome white irons are a family of alloys with chromium contents ranging 14-28%. They are available with various other alloying ingredients and different heat treatments. Best results are achieved when Weller's engineers and the customer cooperate closely to find the one best alloy for the customer's needs.