Effort Foundry Adds Austenitic Manganese Steel to Its
Austenitic Manganese Steel is a specialty steel that usually contains approximately 12% manganese.
Developed over 100 years ago and originally called “Hadfield Manganese Steel“ (after its discoverer, Sir Robert Hadfield), Manganese Steel is a versatile alloy with applications in the wear-resistant steel arena, as well as certain applications that require non-magnetic steel with initially high tensile properties under conditions where work-hardening is not induced in service, such as retaining rings for turbo alternators.
Properly heat treated by austenitizing, followed by water quenching, the grades listed in ASTM A128 (Fig. 1) produce a metastable austenite phase with a face-centered cubic lattice and strengthening from interstitial carbon and substitutional manganese (photomicrograph Fig. 2).
Heat-treated Type A produces a 0.2% offset yield strength – typically 40-50 ksi—with a Brinell hardness number of 240. Effort Foundry has concluded over 12 months of process controls to assure the manufacture of quality Manganese Steel. This includes new molding media, new core and mold washing techniques, analytical standards, furnace lining, and special ladles. In the cleaning/finishing departments, we have implemented special heat treatments, blasting, and qualified weld procedures.
Effort Foundry has produced impellers, wear-resistant parts, and turbine retaining rings from various grades of Manganese Steel.
Please contact our sales department to request a quote on this remarkable steel!