Mat.No. 1.0535, DIN C45, AISI 1055

Designation by Standards

Chemical Composition (in weight %)

Description C55 is a medium carbon steel is used when greater strength and hardness is desired than in the “as rolled” condition. Extreme size accuracy, straightness and concentricity combine to minimize wear in high speed applications. Turned, ground and polished. Applications Quenched and subsequently tempered steel for less exacting springs, shafts, bushings, crankshafts, etc. Physical properties (avarage values) at ambient temperature Modulus of elasticity [10³ x N/mm²]: 205 Density [g/cm³]: 7.85 Soft Annealing Heat to 650-700^oC, cool slowly. This will produce a maximum Brinell hardness of 229. Normalizing Temperature: 825-865^oC. Hardening Harden from a temperature of 805-845^oC followed by water or oil quenching. Tempering Tempering temperature: 550-660^oC. Mechanical Properties in Quenched+Tempered Condition

Diagram Tempering Temperature – Mechanical Properties Forging Hot forming temperature: 1050-850^oC. Machinability No data. Disclaimer The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other puposes. There is no representation that the recipient of this literature will receive updated editions as the become available.