Mat.No. 1.1213, DIN Cf53, AISI 1055

Designation by Standards

Chemical Composition (in weight %)

Description Unalloyed structural carbon steel. Applications Steels for superficial hardening: Piston bolts, chain bolts, gear shafts, gear wheels, worms and camshafts. Physical properties (avarage values) at ambient temperature Modulus of elasticity [10³ x N/mm²]: 210 Density [g/cm³]: 7.84 Soft Annealing Heat to 650-700^oC, cool slowly. This will produce a maximum Brinell hardness of 223. Normalizing Temperature: 830-860^oC. Stress Relieving Stress relieving to remove machining stresses should be carried out by heating to 120-200^oC, holding for one hour at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment. Hardening Harden from a temperature of 810-845^oC followed by oil or water quenching. Hardness after quenching is 57-62 HRC. Tempering Tempering temperature: 550-660^oC. Mechanical Properties in Hardened+Tempered Condition

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.