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Mat.No. 1.1213/DIN Cf53/AISI 1055

Mat.No. 1.1213/DIN Cf53/AISI 1055 is a carbon structural steel with low mechanical strength, good plasticity and toughness. It is easy to be molded and machined in cold state, and has good welding performance. In order to improve the surface hardness, carburizing and cyaniding can be carried out. It is used to manufacture welding parts, cold stamping parts, forgings and carburized parts with low strength, such as bolts, washers, diaphragms, shells, etc.
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  • Mat.No. 1.1213/DIN Cf53/AISI 1055

Unalloyed structural carbon steel

Designation by Standards

Mat. No.DINENAISI
1.1213Cf53-1055


Chemical Composition (in weight %)

CSiMnCrMoNiVWOthers
0.530.250.55------


Applications
Steels for superficial hardening: Piston bolts, chain bolts, gear shafts, gear wheels, worms and camshafts.


Physical properties (average values) at ambient temperature

Modulus of elasticity [103 x N/mm2]: 210
Density [g/cm3]: 7.84 


Soft Annealing

Heat to 650-700oC, cool slowly. This will produce a maximum Brinell hardness of 223.

Normalizing

Temperature: 830-860oC. 


Stress Relieving

Stress relieving to remove machining stresses should be carried out by heating to 120-200oC, 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 810-845oC followed by oil or water quenching. Hardness after quenching is 57-62 HRC. 


Tempering

Tempering temperature: 550-660oC. 


Mechanical Properties in Hardened+Tempered Condition

Diameter (mm)0.2% proof stress (N/mm2)Tensile strength (N/mm2)Elongation (%)Reduction (%)
up to 16510740-8801225
17-40430690-8301435
41-100400640-7801540


Forging
Hot forming temperature: 1050-850oC.

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 purposes. There is no representation that the recipient of this literature will receive updated editions as it becomes available.


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