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Mat.No. 1.0402/DIN C22/AISI 1020

C22 is one of the very commonly used plain carbon steels. It has a nominal carbon content of 0.22% with approximately 0.55% manganese. It is a good combination of strength and ductility and may be hardened or carburized. Applications C22 steel is used for simple structural application such as cold headed bolts. It is often used in the case hardened condition.
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  • Mat.No. 1.0402/DIN C22/AISI 1020

C22 is one of the very commonly used plain carbon steels. It has a nominal carbon content of 0.22% with approximately 0.55% manganese. It is a good combination of strength and ductility and may be hardened or carburized.  Designation by Standards.

Mat. No.DINENAISI
1.0402C22-1020


Chemical Composition (in weight %)

CSiMnCrMoNiVWOthers
0.22max. 0.400.55max. 0.40max. 0.10max. 0.40--(Cr+Mo+Ni) = max. 0.63


Applications 
C22 steel is used for simple structural application such as cold headed bolts. It is often used in the case hardened condition.

 
Physical properties (avarage values) at ambient temperature 
Modulus of elasticity [103 x N/mm2]: 210  
Density [g/cm3]: 7.70 
Thermal conductivity [W/m.K]: 51.9  
Electric resistivity [Ohm mm2/m]: 0.11 
Specific heat capacity[J/g.K]: 0.46 

Soft Annealing 
Heat to 870-980oC, cool slowly. This will produce a minimum tensile strength of 450 Mpa. 

Stress Relieving 
Stress relieving to remove machining stresses should be carried out by heating to approx. 540oC, holding for 1-2 hours at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment. 

Hardening 
Harden from a temperature of 820-870oC followed by water quenching.

Tempering
Tempering temperature: Please ask.
Hot forming temperature: 1200-950
oC.

Machinability
Machinability is good at 65% compared to 1112 carbon steel as 100% baseline.

Corrosion Resistance
Not corrosion resistant. The steel will rust unless protected.

Welding
Readily weldable by all of the standard methods.

Cold working
C22 steel is readily cold worked by all conventional methods. A stress relief anneal may be needed after extensive cold work. 

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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