Steel 80 products

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Characteristics of steel grade 80

Steel grade 80 is a structural spring steel that meets the requirements of GOST 14959.

Classification: Structural spring steel.

Products: Round and plate springs and other parts operating under friction and vibration loads.

 

Chemical composition of steel grade 80 based on heat analysis, %

С Si Mn S P Cr
0,77 - 0,85      0,17 - 0,37 0,50 - 0,80

≤0,025

≤0,025

≤0,25

 

Approximate conditions for thermal treatment and mechanical properties of steel 80 (GOST 14959)

Quenching temperature, ºС

Quenching media

Tempering temperature, ºС

Yield strength, N/mm2 (min)

Tensile strength, N/mm2 (min)

Elongation, % (min)

Reduction of area, % (min)

820

Oil

470

930

1080

8

30

 

Analogues

USA

1080, G10780, G10800

Japan

SUP3

EU

C80D

 

Application

Steel grade 80 is used in the production of round and plate springs and parts operating under conditions of increased friction and under the influence of vibration loads; knives of earthmoving machines (bulldozers, scrapers, graders and motor graders), as well as other machine parts used in the hardened and tempered condition.

 

Welding

Steel grade 80 is not used for welded products.  

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