Provoloka 60c2a, Dnipropetrovsk region.

Главное the purpose of this roll is derived from the name - the production of springs. The spring parts made of 60c2a wire are characterized by high endurance and resistance to loads. Manufacturing methods - cold or hot winding.
The wire intended for cold-winding springs is marked - ХН, for hot - ГН.(//tractor-service.com)
Popular cross-section diameters have become sizes from 0.8 mm to 6 mm.
The maximum operating temperature of finished springs made of steel 60c2a should not exceed 250ºС.
Finished parts are subject to mandatory hardening and tempering to acquire the necessary characteristics. During heat treatment of finished springs, the requirements should be strictly adhered to in order to prevent decarburization.