Steel Е55 (NEPRA)
|Designation GOST Cyrillic||Е55|
|Designation GOST Latin||E55|
|By chemical elements||Se55|
|Designation GOST Cyrillic||НИПРА|
|Designation GOST Latin||HIPPA|
|By chemical elements||НИPB|
Е55 steel is used: for the production of hot-rolled and forged bars and rods, designed for the manufacture of parts transport and tractor and agricultural machinery manufactured by hot forming, the subsequent mechanical machining and hardening with heating HDTV.
Discapacitadas steel machining.
|Bars and shapes||В32||EAST 62-144-63, TU ЧМЗ-64-67, TU 14-1-1314-75|
According to the UTU 62-144-63 titanium is introduced at the rate of 0.60% without taking into account the burnout. With the consent of the parties, steel is melted with additional micro-alloying with nitrogen (N) or rare, or rare-earth metals. Method of microalloying and content of elements with NIIM.
According to TU ChMZ-64-67 titanium (Ti) is introduced at the rate of 0.040% without taking into account the fumes. The content of selenium (Se) is calculated. The sum of Mn + Cr + Ni (Manganese + Chrome + Nickel) in steelmaking is not higher than 0.55%. In some cases, with the consent of the parties, steel can be smelted with the replacement of selenium (Se) with rare-earth metals. The technology of microalloying is coordinated with NIIM (Chelyabinsk).
According to TU 14-1-1314-75 titanium (Ti) is introduced at the rate of 0.040% without taking into account the burnout. The content of selenium (Se) is calculated. The sum of Mn + Cr + Ni (Manganese + Chrome + Nickel) in steelmaking is not higher than 0.55%.
|Macrostructure and pollution||Metal on the other CMP-64-67 comes with the normalized grain size of austenite, the score of which should not exceed 6 when tested according to GOST 5639.|
|Particularities of production of goods||Rods, strips and rods for INFORMATION 62-144-63 the CMP-64-67 are supplied depending on the order in vysokoopasnye or thermally unprocessed state.|
|Sediment||Steel on the other CMP-64-67 and its surface is 62-144-63 ispytyvaet on sediment in the hot state in accordance with GOST 8817.|
|Hardenability||On the other CMP-64-67, the hardenability according to GOST 5657. The hardenability of steel at HRc=40 must not exceed 4.0 mm. the results of the hardenability optional but must be specified in the certificates.|