Steel 12ХН3МД (АБ2; 12ХН3МДФ)
|Designation GOST Cyrillic||12ХН3МД|
|Designation GOST Latin||12XH3MD|
|By chemical elements||12CrН3MoCu|
|Designation GOST Cyrillic||АБ2|
|Designation GOST Latin||AB2|
|By chemical elements||-|
|Designation GOST Cyrillic||12ХН3МДФ|
|Designation GOST Latin||12XH3MDF|
|By chemical elements||12CrН3MoCuV|
12ХН3МД steel is used: for the manufacture of parts and welded structures marine technical structures and installations for ships and floating drilling rigs that are supplied under the supervision of the shipping Register.
Steel with increased resistance to layered tears.
|Sheets and strips||В33||TU 14-1-3824-84, TU 14-1-4622-89, TU 5.961-11571-95|
According to TU 14-1-4622-89 the chemical composition is given for steel 12ХН2МД-Ш. Vanadium and aluminum are introduced by calculation. The content of vanadium, aluminum and calcium is optional. Vanadium and calcium are calculated and injected into steel without correction for carbon monoxide. The deviation of the vanadium content from the established rate is not a sign of marriage. Allowed the introduction of calcium in combination with barium in the amount of 0.030%. The content of calcium (calcium and barium) is not controlled. In the initial metal, the following is allowed: deviation of the mass fraction of carbon ± 0.010%; an increase in the mass fraction of aluminum by 0.010%.
According to TU 14-1-3824-84 the chemical composition is given for steel 12ХН2МД-Ш (АБ2-Ш). The content of vanadium and aluminum is optional, but is indicated in the certificate. The calcium content is optional. Calcium and molybdenum are introduced by calculation. Deviations in chemical composition - in accordance with GOST 4543.
|Section, mm||sT|s0,2, MPa||σU, MPa||d5, %||y, %|
|Sheet hire (31-70 mm) in heat-treated condition (Zalka+ high holidays), on the other 14-1-4622-89|
|Rolled plates in the state of delivery on the other 14-1-3824-84. Quenching + High holidays|
Description mechanical marks
|sT|s0,2||Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%|
|σU||Limit short-term strength|
|d5||Elongation after rupture|
|y||The relative narrowing|