Steel 08ГДНЛ (SL-30)
|Designation GOST Cyrillic||08ГДНЛ|
|Designation GOST Latin||08GDHL|
|By chemical elements||08MnCuН|
|Designation GOST Cyrillic||СЛ-30|
|Designation GOST Latin||CL-30|
|By chemical elements||СBe-30|
08ГДНЛ steel is used: for the manufacture of litho-welded and composite structures, performance parts, requirements of high viscosity and of sufficient strength, operating at temperatures from -40 to +330 °C; different parts for shipbuilding section up to 400 mm.
Cold-resistant, dispersion-hardening steel of pearlitic class.
|Steel castings||В82||OST 5Р.9285-95|
According to OST 5R.9285-95, the content of chromium up to 0.50% and molybdenum up to 0.12% is not a defect sign provided that the requirements of the standard are observed and if there are no special instructions in the technical conditions of the order or drawing.
According to OST 5R.9285-95, in the case of steel smelted in the main electric furnaces as cold-resistant (technical conditions of the order or requirements of the drawing), the sulfur and phosphorus content should not be more than 0.020% of each. As agreed by the manufacturer with the developer OST 5P.9285-95 (CRI "Prometey"), the content of sulfur and phosphorus is allowed up to 0.030% of each.
In steel smelted in an open-hearth furnace, the carbon content is allowed not more than 0.12%, the content of sulfur and phosphorus is not more than 0.035% of each.
|sT|s0,2, MPa||σU, MPa||d||y, %||KCU, kJ/m2||HB, MPa|
|Castings for shipbuilding. 1-I Normalization at 930-970 °C + 2-I Normalization at 920-950 °C + vacation at 590-650 °C, air cooling|
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|
|d||Elongation after rupture|
|y||The relative narrowing|
|HB||Brinell hardness number|
|Weldability||welded without any restrictions. The welding process - SMAW. With a significant amount of welding it is recommended that subsequent vacation.|