Address:Zhengzhou city in China.
Phone:0086-371-86151827
Email:
Q345D is a kind of low alloy steel plate, in the national standard GB/T1591-2008.
Q345D plate without oxide film on the metal liquid surface condition, gas to the velocity dispersions of metals, Q345D plate and metal thickness is inversely proportional, and inversely proportional to the square root of the gas pressure, and increases with decreasing temperature and increasing dissolved gas in metal is by adsorption, dispersion, and dissolved into the metal, but important on dissolution rate in dispersion speed. Because hydrogen is comparative simple elementary gas, the atoms or molecules are very small, easily soluble in the metal, at low temperature also easily agile dispersion. So hydrogen is an easily dissolved in the metal gas.
GB/T1591 Q345D Steel Chemical Composition (%)
| Grade | Chemical Composition (%) | ||||
| C | Mn≥ | Si | P | S | |
| GB/T1591 Q345D | 0.18 | 1.70 | 0.50 | 0.035 | 0.035 |
GB/T1591 Q345D Steel Mechanical Property:
| Grade | Mechanical Property | |||
| Tensile Strength(MPa) | Yield Strength(MPa) | % Elongation in 2 in.(50mm) min | Impacting Test Temperature(°C) | |
| GB/T1591 Q345D | 470-630 | 345 | 21 | -20 |
Q345D plate Additional Condition:
UT (Ultrasonic examination),AR(As Hot Rolled only),TMCP(Thermal Mechanical Control Processing),N(Normalized),Q+T(Quenched and Tempered),Z Direction Test(Z15,Z25,Z35), Charpy V-Notch Impact Test, HIC test, NDT ,PWHT( Simulated Post Weld Heat Treatment),NACE0175,The Third Party Test (Such as SGS Test), Coated or Shot Blasting and Painting.
BBN STEEL Carbon Plate Factory are specialized in exporting GB-T1591 Q345D Low alloy and high strength steel plate, heavy plate and wide, heavy plate.
Address: Zhengzhou city in China.
Phone: 0086-371-86151827
Email: 
