Armor plate with 2000 MPA-graded tensile strength, and manufacturing method therefor
AssigneeBaoshan Iron & Steel Co., Ltd.
InventorsXiaoting Zhao, Fengbin Li, Liandeng Yai, Hongbin Li
Life of this patent
Estimating the term…
Abstract
A bulletproof steel plate with a tensile strength of 2000 MPa grade and a Brinell Hardness of 600 grade and a manufacturing method thereof, characterized by that the chemical elements in mass percentage thereof being: 0.35-0.45% of C, 0.80-1.60% of Si, 0.3-1.0% of Mn, 0.02-0.06% of Al, 0.3-1.2% of Ni, 0.30-1.00% of Cr, 0.20-0.80% of Mo, 0.20-0.60% of Cu, 0.01-0.05% of Ti, 0.001-0.003% of B, and the balance being Fe and inevitable impurities. The tensile strength of the steel plate can reach a grade of 2000 MPa and its Brinell Hardness can reach a grade of 600.
Claims7
A bulletproof steel plate with a tensile strength of greater than 2000 MPa and a Brinell Hardness of greater than or equal to 587 MPa, said bulletproof steel plate consisting of the chemical elements in mass percentage thereof being:
- 0.35-0.45% of C, 0.80-1.60% of Si, 0.3-1.0% of Mn, 0.02-0.06% of Al, 0.3-1.2% of Ni, 0.30-1.00% of Cr, 0.20-0.80% of Mo, 0.20-0.60% of Cu, 0.01-0.05% of Ti, 0.001-0.003% of B, and the balance being Fe and inevitable impurities;
- and
- wherein the microstructure of the bulletproof steel plate consists of tempered martensite and less than 1% residual austenite.
Dependencies are inferred from the claim text.