High Tensile Steel Sheet
Products Description High tensile steel sheet, also known as high-strength steel sheet, is a type of steel with superior mechanical properties, offering high strength, hardness, and durability. Different countries have developed various grades and specifications of high tensile steel sheets to...
Description
Products Description
Ht Steel Plate Strength Requirements
| Grade | Nominal Thickness t (milimeter) | ||
| Min. yield strength MPa, ReH | |||
| 100 < t ≤ 150 | 3 ≤ t ≤ 50 | 50 < t ≤ 100 | |
| S550Q | 490 | 550 | 530 |
| S620Q | 560 | 620 | 580 |
| S460Q | 400 | 460 | 440 |
| S890Q | 890 | 830 | |
| S960Q | 960 | ||
| S500Q | 440 | 500 | 480 |
| S690Q | 630 | 690 | 650 |
| Tensile strength MPa, Rm | |||
| S690Q | 710 to 900 | 760 to 930 | |
| S620Q | 650 to 830 | 700 to 890 | |
| S500Q | 540 to 720 | 590 to 770 | |
| S890Q | 880 to 1100 | ||
| S550Q | 590 to 770 | 640 to 820 | |
| S460Q | 500 to 670 | 550 to 720 | |
In Japan, Nippon Steel Corporation has developed the S-TEN series. S-TEN 1 has effective resistance to both sulfuric acid dew point corrosion and hydrochloric acid dew point corrosion, while S-TEN 2 is effectively resistant to sulfuric acid dew point corrosion. It shows the best resistance to sulfuric acid and hydrochloric acid dew-point corrosion found in the flue-gas treatment equipment used with coal-fired boilers, waste incineration plants, etc. S-TEN has strength, workability, and weldability comparable to ordinary steel, and it is more economical than stainless steel. Hot-rolled sheets (plates) of S-TEN conform to JIS G 3106 SM400A (S-TEN 1) and SM490A (S-TEN 2).
JFE Steel Corporation offers a lineup of high tensile strength steel plate. Their products span a tensile strength range from 590 to 980 N/mm². For example, JFE-HITEN 590 SA has a thickness of 6 to 40 mm, with a CEQ (carbon equivalent) of ≤0.45%, a yield strength of ≥450 MPa, and a tensile strength of 590 to 710 MPa. JFE-HITEN 780S has a thickness of 6 to 50 mm, a CEQ of ≤0.53%, a yield strength of ≥685 MPa (for t ≤75) or ≥665 MPa (for t > 75), and a tensile strength of 780 to 930 MPa. These steel plates also guarantee toughness at low temperatures. Additionally, JFE offers high-yield strength plate products like HYD 960 LE and HYD 1100 LE for applications requiring even greater strength.
In the United States, the HSLA-115 steel is used in the latest Ford-class aircraft carriers. It can withstand a pressure of up to 795 MPa, meaning that one square centimeter of the steel plate can bear an impact force of nearly 8 tons.
In the field of construction machinery, high tensile strength steel plates are also widely used. These plates have a carefully designed chemical composition to ensure excellent weldability. They can maintain toughness at low temperatures, making them suitable for construction machinery operating in extreme weather conditions.
China has also made significant progress in the research and production of high tensile steel sheets. For example, in the manufacturing of aircraft carriers, different parts may use various grades of high tensile steel sheets to meet specific requirements such as strength, toughness, and corrosion resistance.
The specific materials and properties of high tensile steel sheets can vary depending on the application and requirements of different industries. Manufacturers often conduct extensive research and development to continuously improve the performance and quality of these steel sheets to meet the evolving needs of modern engineering and construction. When choosing a high tensile steel sheet, factors such as the intended use, mechanical requirements, environmental conditions, and manufacturing processes need to be carefully considered to ensure the selected material is suitable for the specific application.
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