High temperature yield strength of pressure cast steel for British standard room temperature and high temperature
High temperature yield strength (HTS) refers to the temperature at which steel can sustain a specified resistance to rupture, regardless of load. In other words, it is the maximum amount of strain which can be applied to a metal before it starts to break. This strain is usually represented as a percentage of the metals ultimate tensile strength (UTS). It is usually expressed in MPa(MegaPascal), the unit for pressure of force.
High temperature yield strength of pressure cast steel for British standard room temperature and high temperature is an important mechanical property which is used to determine the resistance of metal to deformation at high temperatures. British standard HTS tests involve subjecting metal samples to a range of temperatures and observing the results. For example, a metal that is resistant at room temperature could be tested at a range of up to 1050°C.
To measure the HTS of pressure cast steel, a specimen is first prepared, typically by running it through a range of temperatures. The temperature range generally extends from room temperature to 1050°C. A specific load is then applied to the sample while it is held at the set temperature. The amount of strain, or deformation, at the given load is then noted. This test is repeated at different temperatures until a graph of load versus strain is obtained.
The yield strength is determined by finding the intersection of the strain and load curves, which is generally called the yield point. The yield strength is then calculated as the load at which the specimen starts to deform beyond a predetermined amount (usually 0.2% strain). The higher the load (in MPa), the higher the yield strength of the steel.
In order to convert the yield strength of pressure cast steel from MPa to ksi, the yield strength value is simply multiplied by 0.1450. This conversion converts the yield strength value from MPa to ksi.
For pressure cast steel intended for use in British standard conditions, the yield strength must be at least 70 MPa at room temperature and 36 MPa at 1050°C. Pressure cast steel intended for use in high temperatures must have a minimum of 45 MPa at room temperature and 30 MPa at 1050°C. In addition, the percentage elongation of the steel must be at least 12% at room temperature and 5% at 1050°C.
In summary, pressure cast steel intended for use in British standard conditions or high temperatures must meet certain criteria for yield strength, depending on the temperature being tested. The higher the yield strength of the steel, the more resistant it is to deformation. Furthermore, the percentage elongation of the steel must be at least 12% at room temperature and 5% at 1050°C to ensure that it meets the specified criteria.
