A tensile test, also known as tension test, is probably the most fundamental type of mechanical test that can perform on material. This test is simple, relatively inexpensive, and fully standardized. By pulling on something, we can very quickly determine how the material will react to forces being applied in tension. As the material is being pulled, we will find its strength along with how much it will elongate. As we continue to pull on the material until it breaks, we will obtain a good, complete tensile profile. A curve will result showing how it reacted to the forces being applied. The point of failure is of much interest and is typically called its 'ultimate strength' or UTS on the chart. This test measures the force required to break a specimen and the extent to which the specimen stretches or elongates to that breaking point. This test produces a stress-strain diagram, which is used to determine tensile modulus. The data is often used to specify a material, to design parts to withstand application force and as a quality control check of materials. Since the physical properties of many materials (especially thermoplastics) can vary depending on ambient temperature, it is sometimes appropriate to test materials at temperatures that simulate the intended end use environment.