Engineers and scientists often use units gigapascals or newtons per square millimeter to describe the strength and elasticity of materials. Yield stress, the force it takes to permanently bend a material, measures one type of material strength. It typically has units of N/mm^2, sometimes called MPa. Young's modulus measures elasticity, the amount of force a material can take before it breaks or becomes permanently bent, and has units of gigapascals, or GPa. A material with high elasticity usually has a high yield stress. Because they represent related material properties, learn to convert between GPa and N/mm^2.
Items you will need
Set up a unit conversion between GPa and N/mm^2. There are 1,000 MPa in 1 GPa and 1 N/mm^2 per MPa, so for 3 GPa, for example, the conversion is (3 GPa)*(1,000 MPa/GPa)*(1 N/mm^2/MPa).
Multiply out the numbers and the units in the unit conversion. For example, (3 GPa)*(1,000 MPa/GPa)*(1 N/mm^2/MPa) = 3,000 GPa*MPa*N/GPa*MPa*mm^2.
Cancel like units out of the numerator and denominator. In 3,000 GPa*MPa*N/GPa*Mpa*mm^2, for example, GPa and MPa cancel, leaving 3,000 N/mm^2. Therefore, 3 GPa = 3,000 N/mm^2.
Style Your World With Color
Explore a range of cool greys with the year's top colors.View Article
Barack Obama's signature color may bring presidential power to your wardrobe.View Article
Let your clothes speak for themselves with this powerhouse hue.View Article
See how the colors in your closet help determine your mood.View Article
- Divide by 1,000 to convert from N/mm^2 to GPa.
- One GPa equals 1 kN/mm^2, so (1 GPa)*(1 kN/mm^2/GPa)*[(1,000 N/mm^2/kN/mm^2)] is an alternate unit conversion.