Ksi To Mpa Converter
Convert material stress from kilopounds per square inch (ksi) to megapascals (MPa).
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Converting Material Strength: KSI to MPa
In materials science and engineering, accurately expressing stress and pressure is critical. Two of the most common units for this are kilopounds per square inch (ksi) and megapascals (MPa). Understanding how to convert between them is essential for professionals working with international standards and material specifications.
What is KSI?
KSI stands for "kilopounds per square inch" or, more formally, "kip per square inch." A "kip" is a unit of force equal to 1,000 pounds-force. Therefore, 1 ksi is equal to 1,000 pounds per square inch (PSI). The ksi unit is commonly used in the United States for describing the tensile strength, yield strength, and shear strength of materials like steel and other alloys.
What is MPa?
The megapascal (MPa) is a unit of pressure in the International System of Units (SI). It is equal to one million Pascals (Pa), where a Pascal is one Newton per square meter (N/m²). The MPa is the standard unit for material strength in most of the world and in scientific literature.
The Conversion Formula
The conversion between ksi and MPa is derived from the conversion between PSI and Pascals.
- 1 PSI ≈ 6,894.76 Pascals
- Since 1 ksi = 1,000 PSI, then 1 ksi = 1,000 × 6,894.76 Pa = 6,894,760 Pa.
- Since 1 MPa = 1,000,000 Pa, we can find the conversion factor.
1 ksi = 6,894,760 / 1,000,000 MPa ≈ 6.89476 MPa
Formulas:
- To convert from ksi to MPa: MPa = ksi × 6.89476
- To convert from MPa to ksi: ksi = MPa / 6.89476
Example:
A common grade of structural steel might have a yield strength of 50 ksi. Let's convert this to MPa.
- Using the formula: MPa = 50 ksi × 6.89476
- Result: ≈ 344.74 MPa
Common Material Strength Values
| KSI | Approx. MPa | Material Example |
|---|---|---|
| 36 ksi | 250 MPa | A36 Structural Steel (Yield Strength) |
| 50 ksi | 345 MPa | Grade 50 Steel (Yield Strength) |
| 60 ksi | 414 MPa | A615 Rebar (Yield Strength) |
| 105 ksi | 724 MPa | Alloy Steel Bolt (Tensile Strength) |
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