The kilopound per square inch (ksi) is a unit of pressure that is not as commonly encountered as its smaller counterpart, pounds per square inch (psi). However, it plays a crucial role in engineering and materials science, particularly in the United States, where it is often used to express the tensile strength and yield strength of materials like steel. One ksi is equal to 1,000 psi, making it a convenient way to express large values of pressure or stress without cumbersome zeros.
Interestingly, ksi is commonly used in the context of measuring the mechanical properties of metals, especially in aerospace and automotive industries. These are fields where precise and robust materials are essential for safety and performance. For instance, typical structural steel can have a yield strength on the order of 50 ksi, underscoring the immense stress materials can withstand in such applications. Understanding these units helps engineers ensure that the materials used can handle the demanding conditions they face.
The millibar, a unit of pressure, traces its origins back to the 1800s when it was introduced by the meteorologists Henry H. Hilderbrandsson and Vagn Walfrid Ekman. Used primarily in meteorology, the millibar found its place in daily weather reports around the world. Measuring atmospheric pressure in thousands, one millibar equates to 100 pascals in the SI system, providing a convenient scale for understanding variations in atmospheric conditions.
Intriguingly, the typical sea-level atmospheric pressure is about 1013 millibars. This is the weight of the air around us, controlled by a delicate balance of gases and climatic factors. During severe weather events, such as hurricanes, the central pressure can drastically drop to around 920 millibars, signifying powerful winds and storms. This makes the millibar not just a scientific measure, but a crucial tool for predicting and understanding weather patterns.
Kilopound per square inch | Millibar |
---|---|
0
ksi
|
0
mbar
|
0.1
ksi
|
6894.76
mbar
|
0.2
ksi
|
13789.52
mbar
|
0.3
ksi
|
20684.28
mbar
|
0.4
ksi
|
27579.04
mbar
|
0.5
ksi
|
34473.8
mbar
|
0.6
ksi
|
41368.56
mbar
|
0.7
ksi
|
48263.32
mbar
|
0.8
ksi
|
55158.08
mbar
|
0.9
ksi
|
62052.84
mbar
|
1
ksi
|
68947.6
mbar
|
1.1
ksi
|
75842.36
mbar
|
1.2
ksi
|
82737.12001
mbar
|
1.3
ksi
|
89631.88001
mbar
|
1.4
ksi
|
96526.64001
mbar
|
1.5
ksi
|
103421.40001
mbar
|
1.6
ksi
|
110316.16001
mbar
|
1.7
ksi
|
117210.92001
mbar
|
1.8
ksi
|
124105.68001
mbar
|
1.9
ksi
|
131000.44001
mbar
|
2
ksi
|
137895.20001
mbar
|
2.1
ksi
|
144789.96001
mbar
|
2.2
ksi
|
151684.72001
mbar
|
2.3
ksi
|
158579.48001
mbar
|
2.4
ksi
|
165474.24001
mbar
|
2.5
ksi
|
172369.00001
mbar
|
2.6
ksi
|
179263.76001
mbar
|
2.7
ksi
|
186158.52001
mbar
|
2.8
ksi
|
193053.28001
mbar
|
2.9
ksi
|
199948.04001
mbar
|
3
ksi
|
206842.80001
mbar
|
3.1
ksi
|
213737.56001
mbar
|
3.2
ksi
|
220632.32001
mbar
|
3.3
ksi
|
227527.08001
mbar
|
3.4
ksi
|
234421.84002
mbar
|
3.5
ksi
|
241316.60002
mbar
|
3.6
ksi
|
248211.36002
mbar
|
3.7
ksi
|
255106.12002
mbar
|
3.8
ksi
|
262000.88002
mbar
|
3.9
ksi
|
268895.64002
mbar
|
4
ksi
|
275790.40002
mbar
|
4.1
ksi
|
282685.16002
mbar
|
4.2
ksi
|
289579.92002
mbar
|
4.3
ksi
|
296474.68002
mbar
|
4.4
ksi
|
303369.44002
mbar
|
4.5
ksi
|
310264.20002
mbar
|
4.6
ksi
|
317158.96002
mbar
|
4.7
ksi
|
324053.72002
mbar
|
4.8
ksi
|
330948.48002
mbar
|
4.9
ksi
|
337843.24002
mbar
|
5
ksi
|
344738.00002
mbar
|
5.1
ksi
|
351632.76002
mbar
|
5.2
ksi
|
358527.52002
mbar
|
5.3
ksi
|
365422.28002
mbar
|
5.4
ksi
|
372317.04002
mbar
|
5.5
ksi
|
379211.80002
mbar
|
5.6
ksi
|
386106.56003
mbar
|
5.7
ksi
|
393001.32003
mbar
|
5.8
ksi
|
399896.08003
mbar
|
5.9
ksi
|
406790.84003
mbar
|
6
ksi
|
413685.60003
mbar
|
6.1
ksi
|
420580.36003
mbar
|
6.2
ksi
|
427475.12003
mbar
|
6.3
ksi
|
434369.88003
mbar
|
6.4
ksi
|
441264.64003
mbar
|
6.5
ksi
|
448159.40003
mbar
|
6.6
ksi
|
455054.16003
mbar
|
6.7
ksi
|
461948.92003
mbar
|
6.8
ksi
|
468843.68003
mbar
|
6.9
ksi
|
475738.44003
mbar
|
7
ksi
|
482633.20003
mbar
|
7.1
ksi
|
489527.96003
mbar
|
7.2
ksi
|
496422.72003
mbar
|
7.3
ksi
|
503317.48003
mbar
|
7.4
ksi
|
510212.24003
mbar
|
7.5
ksi
|
517107.00003
mbar
|
7.6
ksi
|
524001.76003
mbar
|
7.7
ksi
|
530896.52003
mbar
|
7.8
ksi
|
537791.28004
mbar
|
7.9
ksi
|
544686.04004
mbar
|
8
ksi
|
551580.80004
mbar
|
8.1
ksi
|
558475.56004
mbar
|
8.2
ksi
|
565370.32004
mbar
|
8.3
ksi
|
572265.08004
mbar
|
8.4
ksi
|
579159.84004
mbar
|
8.5
ksi
|
586054.60004
mbar
|
8.6
ksi
|
592949.36004
mbar
|
8.7
ksi
|
599844.12004
mbar
|
8.8
ksi
|
606738.88004
mbar
|
8.9
ksi
|
613633.64004
mbar
|
9
ksi
|
620528.40004
mbar
|
9.1
ksi
|
627423.16004
mbar
|
9.2
ksi
|
634317.92004
mbar
|
9.3
ksi
|
641212.68004
mbar
|
9.4
ksi
|
648107.44004
mbar
|
9.5
ksi
|
655002.20004
mbar
|
9.6
ksi
|
661896.96004
mbar
|
9.7
ksi
|
668791.72004
mbar
|
9.8
ksi
|
675686.48004
mbar
|
9.9
ksi
|
682581.24004
mbar
|
10
ksi
|
689476.00005
mbar
|
If you like the website, share it on social media.