The Pascal, named after the French mathematician and physicist Blaise Pascal, is the SI unit of pressure. It is equivalent to one newton per square meter, symbolized as Pa. Despite its relatively recent introduction in 1971, the Pascal honors the pioneering work of Pascal in fluid mechanics and pressure, such as Pascal’s Law, which explains how pressure applied to a confined fluid is transmitted undiminished in all directions. Interestingly, a single Pascal is a tiny unit of pressure, roughly equal to the pressure exerted by a dollar bill resting flat on a table. This illustrates why everyday atmospheric pressure is typically measured in kilopascals (kPa), as one standard atmosphere is about 101.3 kPa.
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.
Pascals | Kilopound per square inch |
---|---|
0
Pa
|
0
ksi
|
1000
Pa
|
0.000145038
ksi
|
2000
Pa
|
0.000290075
ksi
|
3000
Pa
|
0.000435113
ksi
|
4000
Pa
|
0.000580151
ksi
|
5000
Pa
|
0.000725188
ksi
|
6000
Pa
|
0.000870226
ksi
|
7000
Pa
|
0.00101526
ksi
|
8000
Pa
|
0.0011603
ksi
|
9000
Pa
|
0.00130534
ksi
|
10000
Pa
|
0.00145038
ksi
|
11000
Pa
|
0.00159541
ksi
|
12000
Pa
|
0.00174045
ksi
|
13000
Pa
|
0.00188549
ksi
|
14000
Pa
|
0.00203053
ksi
|
15000
Pa
|
0.00217557
ksi
|
16000
Pa
|
0.0023206
ksi
|
17000
Pa
|
0.00246564
ksi
|
18000
Pa
|
0.00261068
ksi
|
19000
Pa
|
0.00275572
ksi
|
20000
Pa
|
0.00290075
ksi
|
21000
Pa
|
0.00304579
ksi
|
22000
Pa
|
0.00319083
ksi
|
23000
Pa
|
0.00333587
ksi
|
24000
Pa
|
0.0034809
ksi
|
25000
Pa
|
0.00362594
ksi
|
26000
Pa
|
0.00377098
ksi
|
27000
Pa
|
0.00391602
ksi
|
28000
Pa
|
0.00406106
ksi
|
29000
Pa
|
0.00420609
ksi
|
30000
Pa
|
0.00435113
ksi
|
31000
Pa
|
0.00449617
ksi
|
32000
Pa
|
0.00464121
ksi
|
33000
Pa
|
0.00478624
ksi
|
34000
Pa
|
0.00493128
ksi
|
35000
Pa
|
0.00507632
ksi
|
36000
Pa
|
0.00522136
ksi
|
37000
Pa
|
0.00536639
ksi
|
38000
Pa
|
0.00551143
ksi
|
39000
Pa
|
0.00565647
ksi
|
40000
Pa
|
0.00580151
ksi
|
41000
Pa
|
0.00594654
ksi
|
42000
Pa
|
0.00609158
ksi
|
43000
Pa
|
0.00623662
ksi
|
44000
Pa
|
0.00638166
ksi
|
45000
Pa
|
0.0065267
ksi
|
46000
Pa
|
0.00667173
ksi
|
47000
Pa
|
0.00681677
ksi
|
48000
Pa
|
0.00696181
ksi
|
49000
Pa
|
0.00710685
ksi
|
50000
Pa
|
0.00725188
ksi
|
51000
Pa
|
0.00739692
ksi
|
52000
Pa
|
0.00754196
ksi
|
53000
Pa
|
0.007687
ksi
|
54000
Pa
|
0.00783203
ksi
|
55000
Pa
|
0.00797707
ksi
|
56000
Pa
|
0.00812211
ksi
|
57000
Pa
|
0.00826715
ksi
|
58000
Pa
|
0.00841219
ksi
|
59000
Pa
|
0.00855722
ksi
|
60000
Pa
|
0.00870226
ksi
|
61000
Pa
|
0.0088473
ksi
|
62000
Pa
|
0.00899234
ksi
|
63000
Pa
|
0.00913737
ksi
|
64000
Pa
|
0.00928241
ksi
|
65000
Pa
|
0.00942745
ksi
|
66000
Pa
|
0.00957249
ksi
|
67000
Pa
|
0.00971752
ksi
|
68000
Pa
|
0.00986256
ksi
|
69000
Pa
|
0.0100076
ksi
|
70000
Pa
|
0.0101526
ksi
|
71000
Pa
|
0.0102977
ksi
|
72000
Pa
|
0.0104427
ksi
|
73000
Pa
|
0.0105878
ksi
|
74000
Pa
|
0.0107328
ksi
|
75000
Pa
|
0.0108778
ksi
|
76000
Pa
|
0.0110229
ksi
|
77000
Pa
|
0.0111679
ksi
|
78000
Pa
|
0.0113129
ksi
|
79000
Pa
|
0.011458
ksi
|
80000
Pa
|
0.011603
ksi
|
81000
Pa
|
0.0117481
ksi
|
82000
Pa
|
0.0118931
ksi
|
83000
Pa
|
0.0120381
ksi
|
84000
Pa
|
0.0121832
ksi
|
85000
Pa
|
0.0123282
ksi
|
86000
Pa
|
0.0124732
ksi
|
87000
Pa
|
0.0126183
ksi
|
88000
Pa
|
0.0127633
ksi
|
89000
Pa
|
0.0129084
ksi
|
90000
Pa
|
0.0130534
ksi
|
91000
Pa
|
0.0131984
ksi
|
92000
Pa
|
0.0133435
ksi
|
93000
Pa
|
0.0134885
ksi
|
94000
Pa
|
0.0136335
ksi
|
95000
Pa
|
0.0137786
ksi
|
96000
Pa
|
0.0139236
ksi
|
97000
Pa
|
0.0140687
ksi
|
98000
Pa
|
0.0142137
ksi
|
99000
Pa
|
0.0143587
ksi
|
100000
Pa
|
0.0145038
ksi
|
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