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Boiler Quality or Pressure Vessel Plates are produce to make a superior quality carbon steel plate which have consistent controlled properties and are designed to withstand the internal pressure of pressure vessels, boilers and valves . Boiler quality or Pressure Vessel Steel Plates are very popular due to its diversity of use and longevity.
Characteristics
Uniform surfaceHigh tensile strengthCorrosion resistanceSturdy constructionTemperature resistance.
ASTM A 516 or ASME SA 516 grade is one of the most popular steel grades.
It is primarily intended for use in welded pressure vessels where notch toughness is important.These grades cover a range of tensile strengths from 55 - 90 MPa and this versatility explains much of the specifications popularity.
For plates thinner than 40mm normally supply as rolled. Plates above 40mm thick are normalised. For A 516 grade 70, which is one of most popular steels, the ASME standard composition is as follows (dependent on grade).
ASTM A516 Standard steel plates are intended for use in pressure vessels where increased strength is is important.
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ASTM A516 Chemical Properties (Cast Analysis)
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| C |
Mn |
P max |
S max |
Si max |
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t < 12.5
mm |
12.5mm < t =50mm |
50mm < t ≤ 100mm |
100mm < t ≤ 200mm |
t < 200
mm |
t < 12.5
mm |
t 12s.5
mm |
| A516 Grade 60 |
0.21 |
0.23 |
0.25 |
0.27 |
0.27 |
06-09 |
0.85-1.2 |
0.035 |
0.035 |
0.15-0.4 |
| A516 Grade 70 |
0.27 |
0.28 |
0.3 |
0.31 |
0.31 |
0.85-1.2 |
0.85-1.2 |
0.035 |
0.035 |
0.15-0.4 |
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ASTM A516 Mechanical Properties
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Tensile Strength (ksi) |
Tensile Strength (MPa) |
Yield Strength (ksi) |
Yield Strength (MPa) |
Elongation in 200mm(%) |
Elongation in 50mm(%) |
| A516 Grade 60 |
60-80 |
415-550 |
32 |
220 |
21 |
25 |
| A516 Grade 70 |
70-90 |
485-620 |
38 |
260 |
17 |
21 |
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