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Executive Standard: SA299 Gr. B steel plates comply with the ASME standard, specifically ASTM A299/A299M.2026-08-26
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SA299 is a carbon-manganese-silicon steel plate designed for pressure vessels—often referred to as "gas drum steel" under US standards.2026-08-19
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ntroduction to SA299 Gr.A Steel Plate:
SA299 Gr.A is a steel plate grade designated for boilers and pressure vessels under American standards.2026-08-11 -
A285 Gr.C and SA285 Gr.C steel plates represent the same grade, though they are governed by different standards.2026-08-04
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SA283 Gr.B is a low-to-medium strength carbon structural steel plate conforming to the American Society of Mechanical Engineers (ASME) standard.2026-07-31
Wholesale quality S45C Carbon steel plate

S45C steel is non-alloyed medium carbon steel. S45C steel plates’ carbon chemical composition is 0.42-0.48%. It is under the JIS G4051 standard.
S45C carbon steel specification:
Thickness: 1mm-200mm
Width: 1000mm-4000mm
Length: 2000mm-12000mm
Chemical Composition of S45C Carbon steel plate Max(%):
|
Grade
|
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Cu |
|
S45C |
0.42-0.50 |
0.17-0.37 |
0.50-0.80 |
0.035 |
0.035 |
0.25 |
0.25 |
0.25 |
S45C Carbon steel plate mechanical properties:
Tensile Strength σb(MPa) |
Yield Strength |
Elon-Gation Ration |
Reduction of area |
Impact merit |
Resilient value |
Degree of |
Annealed |
Test Specimen |
|
≥600 |
≥355 |
≥16 |
≥40 |
≥39 |
≥49 |
≤229HB |
≤197HB |
25 |
The S45C steel plate has reliable mechanical property, good formability and excellent welding performance, which is widely used in various industries.Such as architecture, bridge construction, marine craft, ail-way locomotive, heavy machine and other structure parts.

