SA299Gr.A and SA299Gr.B are carbon-manganese-silicon steel plates used for pressure vessels. These steels are specified in the ASME standard for C-Mn-Si steel used in boiler and pressure vessel plates.
Types Of SA299 Pressure Vessel Steel Plate From GNEE Steel Supply
- SA299 Grade A C-Mn-Si steel plates for pressure vessels
- SA299 GrB pressure vessel steel plate
Standards for SA299Gr.A and SA299Gr.B Boiler steel plate:
ASME SA-299/SA-299M specifies C-Mn-Si steel for boiler and pressure vessel plates.
SA299 Steel Plate Production Thickness Range and Delivery Conditions:
SA299Gr.A and SA299Gr.B steel plates are typically delivered in a normalized or hot-rolled condition.
For thicknesses over 50mm, they are generally delivered in a normalized condition.
SA299 Pressure Vessel Steel Pate Production Size:
Thickness: 4mm- 400mm;
Width: 1000mm- 4000mm;
Length: 4000mm- 12000mm.
Comparison of chemical compositions between SA299Gr.A and SA299Gr.B steel plates
| Element | SA299Gr.A ≤25mm | SA299Gr.A >25mm | SA299Gr.B ≤25mm | SA299Gr.B >25mm |
| C | ≤0.26 | ≤0.28 | ≤0.28 | ≤0.30 |
| Mn | 0.90-1.40 | 0.90-1.50 | 0.90-1.40 | 0.90-1.50 |
| Si | 0.15-0.40 | 0.13-0.45 | 0.15-0.40 | 0.13-0.45 |
| P | ≤0.035 | ≤0.035 | ≤0.035 | ≤0.035 |
| S | ≤0.035 | ≤0.035 | ≤0.035 | ≤0.035 |
Comparison of mechanical properties of SA299Gr.A and SA299Gr.B steel plates
| Property | SA299Gr.A | SA299Gr.B |
| Tensile Strength | 75-95 (515-655) MPa | 80-100 (550-690) MPa |
| Yield Strength (≤25mm) | ≥42 (290) MPa | ≥47 (325) MPa |
| Yield Strength (>25mm) | ≥40 (275) MPa | ≥45 (310) MPa |
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