Certified Company
DNV&ABSCertified Company
ISO 9001:2008R&D Production
In China
A 299 Grade B
A 299 Grade B material is SAE A 299/A 299M (2009) Pressure Vessel Plates, Carbon Steel, Manganese-Silicon Pressure Vessel Plates, Carbon Steel, Manganese-Silicon.
Chemical composition of A 299 Grade B, A 299 Grade B mechanical properties, A 299 Grade B datasheet, A 299 Grade B equivalent grade, Heat treatment and temperature process of A 299 Grade B.
A 299 Grade B property sheet
Related Materials
Chemical Composition of A 299 Grade B
| C: | 0.08 | 0.15 |
| Si: | Max | 0.75 |
| Mn: | 1.00 | 2.00 |
| P: | Max | Min |
| S: | Max | 0.03 |
| Ni: | 8.50 | 10.50 |
| Cr: | 27.00 | 31.00 |
| Al: | Max | Min |
| Cu: | Max | 0.50 |
| Ti: | Max | Min |
| Fe: | Max | Min |
| N: | Max | Min |
| Mo: | Max | 0.50 |
Mechanical Properties of A 299 Grade B
| Rp0.2 (MPa) | 287 (≥) |
| Rm (MPa) | 883 (≥) |
| AKV (J) | 43 |
| A (%) | 34 |
| Z (%) | 23 |
| Hardness | HBW 133 |
A 299 Grade B shape and dimensions
| A 299 Grade B Round bar: | 1mm-800mm |
| A 299 Grade B Square bar: | 10mm * 10mm-600mm *600mm |
| A 299 Grade B Flat bar: | Thickness:8mm-800mm Width:10mm to 1500mm |
| A 299 Grade B Sheet or Plate: | Thickness:3mm-80mm Width:1.5mm to 1500mm |
| A 299 Grade B Strip or Coil: | Thickness:0.1mm-3mm Width:1.5mm-1500mm |
| A 299 Grade B Forgings: | Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes |
©Longhai Special Steel 2025
