300HBW hardening high strength low alloy steel ballistic steel plate
General Product Description
The low-alloy protection plate.
300HBW ballistic steel is a low-alloy protection plate, available as sheet in thicknesses of 3‑6 mm (0.118‑0.236″) and delivering a hardness of 260‑320HBW.
300HBW ballistic steel is not intended for further heat treatment.
Dimension Range
300HBW ballistic steel is available as cut-to-length sheet in thickness between 3.0-6.0 mm.
Mechanical Properties
| Thickness (mm) | Hardness (HBW) |
| 3.0 - 6.0 | 260 - 320 |
Mechanical Testing
Brinell hardness test according to EN ISO 6506-1 on each heat treatment individual/coil.
Hardness is measured on a milled surface 0.3-2 mm below plate surface.
Chemical Composition (ladle analysis), %, max
| C | Si | Mn | P | S | Cr | Mo | B |
| 0.20 | 0.50 | 2.0 | 0.030 | 0.010 | 0.80 | 0.30 | 0.005 |
The steel is grain-refined.
Phosphorous and sulphur are not intentionally alloying elements.
Thickness
| Cut Length |
| Product Type | Thickness (mm) | Tolerance (Min / Max) |
| Cut length | 3.00 - 4.00 | - 0.0 / + 0.36 |
| Cut length | 4.01 - 5.00 | - 0.0 / + 0.40 |
| Cut length | 5.01 - 6.00 | - 0.0 / + 0.42 |
Length and Width
Tolerances according to EN 10051. Sheets are delivered with mill edges cut as standard.
Flatness
| Cut Length |
| Product Type | Thickness (mm) | 1000 ruler (mm) |
| Cut length | 3.00 - 4.00 | 6 |
| Cut length | 4.01 - 5.00 | 6 |
| Cut length | 5.01 - 6.00 | 6 |
Shape
Tolerances according to EN 10051.
Surface Properties
According to EN 10163-2 Class B subclass 3.
Delivery Conditions
300HBW ballistic steel is delivered in quenched condition.
Fabrication and Other Recommendations
Welding, bending and machining
300HBW ballistic steel is not intended for further heat treatment. If 300HBW ballistic steel is heated above 150 °C after delivery from VANFORGE no guarantees for the properties are given.
Appropriate health and safety precautions must be taken when cutting, welding, grinding or otherwise working on the product. Grinding, especially of primer coated plates, may produce dust with high particle concentration.
Production process
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300HBW High Mechanical Quenched And Tempered Steel Plate Smooth Surface Images
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