400HBW hardened high toughness low alloy steel ballistic plate for blast protection
General Product Description
The steel for blast protection.
400HBW ballistic steel is a medium-hard steel for blast protection, available in thicknesses of 2‑30 mm (0.078‑1.18″) and delivering a hardness of 360‑460 HBW.
400HBW ballistic steel is available as cut-to-length sheet in thicknesses of 2‑12 mm (0.0.78‑0.472″) and as plate in thicknesses of 6‑30 mm (0.236‑1.18″). It is not intended for further heat treatment.
Dimension Range
400HBW ballistic steel is available as cut-to-length sheet in thickness between 2.0 - 12.0 mm, and as plate in thickness between 6.0 - 30.0 mm.
Mechanical Properties
Thickness (mm) | Hardness (HBW) |
2.0 - 30.0 | 360- 460 |
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 | Ni | Mo | B |
0.20 | 0.70 | 1.50 | 0.020 | 0.010 | 1.00 | 0.50 | 0.50 | 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 | 2.00 - 3.00 | - 0.0 / + 0.32 |
Cut Length | 3.01 - 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 |
Cut Length | 6.01 – 6.50 | - 0.0 / + 0.34 |
Cut Length | 6.51 – 8.00 | - 0.0 / + 0.50 |
Cut Length | 8.01 – 10.00 | - 0.0 / + 0.57 |
Cut Length | 10.01 – 12.00 | - 0.0 / + 0.61 |
Heavy Plate | ||
Product Type | Thickness (mm) | Tolerance (Min / Max) |
Heavy Plate | 6.0 - 7.9 | - 0.0 / + 0.8 |
Heavy Plate | 8.0 - 14.9 | - 0.0 / + 1.0 |
Heavy Plate | 15.0 – 24.9 | - 0.0 / + 1.2 |
Heavy Plate | 25.0 - 30.0 | - 0.0 / + 1.4 |
Length and Width
Sheets are delivered with mill edges cut as standard.
• Tolerances conform to EN 10051
Plate delivered according to VANFORGE’s dimension program.
• Tolerances conform to EN 10029.
• Dimensional tolerances for plate with mill edge according to special agreement.
Flatness
Tolerances according to EN 10029 Class N (steel type L)
Cut Length | ||
Product Type | Thickness (mm) | 1000 ruler (mm) |
Cut Length | 2.00 - 3.00 | 6 |
Cut Length | 3.01 - 4.00 | 6 |
Cut Length | 4.01 - 5.00 | 6 |
Cut Length | 5.01 - 6.00 | 6 |
Cut Length | 6.01 – 6.50 | 6 |
Cut Length | 6.51 – 8.00 | 6 |
Cut Length | 8.01 – 10.00 | 6 |
Cut Length | 10.01 – 12.00 | 6 |
Heavy Plate | ||
Product Type | Thickness (mm) | 1000 ruler (mm) |
Heavy Plate | 6.0 - 7.9 | 6 |
Heavy Plate | 8.0 - 14.9 | 6 |
Heavy Plate | 15.0 – 24.9 | 6 |
Heavy Plate | 25.0 - 30.0 | 6 |
Shape
Tolerances for plate according to EN 10029. Tolerances for Sheet according to EN 10051.
Surface Properties
According to EN 10163-2 Class B subclass 3.
Delivery Conditions
400HBW ballistic steel is delivered in quenched condition.
Fabrication and Other Recommendations
Welding, bending and machining
400HBW ballistic steel is not intended for further heat treatment. If 400HBW ballistic steel is heated above 180 °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