BISPLATE HHA 500
BISPLATE Armour HHA 500 steel is a quenched and tempered steel armour plate suitable for use in both military and civil applications where light weight and resistance to ballistic projectiles are required.
The chemical specification of BISPLATE Armour HHA 500 steel conforms to the requirements of MIL-DTL-46100, although tighter, so as to optimise the material’s performance.
Chemical analyses are taken on a per-heat basis.
BISPLATE Armour HHA 500 steel has a hardness range of 477 - 534 HBW with a nominal hardness of 500 HBW
APPLICATION
BISPLATE® High Impact Armour Plate Class 1 (BISPLATE® HIA Class 1) – a quenched and tempered steel armour plate, possessing very good weldability, suitable for use in both military and civil applications where high rates of shock loading and resistance to penetration by ballistic projectiles are required.
Brinell hardness
| THICKNESS (mm) | SPECIFICATION | TYPICAL |
|---|---|---|
| 5-50* |
477-534 HB | 500 HB |
*Other thicknesses may be available on request
Tensile properties
| PROPERTY | TYPICAL |
|---|---|
| 0.2% Proof Stress | 1350 MPa |
| Tensile Strength | 1640 MPa |
| Elongation in 50 mm GL | 14% |
Charpy impact values
| THICKNESS (mm) | TEST PIECE | TEST TEMP | MIN. ENERGY (TRANSVERSE) | MIN. ENERGY (LONGITUDINAL) |
|---|---|---|---|---|
| 5 | 10 x Thk | -40ºC | By Agreement | By Agreement |
| 6 - <9.5 | 10 x 5 | -40ºC | 8J | 10J |
| 9.5- <12 | 10 x 7.5 | -40ºC | 12J | 15J |
| ≥12 | 10 x 10 | -40ºC | 16J | 20J |
Chemistry
The chemical specification conforms to the requirements of MIL-DTL-46100, although it is tighter than the requirements of that specification so as to optimise the material’s performance. Product chemical analyses are taken on a per-heat basis. Chemical analysis is as follows:
Chemical composition
| THICKNESS (mm) | WEIGHT % | C | P | Mn | Si | S | Ni | Cr | Mo | B | CE (IIW)** | CET** |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5-501 |
Maximum | 0.32 | 0.025 | 0.80 | 0.50 | 0.005 | 0.50 | 1.20 | 0.30 | 0.002 | 0.61* | 0.40* |
**Note: Nickel and Vanadium are intentionally added **Typical average 1Other thicknesses may be available on request
Ballistic properties
| CLASS | CALIBRE | AMMUNITION | MEASURED VELOCITY @ DISTANCE FROM MUZZLE | RANGE | MINIMUM REQUIRED HHA THICKNESS |
|---|---|---|---|---|---|
| G2 | 44 Magnum | 15.6 g Lead Semi-Wad Cutter Bullet | 488 ± 10 m/s @ 1.5 m |
3 m | 6 mm |
| S0 | 12 Gauge (Full Choke) | 12 Gauge 70 mm High Velocity Magnum 32 g SG Shot | 403 ± 10 m/s @ 1.5 m | 3 m | 6 mm |
| S1 | 12 Gauge (Full Choke) | 12 Gauge 70 mm 24.8 g Single Slug | 477 ± 10 m/s @ 1.5 m | 3 m | 6 mm |
| R1 | 5.56 mm | M193 5.56 mm 3.6 g Full Metal Case Bullet | 980 ± 15 m/s @ 5 m | 10 m | 10 mm |
| R2 | 7.62 mm | Nato Standard 7.62 mm 9.3 g Full Metal Case Bullet | 853 ± 10 m/s @ 5 m | 10 m | 6 mm |
2 Standard thicknesses produced. Minimum thickness required is less than stated thickness. Please contact Bisalloy for further information.
Class G – Hand Gun, Class S – Shotgun Class, R – Rifles
