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)
SPECIFICATIONTYPICAL
5-50*
477-534 HB 500 HB


*Other thicknesses may be available on request

Tensile properties

PROPERTYTYPICAL
0.2% Proof Stress 1350 MPa
 Tensile Strength  1640 MPa
Elongation in 50 mm GL  14% 

 

Charpy impact values

THICKNESS (mm)TEST PIECETEST 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 %CPMnSiSNiCrMoBCE
(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 CALIBREAMMUNITION MEASURED VELOCITY
@ DISTANCE FROM MUZZLE
RANGEMINIMUM 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