BISPLATE 80

is a high strength, low alloy steel plate with a yield stress three times of carbon steel and featuring low carbon, excellent notch toughness, good weldability and formability.

Application

Utilising the high strength properties of BISPLATE 80 allows reduction in ection thickness, without loss of structural integrity.

The following lists some applications where the strength advantage has been realized:

• Transport Equipment ( Low Loaders )
• Mining Equipment (Longwall Roof Supports/ Dump Truck Tray )
• High Rise Building ( Columns )
• Induced Draft Fans
• Excavator Buckets
• Lifting Equipment ( Mobile Cranes / Container Handling Equipment )
• Bridges
• Storage Tanks

Fabrication

BISPLATE 80 is a low alloy high stregthsteel manufactured with a controlled carbon equivalent for optimum weldability.

BISPLATE 80 can be successfully welded to itself and a range of other steels, provided low hydrogen consumables are used and attention is paid to pre-heat, interpass temperature, heat input and the degree of joint restraint.

Stress relieving can be achieved at 540ºC - 570ºC. Heating above this temperature should be avoided to minimize any adverse effects on mechanical properties. Cold forming can be successfully conducted, provided due account is taken of the increased strength of the steel.

Mechanical Properties

PROPERTIESSPECIFICATIONTYPICAL
0.2% Proof Stress 690 MPa (Min) 750 MPa
Tensile Strength 790 - 930 MPa 830 MPa
Elongation in 50mm G.L. 28% (Min) 26%

Charpy Impact (Longitudinal)
-40˚C (10 mm x 10 mm), 5 mm - 65 mm
-20˚C (10 mm x 10 mm), >65 mm - 100 mm

40 J (Min)*
40 J (Min)*
100 J
100 J
Hardness -
255 HB

 

Chemical Composition

THICKNESS (mm)   WEIGHT %CPMnSiSCrMoBCE
(IIW)**
CET**
5 - <8  Maximum 0.18 0.025 1.2 0.25 0.008 0.25 0.25 0.002 0.40 0.29

≥8 - <30

 Maximum 0.18 0.025 1.0 0.60 0.008 1.00 0.25 0.002 0.44 0.26
≥30 - 80  Maximum 0.18 0.025 1.3 0.60 0.008 1.00 0.25 0.002 0.54 0.32
 >80 - 100  Maximum  0.18  0.025  1.5 0.60 0.008 1.20 0.25 0.002 0.58 0.34


**Typical average