Bisalloy 80 High Strength Structural Steel
Bisalloy 80 is a high-strength, low-alloy structural steel with a yield stress three times greater than that of carbon steel. It therefore boasts optimum toughness, hardness, density, formability and weldability.
Utilising the high-strength steel properties of BIS 80 allows section thickness to be reduced whilst maintaining structural integrity. The strength advantage of BIS 80 also means equipment can be manufactured with an overall lighter structural steel weight without sacrificing structural strength. This has been realised in a number of applications, including:
- Transport equipment (low loaders)
- Lifting equipment (mobile cranes/container handling equipment)
- Mining equipment (dump truck trays/longwall roof supports)
- High-rise buildings (columns)
- Bridges
- Excavator buckets
- Storage tanks
- Induced draft fans
BISPLATE’s structural steel grades make it possible to build taller towers, specify smaller columns, and span larger rooms – whilst simultaneously reducing the amount of steel required. This reduced frame weight enables cost savings for foundations, fabrication and construction.
| Hardness (Typical) | Tensile | Charpy V-Notch Impact | |||||||
| Plate Thickness (mm) |
Brinell Hardness (HB 3000/10) |
Plate Thick ness (mm) |
0.2% Proof Stress (MPa) Min |
Tensile Strength (MPa) |
% Elongation (50 mm G.L) Min |
Plate Thickness (mm) |
Energy (J) (Min) |
Test Temp. (˚C) |
Test Directions |
| 5 – 100 | 255 | 5 6 – 65 70 – 100 |
650 690 620 |
750 – 900 790 – 930 720 – 900 |
18 18 16 |
5 | By Agmnt | -40 | L |
| 6 – <8.5 | 20 | -40 | L | ||||||
| 8.5 – <12 | 30 | -40 | L | ||||||
| 12 – <60 | 40 | -40 | L | ||||||
| 60 – 100 | 40 | -20 | L | ||||||
Chemical Composition
| Thickness (mm) |
Weight % | C | P | Mn | Si | S | Cr | Mo | B | CE(IIW)* | CET* |
| 6 – <30 | Maximum | 0.18 | 0.025 | 1.2 | 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
PLEASE NOTE: Every care has been taken to ensure the accuracy of information contained in these tables. Typical values are provided for reference information only and no guarantee is given that a specific plate will provide these properties. Information is subject to change without notice.
Buy BISPLATE with Australian Steel Today
As leading Bisalloy steel suppliers, Australian Steel stocks BIS 80 in many different plate sizes, as well as offering a number of other BISPLATE products to suit your particular needs, specifications and applications. These products comply with Australian steel grades and are complemented by a wide range of services to get your BIS 80 steel ready for its intended application, including profile cutting, pre-cutting and post-cutting services. For more information on our Bisalloy 80 products and services, call us today on (03) 9580 2200.