High Strength Low-Alloy (HSLA) steel, or Microalloyed Steel, is a type of steel designed to provide better mechanical properties and better resistance to atmospheric corrosion compared to common carbon steel.
In the form of sheet or plate, HSLA steel has a low carbon content ranging from <0,2%, so they can be easily formed (formability) and welded (readability) but have higher strength compared to steel in general.
HSLA steels usually have Manganese content of up to 2.0%.
Other ingredients commonly added to HSLA steel are chromium, nickel, molybdenum, copper, nitrogen, vanadium, niobium, titanium, and zirconium to enhance the desired mechanical and chemical properties.
Manufacturability
- High Strength to weight ratio
- Improved low temperature toughness
- Fatigue resistance
- High temperature creep resistance
- Atmospheric corrosion resistance
- Improved notch toughness
- Weldability
- Formability
Success Stories
Tiong Seng Hub - 1st Project on Grade 600
Benefits
STEEL SAVINGS
Potential to reduce steel reinforcement by up to 20% compared to Grade 500 steel.
MANPOWER - STEEL FIXING / INSTALLATION
Up to 20% less workers are required to install / fix steel reinforcement onsite.
LOGISTICS
Logistics Up to 20% less trucks delivering reinforcements to site - frees up site space and saves crane, manpower, and time.
SITE CRANE
Handles up to 20% less steel and frees up time for other construction activities thereby speeding up construction.
CONCRETE SAVINGS
Reduction in structural element size is possible when used with appropriate grade of concrete and results in overall dead load being reduced.
MORE USABLE SPACE
More floor space is usable with column size reduction.
LESS FORMWORK
Possible to reduce formwork needed for Columns and Beams due to member sized reduction.
LIGHTER FOUNDATIONS
Due to reduction in members size resulting in lighter super structure, foundation loads and cost can be reduced.
STORAGE SPACE
Space required for site storage of steel reinforcement can be reduced by up to 20%.
IMPROVED SAFETY
Site safety will be improved due to less material handling, steel fixing, etc.
TIME REDUCTION
Overall time savings can be accomplished by factoring in the earlier stated benefits.
COST REDUCTION
Overall cost reduction can be achieved from reduced material, manpower, construction time etc
ENVIRONMENT
Reduced construction noise, fuel consumption, etc.
Mechanical Properties
Strength more than 500 MPa
Ratio UTS/Yield : >1,25
Higher Srength/Density Ratio than common carbon steel.
A: Medium Carbon Steel
B: HSLA Steel
C: High Carbon Steel
HSLA Steel Yield & Tensile Strength compared to other type of steel.
Economic Benefits
HSLA Steel Yield & Tensile Strength compared to other type of steel.
Lower project construction cost (example lower weld and crance costs)
Availability of Domestic HSLA Steel Production (Indonesia) and support Indonesian Government making 4.0 program (HSLA Steel 4.0).
HSLA Steel is an Eco-Friendly Steel
