By Shape

By Grades

Comparisons

Finish

Maintenance

Q500q STEEL – STRUCTURAL STEEL

Q500q STEEL – STRUCTURAL STEEL

Q500q is a high-strength structural steel commonly used in heavy-duty construction projects like bridges and high-rise buildings. The “Q” in its name stands for “Quenching,” a heat treatment process that enhances the steel’s strength and toughness. The number “500” represents its minimum yield strength of 500 MPa, ensuring it can handle significant loads. This steel is known for its excellent mechanical properties, including high tensile strength, good toughness, and resistance to impact and fatigue.

Description

What is Q500q

Q500q steel is composed of approximately 97-99% iron and 1-3% alloying elements such as carbon, manganese, silicon, and chromium. It is typically available in solid, flat, or plate forms and is commonly used in a greyish metallic color. Q500q is known for its high strength, good toughness, and excellent fatigue resistance. It is primarily used in fields like bridge construction, high-rise buildings, and heavy machinery. The steel is processed through hot rolling, which enhances its mechanical properties. Q500q steel can be further classified into subgrades based on thickness and mechanical requirements, such as Q500qC, Q500qD, and Q500qE.

Characteristics of Q500q Steel

Q500q steel is highly valued for its exceptional load-bearing capacity, making it ideal for heavy-duty structures like bridges and skyscrapers. It offers superior corrosion resistance, especially in harsh environments such as offshore platforms. Its high toughness allows it to withstand significant impacts, making it suitable for heavy machinery and high-rise buildings. With an optimal strength-to-weight ratio, Q500q steel supports efficient and cost-effective designs. Its versatility across various applications, from bridge components to critical infrastructure, and reliability under extreme conditions.

Chemical Compositions

ElementPercentage (%)
Carbon (C)0.18 max
Silicon (Si)0.50 max
Manganese (Mn)1.00 – 1.60
Phosphorus (P)0.030 max
Sulfur (S)0.030 max
Chromium (Cr)0.30 max
Nickel (Ni)0.50 max
Copper (Cu)0.30 max
Vanadium (V)0.10 max
Molybdenum (Mo)0.10 max
Niobium (Nb)0.07 max

Physical Properties

PropertyMetricImperial
Density7.85 g/cm³0.283 lb/in³
Melting Point1425-1460°C2597-2660°F
Thermal Conductivity50.2 W/m·K29 Btu·ft/h·ft²·°F
Specific Heat Capacity486 J/kg·K0.116 Btu/lb·°F
Thermal Expansion Coefficient11.7 × 10⁻⁶ /°C6.5 × 10⁻⁶ /°F
Electrical Resistivity0.2 µΩ·m0.12 µΩ·ft

Mechanical Properties

PropertyMetricImperial
Tensile Strength520-680 MPa75,400-98,600 psi
Yield Strength420 MPa60,900 psi
Brinell Hardness (HB)170-210 HB170-210 HB
Rockwell Hardness (HRC)20-25 HRC20-25 HRC
Vickers Hardness (HV)180-220 HV180-220 HV
Elongation16-20%16-20%
Elastic Modulus200 GPa29,000 ksi

After QT processing, Q500q steel exhibits the following typical mechanical properties:

PropertyMetricImperial
Tensile Strength580-720 MPa84,200-104,400 psi
Yield Strength500-600 MPa72,500-87,000 psi
Impact Toughness≥ 34 J (at -20°C)≥ 25 ft·lbf (at -4°F)
Elongation15-18%15-18%
Reduction of Area≥ 55%≥ 55%
Elastic Modulus200 GPa29,000 ksi

Industries & Applications

IndustryProducts
AutomotiveChassis Components, Structural Frames, Suspension Systems, Reinforcement Bars
Bridge ConstructionGirders, Trusses, Deck Plates, Pylons
Critical InfrastructurePower Plant Boilers, Offshore Platform Legs, Refinery Piping, Chemical Plant Frames
Heavy Machinery and EquipmentExcavator Arms, Bulldozer Blades, Crane Booms, Loader Frames
High-Rise BuildingsColumns, Beams, Braces, Reinforced Concrete Cores
ShipbuildingHull Plates, Bulkheads, Frames, Decks
RailwayRails, Bridges, Track Components, Wheel Assemblies
MiningMining Truck Frames, Drilling Equipment, Conveyor Systems, Ore Crushers

Machining

Q500q Heat Treating Instructions:

  1. Quenching: The steel is rapidly cooled from a high temperature to lock in a hard microstructure.
  2. Tempering: The steel is reheated to a lower temperature to reduce brittleness and improve ductility.
  3. Controlled Parameters: Specific temperatures and times are carefully chosen based on the desired mechanical properties.

Q500q Surface Finish:

  1. Hot-Dip Galvanizing: The steel is coated with zinc to enhance corrosion resistance.
  2. Painting: Provides both protection and an aesthetic finish, customizable in color and texture.
  3. Powder Coating/Anodizing: Additional protective coatings that enhance durability and resistance to environmental damage.
  4. Custom Surface Treatments: Other surface finishes can be applied based on specific application requirements.

Custom grades of Q500q steel can be produced to meet specific requirements.

Our Service

SteelPRO Group – manufacturer and solution provider for special steel, offering multi-industry application solutions and customised services, 100% quality free, accompanying customers in their growth!

Our Quality Control

  • Roundness
  • Tolerance
  • Microstructure
  • Non-Destructive Testing
  • Destructive Testing
  • Process Control

Service Integration Processing

  • Welding
  • Metal Fabrication
  • CNC Machining
  • Lathe
  • Forming

QUESTION 1

Lorem ipsum dolor sit amet, consectetur adipisicing elit. Optio, neque qui velit. Magni dolorum quidem ipsam eligendi, totam, facilis laudantium cum accusamus ullam voluptatibus commodi numquam, error, est. Ea, consequatur.

QUESTION 2

Lorem ipsum dolor sit amet, consectetur adipisicing elit. Optio, neque qui velit. Magni dolorum quidem ipsam eligendi, totam, facilis laudantium cum accusamus ullam voluptatibus commodi numquam, error, est. Ea, consequatur.

QUESTION 3

Lorem ipsum dolor sit amet, consectetur adipisicing elit. Optio, neque qui velit. Magni dolorum quidem ipsam eligendi, totam, facilis laudantium cum accusamus ullam voluptatibus commodi numquam, error, est. Ea, consequatur.

QUESTION 4

Lorem ipsum dolor sit amet, consectetur adipisicing elit. Optio, neque qui velit. Magni dolorum quidem ipsam eligendi, totam, facilis laudantium cum accusamus ullam voluptatibus commodi numquam, error, est. Ea, consequatur.

QUESTION 4

Lorem ipsum dolor sit amet, consectetur adipisicing elit. Optio, neque qui velit. Magni dolorum quidem ipsam eligendi, totam, facilis laudantium cum accusamus ullam voluptatibus commodi numquam, error, est. Ea, consequatur.

CONTACT

Please enable JavaScript in your browser to complete this form.

CONTACT

Please enable JavaScript in your browser to complete this form.

Certifications

Other Products

Scroll to Top

Send Message

Please enable JavaScript in your browser to complete this form.
Receive our related cases

Subscribe to our case study

As reference to your projects!
Case study Page 1
Case study Page 2
Case study Page 3
Case study Page 4
Case study Page 5
Case study Page 6
Case study Page 7
Case study Page 8
Case study Page 9
Case study Page 10
Case study Page 11
Case study Page 12
Case study Page 13