High Strength Mechanical Steel Plate, Q690d Q690e Qste500, BS700mck2, LG700te, Q690e

• After-sales Service: 10 Years
• Warranty: 10 Years
• Standard: ASTM
• Model NO.: pm
• Certification: ISO
• Surface Treatment: Blackface
• Technique: Hot Rolled
• Application: Mold & Dies, Ship Plate, Boiler Plate, Container Plate
• Special Use: Cutting Tools, Measuring Tools, High-strength Steel Plate, Wear Resistant Steel
• Stock: Stock
• Transport Package: Export Packaging
• Specification: 0.5mm-5.0mm
• Trademark: promisteel
• Origin: China
• HS Code: 72085120
• Production Capacity: 5000

Product Description

Product Description

Q690D is a high-strength low-alloy (HSLA) steel plate widely used in structural applications that require enhanced mechanical properties. It is known for its excellent weldability, high tensile strength, and good performance under harsh conditions. This steel grade is particularly suited for the manufacturing of bridges, construction machinery, and vehicles that require high load-bearing capacities



 

Key Properties:

• Tensile Strength: The tensile strength of Q690D steel is typically in the range of 690 MPa, making it suitable for demanding applications where high strength is critical.
• Yield Strength: Q690D has a yield strength of approximately 690 MPa, which ensures its ability to withstand significant stress without permanent deformation.
• Impact Toughness: The D-grade of Q690 steel is specifically designed for low-temperature impact toughness, making it well-suited for use in cold environments where materials may become brittle.
• Weldability: Q690D offers excellent weldability due to its low carbon content and controlled alloying elements, making it easy to join using standard welding processes without compromising strength.
• Corrosion Resistance: While not as resistant to corrosion as stainless steels, Q690D has good performance in mild to moderate environmental conditions

 

Chemical Composition:

• Carbon (C): ≤ 0.20%
• Manganese (Mn): 1.20%-1.60%
• Silicon (Si): ≤ 0.50%
• Nickel (Ni): ≤ 0.60%
• Chromium (Cr): ≤ 0.80%
• Molybdenum (Mo): ≤ 0.30%
• Vanadium (V): ≤ 0.10%

Mechanical Properties:

• Tensile Strength: 690 MPa (min)
• Yield Strength: 690 MPa (min)
• Elongation (in 8mm): ≥ 16%
• Impact Toughness (at -20°C): ≥ 27J

Standard Specifications:

• Chinese Standard: GB/T 1591-2008 (Q690D)
• Equivalent Standards:
  • JIS G3106: SM570 (similar grade in Japan)
  • EN: S690QL (similar grade in Europe)

Advantages:

1. High Strength: Q690D offers superior strength compared to conventional carbon steels, providing better performance in load-bearing applications.
2. Improved Durability: The alloy composition helps to enhance its toughness and resistance to wear, making it suitable for heavy-duty environments.
3. Versatility: It can be used in a wide range of industries, including construction, mining, and transportation, with applications in both static and dynamic load scenarios.

Conclusion: Q690D high-strength alloy steel plate is an ideal choice for heavy-duty structural applications where high strength, durability, and toughness are essential. Its ability to withstand high stress and harsh conditions, combined with excellent weldability, makes it a reliable material for use in demanding industries such as construction, mining, and transportation.

 

Product Parameters

Parameter

Description

Typical Range / Value

Thickness

The thickness of the steel plate.

6mm - 100mm

Width

The width of the steel plate.

1500mm - 3000mm

Length

The length of the steel plate.

6000mm - 12000mm

Packaging & Shipping

Company Profile