What is S690Q equivalent to ？

What is S690Q equivalent to ?

S690Q is a high-yield strength structural steel (EN 10025-6) with equivalents like ASTM A709 Grade 100, German TStE690V (DIN), French E690T (AFNOR), and proprietary grades such as DILLIMAX 690, NAXTRA 70, and WELDOX 700, all characterized by minimum 690 MPa yield strength and excellent toughness after quenching and tempering (Q&T) for heavy load applications. The "L" in S690QL signifies lower-temperature impact testing (-40°C) for enhanced cold-weather toughness,

S690Q is a high-strength low alloy (HSLA) structural steel plate specifically designed for high-load applications. Produced in compliance with the European standard EN 10025-6, it is primarily used in the construction of bridges, machinery, and pressure vessels where a high strength-to-weight ratio is required. The material must undergo a specific heat treatment process-quenching and tempering (Q+T)-which ensures its high yield strength and structural integrity.

A defining characteristic of S690Q is its requirement for a low-temperature impact test. Unlike the "QL" or "QL1" variants which are tested at more extreme temperatures, S690Q is typically tested at -20°C, requiring a minimum impact energy (typically 30J).

This makes it highly effective for mechanical devices and structural elements that operate in moderately cold climates, such as:

Drilling and Mining: Drilling machines, mineral product automobiles, and electricity drive wheel counter-mine trolleys.

Heavy Construction: Excavators, car loaders, power shovels, and bulldozers
 

What is the hardness of S690Q?

The hardness of S690Q steel typically falls in the range of 228-278 HBW (Brinell Hardness) for thicknesses up to 50mm, and slightly lower, 225-276 HBW, for thicker plates (over 50mm to 100mm), reflecting its high-strength, quenched and tempered (Q+T) condition. This range provides a balance of strength (minimum yield of 690 MPa) and toughness for demanding structural applications.

What are Common Testing Requirements of S690Q?

Common testing requirements for S690Q high-strength steel, governed by EN 10025-6 standard, focus on mechanical properties (yield strength, tensile strength, elongation), low-temperature Charpy V-notch impact toughness at -20°C, and require Quenching and Tempering (Q+T) heat treatment, with supplementary tests like Ultrasonic Testing (UT) often included, and Mill Test Certificates (MTC) provided.

What is the price of S690q plate?

The price of S690Q steel plate varies significantly but generally ranges from $0.65 to over $1.35 USD per kilogram, depending on order volume, supplier, thickness, and market conditions, with bulk orders (100+ tons) often seeing prices around $1,000 - $1,200 USD per ton, while smaller quantities can be much higher per kilogram.

Chemical composition of S690Q steel according EN 10025-6, %

Mechanical properties of steel S690Q (1.8931)

Equivalent grades of steel S690Q (1.8931)

1What is the composition of S690Q?

S690Q is a high-strength, low-alloy steel (HSLA) defined by the EN 10025-6 standard, known for its 690 MPa yield strength after quenching and tempering, featuring controlled levels of Carbon (≤0.22%), Silicon (≤0.80%), Manganese (≤1.8%), with strengthening microalloying elements like Niobium, Vanadium, Titanium, Chromium, Molybdenum, and Nickel, ensuring good weldability for heavy-duty applications like bridges, cranes, and construction equipment.

2What are the typical application fields of S690Q?

S690Q is a high-strength structural steel used in applications requiring excellent strength-to-weight ratios, such as bridges, cranes, offshore platforms, heavy machinery, and high-rise buildings, allowing for lighter yet robust designs in construction and industrial equipment, especially where high stress and demanding conditions (like low temperatures) are present.

3What is s690 material specification?

S690 is a high-strength, low-alloy (HSLA) structural steel, typically specified under the European standard EN 10025 as S690QL or S690QL1, known for its excellent yield strength of 690 MPa, good weldability, and superior toughness, allowing for lighter designs in heavy machinery, cranes, bridges, and construction, with the 'QL' indicating quenching and tempering for enhanced properties.

4What are the primary advantages of this S690Q?

The primary advantages of S690Q steel are its extremely high strength (690 MPa yield), enabling lighter, leaner structures with reduced material use, and its excellent toughness, even at low temperatures, making it ideal for heavy-duty applications like cranes, bridges, and offshore structures, while also offering good fatigue resistance and weldability for demanding conditions.

5What is the difference between S690Q and Weldox 700?

S690Q and Weldox 700 are essentially the same type of high-strength, quenched and tempered (Q+T) structural steel, with Weldox 700 being a brand name (from SSAB) for the generic S690QL grade under European standards (EN 10025-6). The primary differences often lie in the specific manufacturer's slight variations in alloying or processing, but both offer excellent weldability, formability, and high yield strength (around 690 MPa), making them ideal for heavy-duty applications like construction machinery and bridges where strength and low weight are critical.

6What is the difference between S690q and S700mc ?

S690Q and S700MC are both high-strength structural steels with similar yield strengths (around 690-700 MPa), but S700MC (Thermomechanically Controlled Process) generally offers better ductility/formability, while S690Q (Quenched and Tempered) often has better weldability/toughness at lower temperatures due to its specific heat treatments, with S700MC also having variations like S700MC+ for extreme formability and toughness at -60°C.

7What is S690Q equivalent to material?

S690Q is a high-yield strength structural steel (EN 10025-6) with equivalents like ASTM A709 Grade 100, German TStE690V (DIN), French E690T (AFNOR), and proprietary grades such as DILLIMAX 690, NAXTRA 70, and WELDOX 700, all characterized by minimum 690 MPa yield strength and excellent toughness after quenching and tempering (Q&T) for heavy load applications. The "L" in S690QL signifies lower-temperature impact testing (-40°C) for enhanced cold-weather toughness.

Contact now

Full specification and details are available on request. The above information is provided for guidance purposes only. For specific design requirements please contact our technical sales staff