ROCKSTAR 400/450/500

SRK International is a leading stockist and distributor of high-quality S690QL / WELDOX 700 Plates. With our commitment to providing reliable supply and exceptional service, we are a trusted name in the industry.

S690QL / WELDOX 700 Plates are made from high-strength structural steel that offers outstanding strength, toughness, and impact resistance. These plates are widely used in industries such as mining, construction, and heavy machinery, where superior strength and durability are required.

The S690QL / WELDOX 700 Plates offer several key features:

Exceptional Strength: These plates have a high yield strength, making them suitable for applications where superior strength is essential. They provide structural integrity and durability, even in demanding environments.

Excellent Toughness: S690QL / WELDOX 700 Plates possess excellent toughness, allowing them to withstand heavy impact and shock loads. They can absorb energy and deform without fracturing, ensuring reliable performance in challenging conditions.

Superior Weldability: These plates offer excellent weldability, enabling efficient and reliable welding processes. This feature allows for easy fabrication and assembly, ensuring smooth manufacturing processes.

Formability: S690QL / WELDOX 700 Plates have good formability, allowing for easy shaping and forming according to specific project requirements. They can be cut, bent, and machined to achieve the desired shape and size.

Wide Range of Sizes and Grades: SRK International offers a comprehensive range of S690QL / WELDOX 700 Plates in different sizes, thicknesses, and grades to meet the diverse needs of our customers. This wide selection ensures that you can find the right plate to suit your specific project requirements.

Reliable Supply: As a reputable stockist and distributor, SRK International ensures a consistent and reliable supply of S690QL / WELDOX 700 Plates. We maintain a well-stocked inventory and partner with trusted manufacturers to meet the immediate requirements of our customers.

Our dedicated team of professionals is committed to providing excellent customer service. We work closely with clients to understand their specific needs and offer tailored solutions. Whether you require S690QL / WELDOX 700 Plates for heavy machinery, structural components, or general fabrication, we have the expertise to provide you with the right products for your projects.

Choose SRK International as your trusted partner for all your S690QL / WELDOX 700 Plate needs. Experience the difference of working with a company that values quality, reliability, and customer satisfaction. Contact us today to discuss your specific requirements and discover how we can fulfill them with our premium S690QL / WELDOX 700 Plates.

Rockstar is the range of high hardness, low alloyed martensitic steels. This abrasion resistant steel obtains hardness through intense water quenching and tempering process. Rockstar plates are available in three nominal hardness levels: 400, 450 and 500 BHN. Rockstar plates are optimised to provide high hardness, toughness, good formability.

Dimension Range

Grade ROCKSTAR 400 ROCKSTAR 450 ROCKSTAR 500
Thickness (in mm) 6-80 MM 6-50 MM 6-50 MM
Width (in mm) 1500-3500 1500-3500 1500-3500

Chemical Composition (Ladle Analysis)

Grade Plate thickness range in mm %C (Max) %Mn (Max) %P (Max) %S (Max) %Si (Max) %Cr (Max) %Ni (Max) %Mo (Max) B Max (ppm) CE (Max) PCM (Max)
ROCKHARD 400 '6.0-20.0 0.18 1.6 0.025 0.010 0.70 0.50 0.50 0.25 0.0040 0.45 0.28
20.1-32.0 0.20 1.6 0.025 0.010 0.70 1.00 0.50 0.50 0.0040 0.48 0.29
32.1-50.0 0.25 1.6 0.025 0.010 0.70 1.40 0.70 0.60 0.0040 0.57 0.33
50.1-80.0 0.25 1.6 0.025 0.010 0.70 1.40 0.70 0.60 0.0040 0.65 0.40
ROCKSTAR 450 '6.0-20.0 0.30 1.6 0.025 0.010 0.70 1.00 0.80 0.60 0.0040 0.52 0.34
20.1-40.0 0.30 1.6 0.025 0.010 0.70 1.40 0.80 0.60 0.0040 0.60 0.40
40.1-50.0 0.30 1.6 0.025 0.010 0.70 1.40 1.00 0.60 0.0040 0.65 0.50
ROCKSTAR 500 '6.0-20.0 0.32 1.6 0.025 0.010 0.70 1.50 1.50 0.60 0.0040 0.60 0.41
20.1-40.0 0.32 1.6 0.025 0.010 0.70 1.50 1.50 0.60 0.0040 0.65 0.43
40.1-50.0 0.32 1.6 0.025 0.010 0.70 1.50 1.50 0.60 0.0040 0.74 0.48

Mechanical Properties

Hardness ROCKSTAR 400 ROCKSTAR 450 ROCKSTAR 500
(On a Milled Surface 0.5-2mm below the plate surface) 360-430 BHN 425-475 BHN 450-540 BHN

Tensile Properties

Grade Yield Strength (Min-Mpa) Tensile Strength (Min-Mpa) % Elongation (GL=50mm) Charpy V-Notch Impact toughness (Min)
ROCKSTAR 400 1000 1250 12 27 Joules Min @ -40 deg C
ROCKSTAR 450 1100 1350 10 27 Joules Min @ -20 deg C
ROCKSTAR 500 1200 1450 8 27 Joules Min @ 0 deg C

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