Champak Industries' is a specialist supplier and exporter of High strength steels NAXTRA 70 Plates. We understand customers whose requirement for High strength steels Plates is extreme and who cannot use inferior quality steel plates.
NAXTRA 70 Plates: Purchasing Specification
| Requirement | What to specify |
|---|---|
| Grade and standard | EN 10025-6 grade (S690Q, S690QL or S690QL1) or the named brand; state the edition and whether equivalent brands are acceptable. |
| Impact requirement | Charpy temperature and energy: “L” grades are tested at −40 °C and “L1” grades at −60 °C. |
| Thickness | Yield and tensile strength fall as thickness rises, so give the thickness range of your plates. |
| Welding | Preheat and consumables depend on carbon equivalent and thickness; ask for the mill’s welding recommendations. |
| Documents | EN 10204 3.1 or 3.2 mill certificate, with ultrasonic testing where specified. |
STOCKIST OF HIGH YIELD STRUCTURAL STEEL PLATES
| HIGH YIELD STRUCTURAL STEEL PLATES | ||||||||
|---|---|---|---|---|---|---|---|---|
| Steel Grade | ||||||||
| Finland | Germany | Japan | Germany | Sweden | Austria | Belgium | ||
| S690QL | DILLIMAX 690T |
JFE HITEN 780 LE |
NAXTRA 70 |
WELDOX 700 |
ALFORM 700 |
1.8928 | ||
Reading the comparison table: The table lines up brands and countries one cell off. Read it as: DILLIMAX 690T (Dillinger, Germany), JFE HITEN 780 LE (JFE Steel, Japan), NAXTRA 70 (thyssenkrupp, Germany), WELDOX 700 (SSAB, Sweden) and ALFORM 700 (voestalpine, Austria). S690QL and 1.8928 are the grade and its material number, not brands. Brands of the same class are comparable, not identical.
HIGH YIELD STRUCTURAL STEEL PLATES
NAXTRA 70 Plates is a high yield structural steel or High strength steels grade produced in compliance with EN 10025:6:2004. The material is heats treated using the quench and temper process and has good bending and welding properties
Standard: The standard is EN 10025-6, as the page also says; “EN 10025:6:2004” means EN 10025-6:2004.
The code "S" for steel grade S690QL means structural steel.
The code "Q"refers to the delivery condition, in this case to quenched & Tempered.
The code "L" means that the average minimum values for impact energy have been defined at a temperature of -40°C.
Due to the materials high strength nature, using S690QL will promote leaner designed structures with increased payload capacity and energy efficiency.
The steel is used in a variety of Segments including
- Machine building
- Lifting equipment
- Heavy transportation
- Steel constructions
APPLICATIONS:
- Crane booms
- Mining and earthmoving equipment
- Bridges
- Material handling
- Trailers and agricultural equipment.
CHEMICAL COMPOSITION
| Grade | C | Si | Mn | P | S | N | B | Cr | Cu | Mo | Nb* | Ni | Ti* | V* | Zr* |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| S690 QL | 0.20 | 0.80 | 1.70 | 0.025 | 0.015 | 0.015 | 0.0050 | 1.50 | 0.50 | 0.70 | 0.06 | 2.0 | 0.05 | 0.12 | 0.15 |
Chemistry: The values are maximum percentages. The footnote means at least 0.015% of a grain-refining element, such as aluminium, must be present.
At least 0.015% of grain-refining element present. Aluminium is also one of these elements.
MECHANICAL PROPERTIES
| Tensile Strength (MPa) | Yield Strength (MPa)) | Min. % Elongation after fracture | ||||
|---|---|---|---|---|---|---|
| Nominal thickness (mm) | Nominal thickness (mm) | |||||
| =3 =50 | =50 =100 | =100 =150 | =3 =50 | =50 =100 | =100 =150 | |
| 690 | 690 | 690 | 770 - 940 | 770 - 940 | 770 - 940 | 14 |
Reading the table: The column headings are swapped: the 690 MPa values are the minimum yield strength and 770–940 MPa is the tensile strength range. “=3 =50” means over 3 up to 50 mm, and the same for the other thickness ranges.
V NOTCH IMPACT TESTING
| Grade | Sample Orientation | @ 0ºC | @-20ºC | @-40ºC | @-60ºC |
|---|---|---|---|---|---|
| S690QL | Longitudinal | 50 J | 40 J | 30 J | –– |
| Traverse | 35 J | 30 J | 27 J | –– |
Choosing a Quenched and Tempered Structural Plate
These brands are all quenched and tempered high-yield structural steels used where design strength is limited by plate weight. They are comparable in strength class but not identical: thickness range, chemistry, toughness grades and welding advice differ by mill.
| Brand | Basis | Notes from the pages |
|---|---|---|
| S690 QL | EN 10025-6 grade, 690 MPa minimum yield up to 50 mm | Impact guaranteed at −40 °C; start here if the brand is not fixed |
| DILLIMAX 690 | Dillinger brand, in B, T and E qualities (S690Q, S690QL, S690QL1) | B at −20 °C, T at −40 °C, E at −60 °C; 6–255 mm (B, T) |
| WELDOX 700 | SSAB brand, in E and F qualities | E at −40 °C, F at −60 °C; 4–160 mm (E), 4–130 mm (F) |
| NAXTRA 70 (this page) | S690QL-class quenched and tempered structural steel | Machine building, lifting equipment, heavy transport |
| SUPRALSIM 690 | Quenched and tempered, 690 N/mm² minimum yield, low sulphur and phosphorus | Weight-saving structures; forming and welding |
| MAXIL 690 | 690 MPa-class brand listed with the other high-strength steels | Ask for the datasheet |
| JFE 780 LE | JFE HITEN 780 N/mm² class, 685 MPa minimum yield | Impact at −40 °C; 5–160 mm |
Use the grade and brand approved in your design; confirm any substitution with your engineer.
Related plates in this range
Cutting, Fabrication and Welding
Champak Industries describes full and part plate/profile supply and a plasma-cutting service. Send drawings, quantities, tolerances and edge preparation for your parts. High-strength plate needs controlled preheat, interpass temperature and heat input when welding, and forming limits depend on the grade and thickness; follow the mill’s recommendations.
Testing, Inspection Documents and Traceability
| Requirement | What to identify in the order |
|---|---|
| Mill test certificate | EN 10204 3.1 showing brand and grade, heat number, chemistry and mechanical properties |
| Impact test | Charpy test temperature and minimum energy, if required |
| Ultrasonic test | Standard and acceptance class, if required |
| Traceability | Heat and plate number transferred to cut pieces |
See the company’s Quality Policy for its published policy.
Source NAXTRA 70 Plates from Champak Industries
Champak Industries’ company profile records its establishment in Mumbai in 1978 and its stockist, import and export activities. NAXTRA 70 Plates can be requested together with other plates in the High Tensile Plates range.
What Determines the Quotation?
Grade and brand, thickness, plate size, quantity, cutting, testing and packing all affect the quotation. Say whether pricing is needed per kilogram, per plate or per finished piece.
Packing, Dispatch and Export Requirements
Give the delivery address, required date and unloading constraints. For export orders, include the destination port, delivery terms and document list.
NAXTRA 70 Plates: Frequently Asked Questions
01What is NAXTRA 70 Plates?
NAXTRA 70 is a high-yield, quenched and tempered structural steel in the S690QL class to EN 10025-6, with 690 MPa minimum yield strength and impact values at −40 °C.
02Is NAXTRA 70 the same as S690QL?
The page describes it as an S690QL-class grade produced to EN 10025-6. It is a mill brand, so the certificate should name the brand and the standard.
03What is NAXTRA 70 used for?
The page lists machine building, lifting equipment, heavy transport, steel constructions, crane booms, mining and earthmoving equipment, bridges, material handling, trailers and agricultural equipment.
04What impact values apply?
The page lists 50 J, 40 J and 30 J longitudinal and 35 J, 30 J and 27 J transverse at 0 °C, −20 °C and −40 °C.
05Can NAXTRA 70 be welded?
Yes, with low-hydrogen consumables and the preheat and interpass temperatures the mill gives for the grade and combined thickness.
06Which certificate should I request?
An EN 10204 3.1 mill test certificate showing the brand and grade, heat number, chemistry and mechanical properties, plus impact results where you specify a test temperature.
07Can another brand replace NAXTRA 70?
Brands of the same class are comparable, not identical. Chemistry, toughness, thickness range and processing advice differ by mill, so confirm any substitution with your engineer.
08Can NAXTRA 70 plate be cut to size?
Yes. Champak Industries lists full and part plate and profile supply and a plasma-cutting service; send drawings, quantities and tolerances with your enquiry.
09Which sizes are available?
Availability depends on the grade, mill and thickness; send the thickness, width and length you need and sizes will be confirmed at quotation.
10How do I get a price and delivery date?
Send the grade, thickness, size or cutting drawing, quantity, destination and required date through the enquiry form below, by WhatsApp or by phone.