Champak Industries' is a specialist supplier and exporter of High strength steels WELDOX 700E Plates. We understand customers whose requirement for High strength steels Plates is extreme and who cannot use inferior quality steel plates.
Weldox 700 is a general structural steel with minimum yield strength of 650 - 700 MPa depending on thickness. Weldox 700 meets the requirements of EN 10025 for the corresponding grades and thicknesses. Typical applications are demanding loadbearing structures.
Weldox 700 E is available in plate thicknesses of 4 – 160 mm and Weldox 700 F is available in plate thicknesses of 4 - 130 mm. Both grades are available in widths up to 3350 mm and lengths up to 14630 mm. For thicknesses over 100 mm preferred width is 1650 mm with untrimmed edge.
WELDOX 700E 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. |
MECHANICAL PROPERTIES
For transverse test pieces according to EN 10025
| Thickness mm | Yield strength 1) Rp 0.2, min MPa | Tensile strength 1) Rm MPa | Elongation A5 min % | Typical hardness HBW |
|---|---|---|---|---|
| 4 - 53 | 700 | 780 - 930 | 14 | 260 - 310 |
| (53) - 100 | 650 | 780 - 930 | 14 | 260 - 310 |
| (100) - 160 | 650 | 710 - 900 | 14 | 240 - 290 |
| Impact properties | E -400C | F -600C |
|---|---|---|
| Min. impact energy (J) for transverse tests Charpy V 10x10 mm tests specimens 2) | 69 J | 27 J |
| Meet the requirements for | S 690 QL | S 690 QL1 |
Reading the table: “E −400C” and “F −600C” mean −40 °C and −60 °C. Weldox is a trade mark of SSAB.
Unless otherwise agreed, transverse impact testing according to EN 10025-6 option 30 will apply. For thicknesses between 6 - 11.9 mm, sub-size Charpy V-specimens are used. The specifi ed minimum value is then proportional to the cross-sectional area of the specimen compared to a full-size specimen (10 x 10 mm)
Transverse testing: Transverse impact testing to EN 10025-6 option 30 applies unless otherwise agreed. “Specifi ed” means specified.
CHEMICAL COMPOSITION (HEAT ANALYSIS)
Minimum values
| C *) Max % | Si *) Max % | Mn *) Max % | P Max % | S Max % | Cr *) Max % | Cu *) Max % | Ni *) Max % | Mo *) Max % | B *) Max % |
|---|---|---|---|---|---|---|---|---|---|
| 0.20 | 0.60 | 1.60 | 0.020 | 0.010 | 0.70 | 0.30 | 2.0 | 0.70 | 0.005 |
Chemistry: The label above this table says “Minimum values”, but the column headings and values are maximum percentages (“Max %”).
MAXIMUM CARBON EQUIVALENT CET (CEV)
| Thickness mm | - 5 | (5 )- (10) | 10- (20) | 20 - (40) | 40 - (80) | 80 - (100) | 100 - 160 |
|---|---|---|---|---|---|---|---|
| Weldox 700E: CET (CEV) | 0.34 (0.48) | 0.31 (0.48) | 0.31 (0.48) | 0.36 (0.52) | 0.39 (0.58) | 0.39 (0.58) | 0.41 (0.67) |
| Weldox 700F: CET (CEV) | 0.38 (0.57) | 0.38 (0.57) | 0.38 (0.57) | 0.38 (0.57) | 0.39 (0.58) | 0.39 (0.58) | 0.41 (0.67) |
Carbon equivalent: CET is the carbon equivalent used for preheat estimation and CEV the IIW carbon equivalent; both are maximums by thickness. Ranges such as “(5)–(10)” mean over 5 up to 10 mm.
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 (this page) | 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 | 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
Applications for WELDOX 700E Plates
Typical uses include cranes, lifting equipment, heavy transport, machine building and welded steel structures. Tell us the load, temperature and service conditions so the right grade and thickness can be quoted.
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 WELDOX 700E Plates from Champak Industries
Champak Industries’ company profile records its establishment in Mumbai in 1978 and its stockist, import and export activities. WELDOX 700E 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.
WELDOX 700E Plates: Frequently Asked Questions
01What is WELDOX 700E Plates?
WELDOX 700E is a quenched and tempered high-strength structural steel with 650–700 MPa minimum yield depending on thickness, listed in thicknesses of 4–160 mm and meeting the requirements of S690QL.
02What is the difference between Weldox 700E and 700F?
Both are 700 MPa-class grades. The page lists 700E at −40 °C (meets S690QL) and 700F at −60 °C (meets S690QL1), in thicknesses of 4–160 mm and 4–130 mm.
03How wide and long is Weldox 700 plate?
The page lists widths up to 3350 mm and lengths up to 14630 mm; for thicknesses over 100 mm the preferred width is 1650 mm with an untrimmed edge.
04Does yield change with thickness?
Yes: 700 MPa minimum up to 53 mm, then 650 MPa up to 160 mm, with a lower tensile range above 100 mm.
05Can WELDOX 700E 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 WELDOX 700E?
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 WELDOX 700E 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.