High strength fine grained structural steel Quenched and tempered.
Champak Industries' is a specialist supplier and exporter of High strength steels DILLIMAX 690T Plates. We understand customers whose requirement for High strength steels Plates is extreme and who cannot use inferior quality steel plates.
DILLIMAX 690 is a high strength quenched and tempered, fine grained structural steel with a minimum yield strength of 690 MPa (100 ksi)2 in its delivery condition (referring to the lowest thickness range). DILLIMAX 690 is preferentially used for welded steel structures within mechanical constructions, plant constructions and structural steel works, such as machines for structural engineering, conveying plants, hoists, cranes, flood gates, bridges and frameworks.
DILLIMAX 690T 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. |
DILLIMAX 690 CAN BE DELIVERED IN THREE QUALITIES AS FOLLOWS:
Basic (B) with minimum impact values at 20 °C (-4 °F)2 : DILLIMAX 690 B Material No. 1.8931 - S690Q according to EN 10025-6
Test temperatures: The temperatures are written without the minus sign: “20 °C (−4 °F)”, “40 °C (−40 °F)” and “60 °C (−76 °F)” mean −20 °C, −40 °C and −60 °C. The small “2” after the units is a footnote marker for converted values.
Tough (T) with minimum impact values at 40 °C (-40 °F)2 : DILLIMAX 690 T Material No. 1.8928 - S690QL according to EN 10025-6
Extra tough (E) with minimum impact values at 60 °C (-76 °F)2 : DILLIMAX 690 E Material No. 1.8988 - S690QL1 according to EN 10025-6 DILLIMAX 690 can be delivered as basic grade (B) or tough grade (T) in thicknesses from 6 to 255 mm (¼ to 10 in.)2 , as extra tough grade (E) in thicknesses from 6 to 200 mm (¼ to 8 in.)2 according to the dimensional program. DILLIMAX 690 fulfills all requirements of EN 10025-6. If a CE marking according to EN 10025-1 is needed, an additional attestation for the corresponding quality according to EN 10025-6 has to be ordered.
Chemical composition
| DILLIMAX 690 | C | Si | Mn | P | S | Cr | Ni | Mo | V+Nb | B |
|---|---|---|---|---|---|---|---|---|---|---|
| B, T, E t ≤ 200 mm | ≤ 0.20 | ≤ 0.50 | ≤ 1.60 | ≤ 0.018 | ≤ 0.005 | ≤ 1.50 | ≤ 1.80 | ≤ 0.60 | ≤ 0.10 | ≤ 0.004 |
| B, T t > 200 mm | ≤ 0.18 | ≤ 2.60 | ≤ 0.70 |
Mechanical properties
| Plate thickness t [mm] | DILLIMAX 690 max. CEVa (CETb) [%] |
See EN 10025-6 max. CEVa [%] |
|---|---|---|
| t ≤ 25 | 0.50 (0.35) | 0.65 |
| 25 < t ≤ 50 | 0.55 (0.38) | 0.65 |
| 50 < t ≤ 100 | 0.67 (0.40) | 0.77 |
| 100 < t ≤ 150 | 0.75 (0.43) | 0.83 |
| 150 < t ≤ 255 | 0.78 (0.45) | - |
Heading: The table under “Mechanical properties” gives maximum carbon equivalents (CEV and CET) by thickness, not mechanical properties. Ask for the mill’s datasheet for yield and tensile values.
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 (this page) | 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 | 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 DILLIMAX 690T 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 DILLIMAX 690T Plates from Champak Industries
Champak Industries’ company profile records its establishment in Mumbai in 1978 and its stockist, import and export activities. DILLIMAX 690T 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.
DILLIMAX 690T Plates: Frequently Asked Questions
01What is DILLIMAX 690T Plates?
DILLIMAX 690T is the tough (T) quality of DILLIMAX 690, a quenched and tempered fine-grained structural steel with 690 MPa minimum yield strength, material number 1.8928 (S690QL) with impact values at −40 °C.
02What are the B, T and E qualities?
B (basic) has impact values at −20 °C, T (tough) at −40 °C and E (extra tough) at −60 °C. They correspond to S690Q (1.8931), S690QL (1.8928) and S690QL1 (1.8988) in EN 10025-6.
03Which thicknesses are listed for DILLIMAX 690?
The B and T qualities are listed from 6 to 255 mm and the E quality from 6 to 200 mm, according to the mill’s dimensional programme.
04Is DILLIMAX 690 CE-marked?
It meets EN 10025-6. If CE marking to EN 10025-1 is needed, an additional attestation must be ordered, as the page states.
05Can DILLIMAX 690T 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 DILLIMAX 690T?
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 DILLIMAX 690T 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.