S690Q High-Strength Structural Steel VS A283 Grade C Carbon Steel Plate

S690Q is a high-strength, quenched and tempered steel with a minimum yield strength of 690 MPaand good impact toughness, while A283 Grade C is a lower-strength carbon steel with a minimum yield strength of 205 MPa and no specific impact requirements. S690Q is used for structural applications where high strength-to-weight ratio is crucial, whereas A283 Grade C is more suitable for general structural purposes like welded and bolted components.

Adopt standard: S690Q steel EN 10025-6
Sell steel grade: S690Q steel plate, S690QL steel plate, S690QL1 steel plate
S690Q steel plate
S690Q is high yield strength structural steels grade in the quenched and tempered.
The symbol S is structural steel, 690 for the minimum yield strength in thickness under 50mm.
The Symbol Q mean the delivery condition in quenched and tempered.
S690q could be through the -20 temperature impact and the energy is 30J.
Gnee steel could supply EN 10025-6 S690Q plates directly from our mill. Besides that, we also have stock in hand in large thickness. Gnee steel sincerely hope new and old customers could inquiry our steel plates.

Chemical composition % of steel S690Q (1.8931): EN 10025-6-2004

Mechanical properties of steel S690Q (1.8931)

Equivalent grades of steel S690Q (1.8931)

Warning! Only for reference

Typical Applications

Heavy Machinery: Boom arms, chassis frames, and load-bearing components for cranes, excavators, mining equipment, and industrial presses.

Offshore & Marine Engineering: Offshore platform modules, subsea pipeline supports, and coastal infrastructure (resists cold temperatures and saltwater corrosion with optional surface treatments).

Bridge Engineering: Long-span bridge girders, piers, and seismic-resistant supports (Europe, Middle East, and Africa markets).

High-Rise & Industrial Buildings: Columns, beams, and trusses in skyscrapers, large stadiums, and heavy-duty workshops.

Petrochemical Equipment: Pressure vessel shells, large storage tanks, and high-pressure pipeline components (handles dynamic loads and extreme temperatures).

Why Choose A283 Grade C?

Cost-Effective: Ideal for budget-conscious projects requiring reliable strength.

Easy Fabrication: Excellent weldability and formability.

No MOQ Policy: Order from 1 plate to bulk quantities.

Global Delivery: Fast shipping to Southeast Asia, Middle East, and beyond.

Chemical Composition (ASTM A283 Grade C)

Mechanical Properties Of A283 Grade C

What is A283 Grade C equivalent to?

A36 steel

ASTM A283 grade C and A36 steel aren't exactly the same but very close. Based on the weldability, it can be considered that A36 steel can be used as an alternative substitution for ASTM A283 grade C.

Global Equivalents

JIS: SM400A

EN: S235JR

ISO: Fe360B

GB: Q235B

Applications

Construction:

Building frames, bridges, and support beams.

Pressure Vessels:

Tanks, boilers, and low-pressure containers.

Shipbuilding:

Non-critical hull sections and bulkheads.

General Fabrication:

Machinery bases, platforms, and agricultural equipment.

Request A Quote

If you want to learn about or purchase other ship plates from GNEE, you can send an email to alloy@gneesteelgroup.com. We will be very happy to serve you.

FAQ

What is the difference between S690Q and S690QL?

S690Q: Minimum impact toughness tested at -20°C (30J average). → Typical Use: Cranes in temperate climates, quarry equipment. S690QL: Certified for -40°C and below (≥40J impact toughness). → Critical Use: Arctic pipelines, offshore platforms, mining vehicles in Siberia.

What grade is S690QL material?

S690QL is a high strength quenched and tempered steel grade that complies to steel specification EN 10025. The designation S690QL refers to a minimum yield strength of 690 MPa.

What is S690 grade steel?

S690 high yield & fine grain steel plate is a high strength, quenched and tempered fine-grain structural steel. Structural steel S690 is used in structures that must withstand very heavy loads. This grade is meant for structures where weight savings is important.

What is the equivalent of S690 steel?

Approximate equivalents
ASTM A514, EN 10149-2 Grade S700MC, AS/NZS 3579 Grade 700, AM 700, Bisalloy 80.

What is the price of S690QL material?

S690QL High Strength Steel Plates, Thickness: 5mm to 150mm at 5,600-13,500 CNY per tonne (approx. 5.6-13.5 CNY per kilogram)/440-900 USD per tonne (approx. 0.44-0.90 USD per kilogram)

What is the hardness of S690 QL steel?

S690QL steel stockholders and suppliers. S690QL is a quenched and tempered high strength steel supplied in full plates or cut pieces with delivery to the whole of the UK. With its high yield of minimum 690MPa it offers better strength than standard carbon steel grades.

What is the effective use of high strength S690 steel in construction?

The high strength S690 steels have an excellent strength-to-self-weight ratio, and they are highly efficient to be used in heavily loaded structures. Typical applications include piles and columns in buildings and supporting members in bridges.

What is the difference between S890QL and S690QL?

S690QL, S890QL, and S960QL are all water quenched and tempered steels that comply with the EN10025:6:2004 specification. These ultra high strength steels have a minimum yield strength of 690 MPa, 890 MPa, and 960 Mpa respectively, making them ideal for use in the haulage sector.

What is the difference between S700MC and S690ql?

The S700MC Steel is basically a structural steel plate developed especially for applications requiring high yield strength. They are used for several load bearing applications. The S690ql is a low alloy structural steel which is high in strength and comes with good weldability.

What is the yield strength of s690 steel?

690 MPa.

Yield strength of 690 MPa. Used in structures bearing extremely heavy loads, such as bridges, offshore drilling rigs and buildings, as well as in heavy construction equipment and cranes.