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Q690D high strength steel plate

Q690D is a high-strength welded structural steel. Q represents the yield strength, 690 represents the yield strength value, and D represents the grade of the steel plate. It is widely used in coal mining machinery and engineering machinery, such as hydraulic supports, port cranes, and flatbed transporters.

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High-strength steel plate

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Chemical composition: usually contains carbon (C) ≤ 0.18%, silicon (Si) ≤ 0.60%, manganese (Mn) ≤ 2.00%, phosphorus (P) ≤ 0.025%, sulfur (S) ≤ 0.020%, niobium (Nb) ≤ 0.11%, vanadium (V) ≤ 0.12%, titanium (Ti) ≤ 0.20%, aluminum (Al) ≥ 0.015%, etc.
Mechanical properties: yield strength ≥ 690MPa, tensile strength 770 - 940MPa, elongation ≥ 10%. Low temperature impact test temperature is -20℃, and the impact absorption energy is not less than 34J.
Delivery status: generally delivered in the quenching and tempering (quenching + tempering) state.
Features: Ultra-high strength: has excellent bearing capacity, suitable for heavy-load structures.
Good low temperature toughness: can still maintain stable performance in low temperature environment.
Application areas: large cranes: such as key components such as crane arms and frames.
Coal mining machinery: such as hydraulic supports, etc.
Bridge engineering: especially in the construction of large bridges in cold regions.

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FAQ

Q:Will you can accept the customized and OEM products?

A:Yes,we can do the production based on your drawings and with your logo,also because we have very strong design and development team,so the feedback is very good for customized product.

Q:What is your payment terms?

A:Commonly two payment term for new customers 1 ) 30%T/T as deposit,70% balance against B/L copy. 2)100% Irrevocable L/C at sight. If you need other terms, please feel free to contact us too, we will try our best.

Q:How about the samples? Is it free to extra fees?

A：Samples are free, you need to pay for shipping.

Q:How long is your delivery time?

A:Our daily inventory is more than 8000 tons, so far common products size,just need 5 days from stocks; if the special size from new production, delivery 7-15 days.

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High-strength steel plate