S890QL steel equivalent iron roof sheet

GB 3531 09MnNiDR material is Manganese-Nickel alloy steel. The low temperature impacting test shall be done for 09MnNiDR centigrade, the impacting energy value should above 34 J. These S890QL steel equivalent plates are thus tested twice by BBN steel. The tests are conducted to ensure the correct working of the object to know whether there is any change in the properties or not.

A small amount of Nb is sufficient to obtain excellent comprehensive properties of S890QL steel equivalent etc. steel material, because at low Nb concentration, the yield strength of steel material increases faster and is proportional to the concentration, but when the Nb content is greater than 0.03%, the strengthening effect begins to decrease. Studies have shown that when the Nb content is greater than 0.06%, excess Nb will no longer strengthen the steel material.

The user of S355NC grade must make sure that his calculation, design and processing methods are appropriate for the S890QL steel equivalent material. The forming process used must be suitable for the intended application and comply with the state-ofthe- art; it is of fundamental importance to the processing behaviour of this S890QL steel equivalent steel grade.

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