Q690D/E High strength steel series

Q690 high Strength steel plate

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Description

Q690(Q690D = 100[690]Type Q = 100W[690W]Type Q = SHY685 = S690Q)

Chemical composition:

(P)≤0.025,(S)≤0.020,(Nb) ≤0.11,(V)≤0.12,(Ti)≤0.20,(Cr)≤1.00,(Ni)≤0.80,(Cu)≤0.80,(N)≤0.015,Mo):≤0.30,(B),(Al)≥0.015

Mechanical Properties:


The yield strength:σs(MPa)::
≤16mm:the yield strength(Rm/Mpa )≥690;             
1640mm:the yield strength(Rm/Mpa )≥670;

4063mm:the yield strength(Rm/Mpa )≥660;
63-80mm:the yield strength(Rm/Mpa )≥640;
The tensile strength:σb(MPa)
≤40mm:the tensile strength(Rm/Mpa )770-940;             
4063mm:the tensile strength(Rm/Mpa )750-920;
63-80mm:the tensile strength(Rm/Mpa )≥730-900;
The elongation:δ/%
≤40mm:the elongation(Rm/Mpa )≥14;             
4063mm:the elongation(Rm/Mpa )≥14;
63-80mm:the elongation(Rm/Mpa )≥14;

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