GB/T Q690D high-strength welded structural steel

Q690D steel can be called low temperature resistant high strength steel with yield strength of 690Mpa. Q690 is the material name, which belongs to high-strength welded structural steel. Among them, Q represents the yield strength, and 690 represents the yield strength value. The different grades behind the Q690 steel plate indicate the impact temperature of Q690. The impact of grade D steel plate is -20°C. The impact of grade E steel plate is -40°C. The impact of grade C steel plate is 0°C.

Q690D is a quenched and tempered high-strength steel plate for construction machinery. Q690D steel plate has high yield strength and tensile strength, and it is widely used in coal mining machinery and construction machinery. Such as hydraulic supports, port cranes, flatbed trucks, etc.

Executive standard: GB/T1591-2008, GB/T16270-2009
Delivery Condition: TMCP + Tempered, and Quenched and Tempered

Q690D high-strength welded structural steel Chemical composition

Chemical composition	C	Si	Mn	P	S	Ni	Cr	Mo	Nb	Ti	B
Q690D	≤0.18	≤0.60	≤2.0	≤0.030	≤0.025	≤0.80	≤1.00	≤0.30	≤0.11	≤0.020	≤0.004

Q690D high-strength steel Dimensions

Grade	Size	Weight
Q690D	10220010000	235.783T
Q690D	12220010300	255.281T
Q690D	14220010500	262.462T
Q690D	16220012000	382.333T
Q690D	18220011800	148.892T
Q690D	18230011000	254.320T
Q690D	20220011000	168.32T
Q690D	22230011300	88.37T
Q690D	24230010800	128.53T
Q690D	25230010900	76.324T
Q690D	26247011000	160.37T
Q690D	28249011300	155.28T
Q690D	30240011500	164.32T
Q690D	32240011600	265.322T
Q690D	34250011000	89.37T
Q690D	38240011500	92.473T
Q690D	40248012000	66.348T
Q690D	45238011700	150.446T
Q690D	50258012300	187.335T
Q690D	55230012000	165.448T
Q690D	60240011800	137.563T
Q690D	70238012000	143.98T
Q690D	8025009000	127.38T
Q690D	90238010000	156.223T
Q690D	9222809800	189.367T
Q690D	100268011900	145.38T
Q690D	110252010890	178.39T
Q690D	120258012300	186.467T
Q690D	15020008000	188.988T