Simple Description： Standard：GB/T 19879-2015 Grade: Q345,Q390, Q420， Q460, Q500, Q550， Q620，Q690 Application: Steel structure frame project Size: 20*20-600-600mm Thickness 1.5mm-30mm Certificate: FPC, CE, Mill certificate, EN10214-1 Chemical Composition:

Grade

Chemical Compostion(%)

C

Mn

Si

P

S

V

Nb

Ti

AI≥

Cr

Ni

≤

≤

≤

≤

≤

≤

≤

≤

≤

≤

Q460

C

0.2

1.8

0.6

0.03

0.03

0.2

0.11

0.2

0.015

0.3

0.8

D

0.03

0.025

E

0.025

0.02

Mechanical Properties:

Grade	Delivery	Mechanical Properties
		Yield Strength  (Thickness Min Mpa )						Tensile Strength	elongation min（%）
		≤16mm	16—40mm	40—63mm	63—80mm	80—100mm	100—150mm	Min  Mpa	≥34J
Q460 C	Nornalization	460	440	420	400	400	380	550-720	≥17%
Q460 D	Nornalization
Q460 E	Nornalization

Production Show: Package: Dellivery And Loading: Further Processing: Application: Alloy square tubes are used in construction, machinery manufacturing, steel construction projects, shipbuilding, solar power brackets, steel structure engineering, power engineering, power plants, agricultural and chemical machinery, glass curtain walls, automobile chassis, airports, etc.