Australian grade AS3678-250 steel plate

1. Introduction of Australian steel grade AS3678-250:

AS3678-250 steel plate is equivalent to Chinese grade Q235B. AS3678-250 is an Australian grade, AS is an Australian grade, 3678 carbon structural steel, and 250 is the min. yield value.

2. AS3678-250 steel plate implementation standard: AS-NZS 3678-2011.

3. AS3678-250 steel plate chemical elements, melting analysis:

Grade

C

Si

Mn

P

S

Al

Ti

Cu

Ni

Cr

Mo

CE

AS3678-250

≤0.22

≤0.55

≤1.70

≤0.04

≤0.030

≤0.1

≤0.040

≤0.40

≤0.50

≤0.30

≤0.100

≤0.44

Note: (1) The grades listed allow the use of modified sulfide steelmaking techniques.
(2) The maximum value of Cr+Ni+Mo should not exceed 1.00%
(3) The limit value applies to both acid-soluble aluminum and all-aluminum.
(4) CE=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15
(5) Ni+V≤0.030%
(6) V≤0.10%, Ni+V+Ti≤0.15%.

4. Mechanical properties, yield strength and tensile strength of AS3678-250 steel plate:

Grade	Yield strength Rp0.2 MPa							Tensile strength Rm(Mpa)	Elongation A%
	Thickness (mm)
	≤8	>8≤12	>12≤20	>20≤32	>32≤50	>50≤80	>80≤150
AS3678-250	280	260	250	250	250	240	230	140	22