S460G2+M

S460G2+M Steel Plate

S460G2+M;S460G2+Q offshore 460MPa high yield structural steel plates typically to be used in service platforms and oil rigs

S460G2+M high yield structural plates for offshore are intended for (but not limited to) use in fixed offshore structures,

designed to operate in the offshore sector.

Applicable codes and standards

BS-EN 10225:2009

Weldable structural steels for fixed offshore structures - technical delivery conditions.

S460G2+M Nearest Equivalent Grade :API 1993 = API 2W Grade 60 ; Former NORSOK M-120 =  Y40 S460Q3z;

BS 7191:1989 450EMZ

S460G2+Q Nearest Equivalent Grade : API 1993 = API 2Y  Grade 60 ; Former NORSOK M-120 = Y40 S460Q3z;

BS 7191:1989 450EMZ

Defination of S460G2+M;S460G2+Q

S460 G2+M / S460 G2+Q
S = Structural	460 = Minimum Yield S in MPa for thickness t ≤ 16mm	Letter G	+M = Delivery Condition
Symbol for structural and indicating that following figures specify the minimum yield strangth in MPa.(MPa=N/mm2)	t ≤ 16mm      460MPa 16 <  t  ≤ 25mm  440MPa 25 <  t  ≤ 40mm  420MPa 40 <  t  ≤ 63mm  415MPa 63<  t  ≤ 80mm   405MPa 80<  t  ≤ 100mm  400MPa	Follow by a maximum of two digits characterising and indicating the steel grade within the groups 1,2,3, as defined per table 4 of EN10225	+M Thermo mechanical rolling +N Normalizing rolling +Q Quenched and tempered Thermo mechanical rolling is a rolling process in whichthe final deformationis carried out in a particular temperature range leading to a material condition equivalent with certain properties which cannot be achieved or repeated by a heat treatment alone

S460G2+M Chemical composition

C	0.14⁴	Cu	0.30	Cr+Mo+Ni+Cu	0.90
Si	0.15-0.55	N	0.010	Nb+V	0.09
Mn	1.65	Nb	0.040	Nb+V+Ti	0.11
P	0.02	Ti	0.025	CEV (ⅡW) see formula below	0.43¹
S	0.007	V	0.080	Pcm See formula below	0.22
Cr	0.25	As²	0.03
Mo	0.25	Sb²	0.010	Bi²	0.010
Ni	0.70	Sn²	0.020	Ca²	0.005
Al3	0.015/0.055	Pb²	0.010	B²	0.0005

CEV = C + Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15

Pcm = C + (Si/30) + (Mn+Cu+Cr)/20 + (Ni/60) + (Mo/15) + (V/10) + 5(B)

S460G2+M Mechanical Properties

Thickness t	Yield Reh	Tensile Rm	Reh / Rm	CVN	El
mm	MPa (min)	MPa	-	-40ºC	%
t ≤ 16	460	540-700	max. 0.93	≥60J transverse	17
16 < t ≤ 25	440	530-690	max. 0.90
25 < t ≤ 40	420	520-680
40 < t ≤ 63	415	515-675
63 < t ≤ 80	405	505-665
80 < t ≤ 100	400	500-660

Available options as per section 13 of EN 10225

Option	Subject	Remarks
10	PWHT*	Mechanical tests include SPWHT condition for thicknesses greater than 40mm
12	Strain ageing*	Strain ageing tests are carried out for thicknesses greater than or equal to 12.5mm. Plastic strain 5%, age for 1h at 250ºC. Transverse CEV - values in strain aged condition min. 36/26J at -40ºC
13	Through Thickness Testing	TTP testing for thicknesses ≥ 15 mm. To meet class Z35 according to EN 10164. Through thickness strengths min 80% of specified minimum tensile strength for specifield thickness.
-	Low Sulphur	S ≤ 0.005% in combination with abvove option 13
-	Hardness	Hardness tested according to Vickers
18	weldability*	Pre qualification for thicknesses ≥ 40 mm up to 75 mm

*Available upon request

Surface

All surfaces have been 100% visually inspected. The surface condition does comply with

EN 10163 -2, class A, sub-class 3.

NDT

All plates have been ultrasonically tested in accordance with EN 10160. Ultrasonic testing has been carried out either prior to,

or after the final heat treatment and does meet the requirements of EN 10160, class S1/E2 for steels of group 3.

According EN 10225 this steel designated a group 3 steel.

Certification and traceability

All dimensions will be supplied with a 3.2 certificate according to EN 10204, endorsed by recognized and independent inspection agency.

Low stress die-stamping on head and tail of each plate.

Dimensional control

All dimensions will be supplied according to EN 10029, flatness calss N, thickness class A.