MATERIAL £lATA SHEET FIN-14 (E)

FINE GRAIN STEEL TUBES AND

V ALL OUR E C & M ANNES M AN N T U B ES HOLLOWS SECTIONS,WELDABLE

FineXcell8

890

I \

1

2

Works designation EN Steel Name

S890QL1

EN Steel Number

1.8925

Revision: Page: Date:

01 of 222.06.2012

Scope This Data Sheet applies to seamless tubes, circular hollow sections and tube products made of quenched and tempered weldable fine-grain structural steel exhibiting the properties listed below in the as-supplied condition.This steel is particularly suitable for highly stressed welded components, e.g. in structural steelwork such as bridges, ships, lifting gear and commercial vehicles, as well ·s for hydraulic cylinders.

Seamless tubes, circular hollow sections and tube products made of FineXcell8

890 are manufactured ace. to EN10297-1 in conjunction with EN 10220 or ace.to ENI 10210-1 in conjunction with EN 10210-2 (for special purposes material can be delivered also on special request ac:c. to SEW 090-2 or ace. to EN 10216-3 in conjunction with EN10220 ). The product will be supplied with a type 3. l or 3.2 inspection certrricate according to EN

10204. Tubes intended for special purposes (e.g. chrome P'lating) are subject to special agreement.

The service performance of products made from th!iS steel is critically dependent on downstream processing (e. g.welding methods) and application conditions.Fabric:ators shall ensure that their calculation, design and operating methods match the material, reflect state-of-the-art practices and are suitable for the intended purpose, e. g. SEW 088, published by VDEh Verlag Stahleisen GmbH, DusS4 Idorf, Germany, should be observed in all processing.

The selection of the steel grade is the customer's re·sponsibility.

Chemical c Si Mn p s Cr Mo Ni v Nb B Ncomposition max. max. max. max. max. max. max. max.

(Heat analysis) 0.20 0.50 0.20 1.000.18 - 1.60 0.020 0.010 - - - 0.10 0.05

Contents in % 0.50 0.80 0.70 1.70by mass

J.oo5 0.020

The steel contains sufficient alloying additions to achieve a fine-grained microstructure. The nitrogen content (max. 0.020 %) is combined in nitrides. The Cu content is limited to max. 0.25 %.

Mechanical

\ Yield Strength ReHm;n

1)

I I

Tensile Strength R.. Elongation A.,;.

properties [MPa ] I "'" I [MPa] I [%)

for wall thicknesses T [mm] for wall thicknesses T [mm]

(at room 20 > 20 > 40 > 50 20 > 20 > 40temperature)

40 50 65 40 65 long. transv.

(1MPa = 1N/mm') 960 920 870890 850 820 800 - - - 14 12

1110 1070 1040

> if the upper yield strength is not defined, the 0.2% proof stress Rp0 2 must be determined

Impact energy wan Impact energy KVm;n.[J), aI verage on 3 Charpy-V-specimen

2·

l at test temperature [0C)

3)

thicknesses-60 -50 - 40 - 20 0

T

[mm] long. transv. long. transv. long. transv. long. transv. long. transv.

T 20 30 21 40 27 45 30 55 35 65 40

20 < T 65 - - 30 21 40 27 45 30 55 35

> minimum average values, only one individual value of a set of three may fall up to 30% short of the average.3'Testing is conducted on longitudinal specimens;?: 5mm wall thickness at the lowest temperature for which values are

stated. Additional testing of transverse specimen and at higher temperatures may be performed by special agreement and have tobe documented in the Inspection Certificate. No additional marking is required.Requirements for sub-size specimens are reduced in proportion to the cross section of the actual specimen compared to standard specimens.

MATERIAL £lATA SHEET FIN-14 (E)

FINE GRAIN STEEL TUBES ANDVALL O URE C & M ANNES MANN T UBES HOLLOWS SECTIONS,WELDABLE

Works designation

FineXcell8

890

]

423 442 449 456 461 479 499 517

=J

I )

EN Steel Name

S890QL1EN Steel Number

1.8925

Revision: Page: Date:

02 of222.06.2012

Physical Temperature [•q -100 -50 -25 0 20 100 200 300 properties

Density[103kg/m3

.. - - - 7,85 - - -

(Reference

values)

Modulus of elasticity (dynamic) [GPa] 2117 215 214 213 212 207 199 192

Poisson's ratio (dynamic) - 0282 0.283 0.284 0:284 0.285 0287 0.290 0.293

Thermal conductivity [W/(m K)] 291.1 32.7 33.9 35.2 35.9 38.1 39.2 38.5

Mean specific heat capacity [J/(kg K)](reference temperature 2o•c)

True specific heat capacity [J/(kg K)] 3i7 1 419 435 451 461 496 533 568

Thermal diffusivity [10-6m2/s] 1or.o 9.9 9.9 9.9 9.9 9.8 9.4 8.7

Mean coefficient of linear expansion [10-6/K](reference temperature 2o•c)

10t.5 10.9 11.2 11.4 11.5 12.1 12.7 13.2

Resistivity [.n m] 0204 0.230 0.244 0.258 0.270 0.317 0.382 0.461

Magnetic behaviour magnetizable

Processing Hot forming operations should be carried out in the temperature range of 105o•c to 75o•c. Hot forming operations such as forging and upsetting should be carried out in the upper temperature range. For processes stretching the material, the lower temperature range is recommended: Where the final forming stage involves reduction ratios < 5%,temperatures as low as 7oo c are permissible. Subsequently the material should be allowed to cool in still air. Hot forming must be followed by quenching and tempering. ICold forming is possible. If reheating is necessary, c:are should be taken to avoid (even locally limited) heating to temperatures above 55o•c or 30 K below temperinn level, because this might affect the material's properties. After heavy cold working with reduction ratios > 5%, the material must be either subject to a further quench and temper treatment or to a stress-relieving.

Welding This steel is weldable by all current manual or automatic methods. \ \ /( IThe following procedure is recommended for weldintg.

Wall thickness T Preheating

I

lnterpass temperature Max.heat input

[mm] [•q II [•C) [J/cm]

T::s20 min. 40 II 12000 bzw. 660 s max. 150 s = wall thickness [mm)20 < T ::s40 min. SO II

II

{up to 30% higher values forT-butt joints)

T > 40 min. 120

Care should be taken to minimize the heat input in riG welding. Stress relieving will generally not be necessary and should be performed only where it is expressly specified or appears advisable with a view to the design and/or operating conditions.Arc-welding should be carried out with appropriate basic-type consumables matching the steel's composition andproperties.Fillet welcls shottlcl preferably be earriecl ottt by a rru:Jiti pass methocl.

Heat Quench + temper trea,tment Stress relieving treatment

Hardening Tempering[•q

(Reference [•q [•qvalues)

920-960 water I oil quenching

!550- 680 I cooling still air 550 4cooling still air

4) however, minimum 30K below tempering

temperature

Workpieces must attain the specified temperature over the entire cross-section.Once the product has reached its hardening temperature no further soaking is required. For tempering, a minimum soaking time of 30 minutes is spedfied.For stress relieving, the minimum soaking time is 30 minutes. In the case of multiple annealing, the maximum soaking time is 150 minutes. When soaking for more than 90 minutes, the temperature should remain close to the lower limit of the range.

Remarks This Material Data Sheet replaces the previous editiion in which the old grade designations were used. The correlation between old and new grade designations can be tal<en from the actual version of the Grade Transfer Table(-+ see Material Data Sheet GTT-02).

In case of conflict between the English version and another language version, the English version (E) shall prevail.