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UTP HydroCav - UTP Schweissmaterial

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TITANIUM<br />

ordinal number: 22<br />

crystal structure: hexagonal<br />

density [g/cm 3 ] : 4.50<br />

melting point [°C]: 1660<br />

lattice width [A]: 2.95/4.7<br />

atomic radius [A] : 1.47<br />

E-module [103 MPa]: 106<br />

TUNGSTEN<br />

ordinal number: 74<br />

crystal structure: cubic, bc<br />

density [g/cm 3 ] : 19.3<br />

melting point [°C]: 3410<br />

lattice width [A]: 3.16<br />

atomic radius [A] : 1.39<br />

E-module [103 MPa]: 368<br />

VANADIUM<br />

ordinal number: 23<br />

crystal structure: cubic, bc<br />

density [g/cm 3 ] : 5.96<br />

melting point [°C]: 1890<br />

lattice width [A]: 3.03<br />

atomic radius [A] : 1.34<br />

E-module [103 MPa]: 127<br />

ZIRCONIUM<br />

ordinal number: 40<br />

crystal structure: hexagonal<br />

density [g/cm 3 ] : 6.49<br />

melting point [°C]: 1852<br />

lattice width [A]: 3.23/5.1<br />

atomic radius [A] : 1.60<br />

E-module [103 MPa]: 92.2<br />

408<br />

Chemical symbol: Ti<br />

On account of its very strong affinity for Oxygen, nitrogen, sulphur<br />

and carbon, has a pronounced carbide forming action. Used widely<br />

in stainless steels as carbide former for stabilization against intercystalline<br />

corrosion. Also possesses grain refining properties.<br />

Ti restricts the gamma phase very pronouncedly. In high concentation,<br />

it leads to precipitation processes and is added to permanent<br />

magnet alloys an account of achieving high coercive field intensity.<br />

Ti increases creep rupture strength through formation of special nitrides.<br />

Finally, Ti tends pronouncedly to segregaion and banding.<br />

Chemical symbol: T (German W)<br />

Tungsten is a very pronounced carbide former (its carbides are very<br />

hard) and restricts the gamma phase. It improves toughness and prevents<br />

grain growth. T increases high temperature strength and retention<br />

of temper as well as wear resistance at high temperatures<br />

(red heat) and thus cutting ability.<br />

It is therefore alloyed primarily to high speed and hot forming tool<br />

steels, as well as creep-resistant steel types and to ultra-hard steels.<br />

Significant increase in coercive field intensity, thus alloying element<br />

of permanent magnet steel alloys. T impairs scaling resistance. Its<br />

high specific gravity is particular noticeable in high T-alloy high speed<br />

and hot forming tool steels.<br />

Chemical symbol: V<br />

Refines the primary grain and the casting structure. Pronounced<br />

carbide former, thus providing increase in wear resistance, edge holding<br />

quality and high temperature strength. It is used therefore primarily<br />

as additional alloying element in high speed, hot forming and<br />

creep resistant steels. Significant improvement in retention of temper,<br />

reduction of overheating sensitivity. As V refines the grain and<br />

inhibits air hardening as a result of carbide formation, it promotes<br />

the weldability of heat treatable steels. Increase in resistance to<br />

compressed hydrogen an account of carbide formation. V restricts<br />

the gamma phase and shifts the Curie point at elevated temperatures.<br />

Chemical symbol: Zr<br />

Carbide former; metallurgical use as alloying element for deoxidation,<br />

denitridig and desulphurisation, as it leaves minimal deoxidation<br />

products behind.<br />

Additions of Zr to fully deoxidised sulphur-bearing free-cutting<br />

steels have a favourable effect on sulphide formation and thus prevention<br />

of red shortness. It increases the life of heating conductor<br />

materials and produces restriction of the gamma phase.

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