Arc Welding Service

Filler Metals

STELLITE 6 STELLITE 6

Nominal Composition (mass %) and Physical Properties

Others

Hardness

Density

Melting Range

Base

27-32

4-6

09-1.4

Ni,Fe,Si,

Mn,Mo

36-45 HRC

380-490 HV

8.44 g/cm³

0.305 lb/in³

2340-2570 ํ F

1285-1410 ํ C

Stellite cobalt base alloys consist of complex carbides in an alloy martrix. They are resistant to wear, galling and

corrosion and retain these properties at high temperatures. Their exceptional wear resistance is due mainly to the

unique inherent characteristics of the hard carbide phase dispersed in a CoCr alloy matrix.

Stellite^® 6 is the most widely used of the wear resistant cobalt based alloys and exhibits good all-round performance.

It is regarded as the industry standard for general-purpose wear resistance applications, has excellent

resistance to many forms of mechanical and chemical degradation over a wide temperature range, and retain a rea-

sonable level of hardness up to 500 ํ C (930 ํ F).Is also has good resistance to impact and cavitation erosion.

Stellite^® 6 is ideally suited to a variety of hardfacing processes and can be turned with carbide tooling. Examples

include valve seats and gates; pump shafts and bearings, erosion shields and rolling couples. It is often used self-mated.

Corrosion Resistance

The typical electrode potential in sea water at room temperature is -0.25V (SCE). Like stainless steels,

Stellite^® 6 corrodes primarily by a pitting mechanism and not by general mass loss in seawater and chloride

solutions. Its mass loss in sea water is below 0.05mm per year at 22 ํ C. More information regarding corrosion resistance

can be provided on request.

Nominal Thermal Expansion Coefficient (from 20 ํ F to stated temperature)

100 ํ C

(212 ํ F)

200 ํ C

(392 ํ F)

300 ํC

(572 ํF)

400 ํ C

(752 ํ F)

500 ํ C

(932 ํ F)

600 ํ C

(1112 ํ F)

700 ํ C

(1292 ํ F)

800 ํ C

(1472 ํ F)

900 ํ C

(1652 ํF)

1000 ํ C

(1832 ํF)

um/m.k

11.35

12.95

13.6

13.9

14.2

14.5

14.7

15.05

15.5

17.5

u-inch/inch- ํF

6.31

7.2

7.56

7.72

7.89

8.06

8.17

8.36

8.61

9.72

Nominal Tensile Properties at Room Temperature

	Utimate Tensile Strength Rm		Yield Stress Rp(0.2%)		Elongation	Elastic Modulus
	ksi	MPa	ksi	MPa	A(%)	psi	GPa
Castings	123	850	101.5	700	<1	30.3x10 ⁶	209
Stellite HS-6 (*)	183.5	1265	109	750	3-5	34x10 ⁶	237

Thermal and Electrical Properties

	Approximate value at Room Temperature
Thermal conductivity	14.82 W/m.k	102.7 Btu-in/hr/ft2/ ํF
Electrical resistivity	106 u-ohm.cm	41.7 u-ohm.inch

Product Forms and Cross Reference Specifications

Stellite 6 is avalable as welding wire, rod , power, and electrodes; finished castings and P/M parts. Deloro Stellite also offers hardfacing services. A separate

drochure is available for the wrought forms of this alloy, namely Stellite 6B and Stellite 6K.Stellite 6 can be supplied to the follwing specifications:

SPECIFICATION	PRODUCT FORM
UNS R30006	Rod, Castings
UNS R30106	P/M Parts
UNS W73006	Electrode
UNS W73036	Wire
UNS 5387	Castings
AMS 5788	Rod, Wire

SPACIFICATION	PRODUCT FORM
AWS A5.21 / ASME BPVC IIC SFA 5.21 ERCoCr-A	Rod
AWS A5.21 / ASME BPVC IIC SFA 5.21 ERCCoCr-A	Wire
AWS A5.13 / ASME BPVC IIC SFA 5.13 ECoCr-A	Electrode

Stellite is a registered Trade Name of Deloro Stellite

Deloro Stellite manufactures sophisticated alloys in the form of casting, powders, coatings, consumables, and machined parts

that resist wear, corrosion, and abrasion. Information provided in this document is intended only for general guidance about

Deloro Stellite products and is the best information in our possession at the time. Product users may request information about

their individual use of our of our products, but Deloro Stellite does not warrant or guarantee this information in any way. Selection

and purchase of Deloro Stellite products is the sole responsibility of the product user based on the suitability of each use. Individual

applications must be fully evaluated by the user, including compliance with applicable laws, requlations, and non-infringement.

Deloro Stellite cannot knowor anticipate the many varibles thet affect individual product use and individual performance results

may vary. For these reasons, Deloro Stellite does not warrant or quarantee advice or information in this document, assumes no liability

regarding the same, and expressly disclaims any warranty of any kind,including any warranty of fitness for a particular pupose,

regarding the same.