Arc Welding Service

Filler Metals

STELLITE 12 STELLITE 12

Nominal Composition (mass %) and Physical Properties

Others

Hardness

Density

Melting Range

Base

27-32

7.5-9.5

1.4-1.7(hardfacings)

1.7-2.0(castings)

Ni,Fe,

Si,Mn

45-51 HRC

435-590 HV

8.53 g/cm3

0.308 lb/in3

2192-2489 ํ F

1200-1365 ํ C

Stellite cobalt base alloys Consist of complex carbides in an alloy matrix. They are resistant to wear, qalling and

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

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

Stellit^® 12 could be considered an intermediate alloy between Stellite^® 6 and STellite^® 1. It contains a higher fraction of hard,

brittle carbides than Stellite^® 6, and has increased resistance to low-angle erosion, abrasion, and severe sliding wear

whilst retaining reasonable impact and cavitation resistance.

Stellite^® 12 is often used self-mated or running against Stellite^® 6 or Stellte^® 1. The higher tungsten content provides

better high-temperature properties compared to Stellite^® 6, and it can be used at temperatures up to about 700 ํ C

Stellite^® 12 is typically used for cutting tools that need to withstand abrasion, heat and corrosion. Examples

inclide industrial knives for cutting carperts, plastics, paper and synthetic fibres: and saw tips in the timber

industry. It is also used for control plates in the beverage industy,pump vanes, bearing busher and narrow-

neck qlass mold plungers: and for hardfacing of engine valves,pinch rollers in the metal-processing indus-

tries, and rotor blade edges.

Corrosion Ressistance

The typical electrode potential in sea water at room temperature is approximately - 0.3 V (SCE).Like stain-

less steels, Stellite^® 12 corrodes primarily by a pitting mechanism and not by general mass loss in seawater

and chloride solutions. Information reqarding corrosion resisitance in other corrosive environments can be

provided on request.

Nominal Thermal Expansion Coefficient (from 20 ํ C 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

11.5

12.1

12.6

12.9

13.3

13.8

14.3

14.8

15.2

15.6

u-inch/inch- ํF

6.4

6.7

7.0

7.2

7.4

7.7

7.95

8.2

8.45

8.7

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	107	740	84	580	<1	32.8x10 ⁶	226
Stellite ® HS-12 (*)	174	1200	130	900	2	30.1x10 ⁶	208

(*) "HS" =HIP -consolidated from the power form.

Nominal Hot Hardness (DPH) as-cast

20 ํ C

(68 ํ F)

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)

546

456

418

390

380

371

362

328

232

153

Thermal and Electrical Properties

	Approximate value at Room Temperature
Thermal conductivity	14.6 W/m.k	100 Btu-in/hr/ft2/ ํF
Electrical resistivity	98 u-ohm.cm	38.6 u-ohm.inch

Product Forms snd Cross Reference Specifications

Steelite^® 12 is available as welding wire, rod powder, and electroes,finished casting and P/M parts. Deloso offers hardfacing services.

Stellite^® 12 can be supplied to the following specifications:

SPECIFICATION	PRODUCT FORM
UNS R30012	Rod, Castings
UNS W73012	Electrode
UNS W73042	Wire

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

Stellite is 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.