material

PRODUCT

Special Products
BW Fittings
Forged Fittings
Steel Pipe Tube
Flanges
Fasteners
Steel Sheet Plate
Round Bar
Welding Wire Electrodes

PRODUCT MATERIAL

694 (CM-64)Download

 Alloy 694, also referred to as Coast Metal 64, is a cobalt-chromium-tungsten alloy providing high strength and stability at temperatures up to 2100°F. Deposits of alloy 694 have outstanding resistance to wear, erosion, creep, thermal fatigue and oxidation. The principal application is for hard-facing turbine blade interlock surfaces. Wire diameters 0.035", 0.045" and 0.062" are available in straight cut lengths or layer wound spools. This alloy is also available in shaped squares, flats and diamonds sized per customer requirements.
Chemistry

 

Cr

Ni

Mo

Co

W+Mo

Va

B

C

Fe

Mn

Su

MIN

26

4.0

-

-

18.0

0.75

0.005

0.7

-

-

-

MAX

30.0

6.0

0.5

Balance

21.0

1.25

0.1

1.0

3.0

1.0

1.0

Specifications
DMR 34.070
GE B50AB42B, GE B50TF55
MSRR.9500-226, MTS 1087A, PWA 694
Inventory
694 Weld Wire
Common Trade Names
CM-64, Coast Metal 64, Alloy 694
Features
• Hot erosive wear resistance
• Oxidation resistance to 2100°F
• Thermal shock, creep strength
Applications
• Hardfacing gas turbine blade shroud interlock surfaces and other wear location areas
Physical Properties
Density: 0.327 lb/in3
Melting Range: 7.7 in/in°F x 106

Temperature, °F

400

1000

1200

1400

1600

1800

Coefficient* of Thermal Expansion,
in/in°F x 10-6

7.0

7.8

8.1

8.4

8.9

9.7

Thermal Conductivity
Btu • ft/ft2 • hr • °F

7.3

10.4

11.6

12.7

13.9

-

Modulus of Elasticity Dynamic,
psi x 106

30

27

26

24

23

121

* 70°F to indicated temperature.
Mechanical Properties
Representative Tensile Properties

Temperature, °F

1800

Ultimate Tensile Strength, ksi

48

Typical Hardness

Temperature, °F

70

800

1000

1200

1400

Hot Hardness, DPH

440

355

20

210

220