Description

Udimet L-605

UDIMET alloy L-605 (UNS R30605) is a solid solution strengthened cobalt-chromium-tungsten- nickel alloy with excellent high-temperature strength and excellent oxidation resistance to 2000°F (1093°C). The alloy also offers good resistance to sulfidation and resistance to wear and galling. Alloy L- 605 is useful in gas turbine applications such as rings, blades and combustion chamber parts (sheet fabrications) and can also can be used in industrial furnace applications such as muffles or liners in high- temperature kilns.

 

Table 1 – Limiting Chemical Composition, wt %

Carbon……………………………………………………………. 0.05-0.15

Manganese………………………………………………………… 1.0-2.0

Silicon……………………………………………………………. 0.40 max.

Chromium………………………………………………………. 19.0-21.0

Nickel……………………………………………………………… 9.0-11.0

Tungsten……………………………………………………….. 14.0-16.0

Phosphorus………………………………………………….. 0.040 max.

Sulfur…………………………………………………………… 0.030 max.

Iron…………………………………………………………………. 3.0 max.

Cobalt…………………………………………………………….. Balance*

 

*Reference to the ‘balance’ of a composition does not guarantee this is exclusively of the element mentioned but that it predominates and others are present only in minimal quantities.

 

Mechanical Properties

Table 4 – Rupture Strength of UDIMET alloy L-605 (1000 hr)

Physical Constants and Thermal Properties

Table 2 – Physical Constants

Density, lb/in³………………………………………………………… 0.335

g/cm³………………………………………………………… 9.27

Melting Range, °F……………………………………………. 2426-2570

°C…………………………………………… 1330-1410

Specific Heat at 70°F, Btu/lb°F…………………………………. 0.092

at 21 °C, J/kg°C……………………………………. 385

Permeability at 200 oersted……………………………………… 1.002

Thermal Conductivity, Btu•in/ft²•h•°F……………………………. 65

W/m•°C…………………………………….. 9.4

Electrical Resistivity (75°F), ohm•circ mil/ft…………………. 533.2

(24°C), microohm-m………………….. 0.886

 

Temperature Linear Expansion Coefficient of Thermal Expansion °F °C in/in x 10-3 in/in x 10-6 200 93 0.891 7.24 300 149 1.640 7.36 400 204 2.400 7.43 500 260 3.193 7.55 600 316 4.007 7.66 700 371 4.844 7.78 800 427 5.701 7.89 900 482 6.573 7.99 1000 538 7.444 8.06 1100 593 8.296 8.11 1200 649 9.303 8.28 1300 704 10.391 8.5 1400 760 11.486 8.68 1500 816 12.567 8.83 1600 871 13.618 8.94

 

Table 3 – Thermal Properties

Temperature		Rupture Strength
°F	°C	ksi	MPa
1200	649	39	270
1300	704	32	220
1400	760	24	165
1500	816	17	120
1600	871	10	72
1700	927	6	44
1800	982	4	25