8/13/2019 Tabela de Tubos BWG

1/2

8/13/2019 Tabela de Tubos BWG

2/2

23Heat Transfer

Table 10-4Thermal Conductivity of Metals

Btu/hr ft F

Temp. F 70 100 200 300 400 500 600 700 800 900 1,000 1,100 1,200 1,300 1,400 1,500

Material

Carbon 30.0 29.9 29.2 28.4 27.6 26.6 25.6 24.6 23.5 22.5 21.4 20.2 19.0 17.6 16.2 15.6Steel

C-1/2Moly 24.8 25.0 25.2 25.1 24.8 24.3 23.7 23.0 22.2 21.4 20.4 19.5 18.4 16.7 15.3 15.0Steel

1 Cr-1/2 Mo &11/4 Cr-

1/2 Mo 21.3 21.5 21.9 22.0 21.9 21.7 21.3 20.8 20.2 19.7 19.1 18.5 17.7 16.5 15.0 14.8

2-1/4Cr-1 Mo 20.9 21.0 21.3 21.5 21.5 21.4 21.1 20.7 20.2 19.7 19.1 18.5 18.0 17.2 15.6 15.3

5 Cr1/2Mo 16.9 17.3 18.1 18.7 19.1 19.2 19.2 19.0 18.7 18.4 18.0 17.6 17.1 16.6 16.0 15.8

7 Cr1/2Mo 14.1 14.4 15.3 16.0 16.5 16.9 17.1 17.2 17.3 17.2 17.1 16.8 16.6 16.2 15.6 15.5

9 Cr-1 Mo 12.8 13.1 14.0 14.7 15.2 15.6 15.9 16.0 16.1 16.1 16.1 16.0 15.8 15.6 15.2 15.0

3-1/2Nickel 22.9 23.2 23.8 24.1 23.9 23.4 22.9 22.3 21.6 20.9 20.1 19.2 18.2 16.9 15.5 15.3

13 Cr 15.2 15.3 15.5 15.6 15.8 15.8 15.9 15.9 15.9 15.9 15.8 15.6 15.3 15.1 15.0 15.0

15 Cr 14.2 14.2 14.4 14.5 14.6 14.7 14.7 14.8 14.8 14.8 14.8 14.8 14.8 14.8 14.8 14.8

17 Cr 12.6 12.7 12.8 13.0 13.1 13.2 13.3 13.4 13.5 13.6 13.7 13.8 13.9 14.1 14.3 14.5TP 304 8.6 8.7 9.3 9.8 10.4 10.9 11.3 11.8 12.2 12.7 13.2 13.6 14.0 14.5 14.9 15.3Stn. Stl.

TP 316 & 7.7 7.9 8.4 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.4 12.9 13.3 13.8 14.2 14.6317 Stn. Stl.

TP 321 & 8.1 8.4 8.8 9.4 9.9 10.4 10.9 11.4 11.9 12.3 12.8 13.3 13.7 14.1 14.6 15.0347 Stn. Stl.

TP 310 7.3 7.5 8.0 8.6 9.1 9.6 10.1 10.6 11.1 11.6 12.1 12.6 13.1 13.6 14.1 14.5Stn. Stl.

Nickel 200 38.8 37.2 35.4 34.1 32.5 31.8 32.5 33.1 33.8

Ni-Cu Alloy 12.6 12.9 13.9 15.0 16.1 17.0 17.9 18.9 19.8 20.9 22.0400

Ni-Cr-Fe 8.6 8.7 9.1 9.6 10.1 10.6 11.1 11.6 12.1 12.6 13.2 13.8 14.3 14.9 15.5 16.0Alloy 600

Ni-Fe-Cr 6.7 6.8 7.4 8.0 8.6 9.1 9.6 10.1 10.6 11.1 11.6 12.1 12.7 13.2 13.8 14.5Alloy 800

Ni-Fe-Cr-Mo- 7.1 7.6 8.1 8.6 9.1 9.6 10.0 10.4 10.9 11.4 11.8 12.4 12.9 13.6

Cu Alloy 825

Ni-Mo 6.1 6.4 6.7 7.0 7.4 7.7 8.2 8.7 9.3 10.0 10.7Alloy B

Ni-Mo-Cr 5.9 6.4 7.0 7.5 8.1 8.7 9.2 9.8 10.4 11.0 11.5 12.1 13.2Alloy C-276

Aluminum 102.3 102.8 104.2 105.2 106.1Alloy 3003

Aluminum 96.1 96.9 99.0 100.6 101.9Alloy 6061

Titanium 12.7 12.5 12.0 11.7 11.5 11.3 11.2 11.1 11.2 11.3 11.4 11.6

Admiralty 70.0 75.0 79.0 84.0 89.0

Naval Brass 71.0 74.0 77.0 80.0 83.0

Copper 225.0 225.0 224.0 224.0 223.0

90-10 Cu-Ni 30.0 31.0 34.0 37.0 42.0 47.0 49.0 51.0 53.0

70-30 Cu-Ni 18.0 19.0 21.0 23.0 25.0 27.0 30.0 33.0 37.0

Muntz 71.0

Zirconium 12.0

Cr-Mo 11.3AlloyXM-27

Cr-Ni-Fe-Mo- 7.6Cu-Cb(Alloy 20Cb)

Ni-Cr- 5.67 5.83 6.25 7.25 8.17 9.08 10.08 11.0 12.0Mo-Cb(Alloy 625)

References: A.I.M.E. Tech. Publications Nos. 291, 360 & 648 Babcock & Wilcox Co. Cabot-Stellite

ASME Sect. VIII, Div. 2, 1986 Edition Teledyne Wah Chang Albany American Brass Co. Carpenter Technology

Huntington Alloy Inc. Bul. #15M1-76T-42. Trans. A.S.S.T. Vol. 21 pp. 10611078 Airco, Inc. International Nickel Co.

(Used by permission: Standards of Tubular Exchanger Manufacturers Association,7th Ed., Table D-12, 1988 and 1991. All rights reserved.)

Errata Note: k BTU/(hr)(ft)(Ft).