Propeller hubs, blades and other parts in contact with salt water.
Mechanical Properties
M07 - As Continuous Cast
Hardness*
Brinell Hardness (500 kg load)
159
Tensile Strength**
KSI
90
Yield Strength **
KSI (0.5% Ext. under load)
38
Elongation**
% in 2 inch
18
**Test values are nominal approximations and depend on specimen size and orientation.
Physical Properties
Thermal Conductivity
BTU/ (sq ft-ft-hr-F)
20.8
Specific Heat
BTU/lb/ºF @ 68F
.105
Thermal Expansion
Per °F from 68 F to 572 F
.000009
Density
lb/cu in @ 68 F
.276
Electrical Conductivity* (Annealed)
% IACS @ 68 F
7.1
Modulus of Elasticity
KSI
16,500
*Volume basis
Fabrication Practices
Stress relieving temperature
500 F or 260 C
Time at temperature
1 hour per inch of section thickness
Responds to heat treatment
*
Machinability rating (Free Cutting Brass=100)
50
Suitability for being joined by:
Soldering/Good
Brazing/Fair
Oxyacetylene Welding/Not Recommended
Carbon Arc Welding/Poor
Gas Shielded Arc Welding/Good
Coated Metal Arc Welding/Good
*Since brazing is performed at temperatures within the hot-short range, strain must be avoided during the brazing and cooling of this alloy.
The values listed above represent reasonable approximations suitable for general engineering use. Due to commercial variations in composition and to manufacturing limitations, they should not be used for specification purposes. See applicable A.S.T.M. specification references.
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