EN755 B241 Aluminium Alloy 5086 flange fitting.pdf

5086 - Alloyed with 4.0% magnesium, .45% manganese and .15% chromium.  Very good corrosion resistance, good workability.  Tensile strength between 40,000 to 54,000 psi.

Principal Design Features
This is a high strength structural alloy. It is not heat treatable.

Commonly used in the manufacture of unfired, welded pressure vessels, marine, auto aircraft cryogenics, drilling rigs, tanks, TV towers, transportation equipment, and in missile components.

Machinability in the strain hardened tempers (H34, H36, H38) is relatively good. In the annealed (O temper) machining is difficult, but still can be accomplished. Use of lubricants is advised.

Forming characteristics are best with the alloy in the O temper -- less good in the H36 or H38 tempers.

This alloy is readily weldable by conventional methods. Use of electric arc welding in particular produces excellent results.

Heat Treatment
The alloy is non-heat treatable.

No specific data as to hot working range. However the alloy is forgeable.

Hot Working
No data in regard to hot forming. Cold forming characteristics are excellent and usually would not necessitate hot working.

Cold Working
Excellent cold working characteristics in the O temper and somewhat less good in H36 and H38 tempers.

Anneal at 650 F for long enough to insure thorough heating. Air cool.

Hardens by cold working only.r

Other Physical Props
Electrical conductivity 30% of copper.

Other Mechanical Props
Shear strength for O temper is 23 ksi, for H34 it is 27 ksi

Aluminium 5086
Specifications:ASTM B209, ASTM B210, ASTM B221, ASTM B241, ASTM B313, ASTM B345, ASTM B361, ASTM B547, ASTM B548, MIL C-26094, MIL S-24149/2, QQ A-200/5, QQ A-250/7, QQ WW-T-700/5, SAE J454, UNS A95086,
Chemical Composition
Chromium0.05 - 0.25
Copper0.1 max
Iron0.5 max
Magnesium3.5 - 4.5
Manganese0.2 - 0.7
Remainder Each0.05 max
Remainder Total0.15 max
Silicon0.4 max
Titanium0.15 max
Zinc0.25 max
Physical Data
Density (lb / cu. in.)0.096
Specific Gravity2.66
Melting Point (Deg F)1090
Modulus of Elasticity Tension10.3