347 Stainless Aerospace Tubing

347 stainless aerospace tubing is made from an austenitic stainless steel offering an excellent resistance to intergranular corrosion following exposure to temperatures in the chromium carbide precipitation range from 800 to 1500° F (427 to 816°C). Alloy 347 alloyed with columbian-tantalum (also referred to as niobium) allowing good mechanical properties at high temperatures.

Stock Size Range:

OD:
.031"- 3.00"
Walls:
.020"- .156"

Tempers: Annealed

Specifications: MI-L-T 8808, MIL-T-8606, AMS 5556, AMS 5571

Typical Chemical Composition %
Weight %NiCrMnCSiSPCuMoCb
Minimum 9.0 17.0                
Maximum 12.0 19.0 2.00 .080 1.00 .030 .040 .50 .50 1.10
Typical Mechanical Properties
Nominal ODNominal WallUltimate KSIYield KSIElongation
.188 and less .016 and less 75-120 max   35%
    75-105 max 30 min  
  Over .016     35%
         
Over .188 .010 and 75-115 max 30 min 35%
Thru .500 Less      
incl Over .010 75-105 max   35%
         
Over .500 All 75-100 max 30 min 35%

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