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.

SKU	Description	OD	Wall	Specification
36263	SMLS 347 AMS 5571/MILT8808 3/8X.035	0.3750	0.0350	MIL-T-8808 AMS5571
36497	SMLS CD 347 8808 1/2 OD X .035 WA	0.5000	0.0350	MIL-T-8808 AMS5571
36442	SMLS CD 347 8808 1/2 OD X .028 WA	0.5000	0.0280	MIL-T-8808 AMS5571
36411	SMLS CD 347 8808 1/2 X .020 WA	0.5000	0.0200	MIL-T-8808 AMS5571
36813	SMLS CD 347 8808 3/4 OD X .028 WA	0.7500	0.0280	MIL-T-8808 AMS5571
35815	SMLS 347 8808 3/16 OD X .035 WA	0.1875	0.0350	MIL-T-8808 AMS5571
35789	SMLS 347 8808 3/16 OD X .028 WA	0.1875	0.0280	MIL-T-8808 AMS5571
35974	SMLS CD 347 8808 1/4 X .035 WA	0.2500	0.0350	MIL-T-8808 AMS5571
35922	SMLS CD 347 8808 1/4 OD X .028 WA	0.2500	0.0280	MIL-T-8808 AMS5571
35871	SMLS CD 347 8808 1/4 OD X .020 WA	0.2500	0.0200	MIL-T-8808 AMS5571

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 %	Ni	Cr	Mn	C	Si	S	P	Cu	Mo	Cb
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 OD	Nominal Wall	Ultimate KSI	Yield KSI	Elongation
.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%