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Seamless Stainless Steel Capillary Tube SSSP01
  • Seamless Stainless Steel Capillary Tube
Seamless Stainless Steel Capillary Tube
  • Description
Capillary Tube
Grade(UNS): 304 304L 316 316L 321、310
Outside Dia: 0.25~12mm 
Wall Thickness: 0.08~1.0mm
Standards(Norm): ASME/ASTM A/SA312 ASME/ASTM A/SA312 ASME/ASTM A/SA269 ASME/ASTM A/SA270 DIN17456
Application Precision instrument, medical, chemical industry and so on
Surface Bright annealed/polished outside/polished outside and inside surface
Length unbending length or fix length
Package knitting strip bundle/wooden box/steel box


Completely different from large diameter stainless steel pipe, stainless steel capillary tube is very small like blood vessel or any small diameter tube. A stainless steel tube is just a really thin tube. (Usually about 1/2 mm across on the inside) They are common and are frequently used in precision optical machine, industrial sensors, electronic equipment, circuit protection tube; chemical industry and medical field.

 Chemical Composition

Grade Chemical Composition
C max Si max Mn max P max S max Ni Cr Mo Others
TP 304 0.08 0.75 2 0.04 0.03 8 - 11 18 - 20    
TP 304L 0.035 0.75 2 0.04 0.03 8 - 13 18 – 20    
TP 310S 0.08 0.75 2 0.045 0.03 19 - 22 24 -26 0.75 max  
TP 316 0.08 0.75 2 0.04 0.03 10 - 14 16 – 18 2 – 3  
TP 316L 0.035 0.75 2 0.04 0.03 10 - 15 16 - 18 2 - 3  
TP 317 0.08 0.75 2 0.04 0.03 11 - 14 18 - 20 3 - 4  
TP 321 0.08 0.75 2 0.04 0.03 9 - 13 17 - 20   Ti: 5×C%

Mechanical Properties
Grade Tensile
Strength Mpa, (Min)		 Yield Strength Mpa, (Min) %Age Elongation in 50mm gauge length min Hardness (Max)
BHN Rb
301 585 244 56 197 75
304 585 244 56 191 72
304L 585 210 56 191 72
310S 615 245 56 197 75
316 615 245 57 197 75
316L 585 215 56 197 75
321 615 245 56 197 75

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