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309 Seamless Stainless Steel Pipe tubing
309 Stainless Steel Seamless Pipe
Haosteel is professional manufacturer and supplier of 309 Stainless Steel Seamless Pipe . Quality guaranteed, On-time delivery, After-sales warranty.
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Standard: |
ASTM A269/A312/A213/A249/A554 |
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Grade: |
309 |
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Delivery: |
Cold rolled Hot rolled |
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Surface: |
Mill, Pickled, HL, Polished, Mirror |
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Thickness: |
0.2mm - 40mm |
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Outer Diameter |
1mm--1000mm |
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Length: |
6000mm or as customer request |
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Mill: |
Tisco, Jisco, Baosteel, etc. |
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Delivery time: |
15 days in common |
Description:
Type 309 is an austenitic chromium nickel stainless steel (.08% max carbon).Type 309is employed for parts requiring both corrosion and heat resistance and oxidation resistance up to 2000ºF. Strength at elevated temperatures is similar to that of 18-8 Stainless Steels.This alloy posses excellent resistance to oxidation as well as high tensile and creep strengths at elevated temperatures. It is more resistant to marine atmospheres than Type 304.It is generally considered as a heat-resisting alloy.
Chemical composition:
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C |
Si |
Mn |
P |
S |
Cr |
Ni |
Mo |
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≤ 0.08 |
≤ 0.75 |
≤ 2.0 |
≤ 0.045 |
≤ 0.03 |
22.0 - 24.0 |
12.0- 15.0 |
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Physical Properties:
Annealed:
Ultimate Tensile Strength – 75KSI min (515 MPA min)
Yield Strength (0.2% Offset) –30 KSI min (205 MPA min)
Elongation – 35% min
Hardness – HRB95max (217HV max)
Applications：
Furnace parts, Heat Exchangers, Paper Mills.
Heat Treatment:309 can be rolled formed, stamped and drawn readily. In-process annealing is usually required to reduce hardness and increase ductility..
Heat Treatment:309 can only be hardened by cold working.
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