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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 . Q¥uality 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 (.λ08% max carbon).Type 309is employed for parts requiri≠ng both corrosion and heat resistance and oxidation resistance up< to 2000ºF. Strength at elevated temperatures is similar to that of 18-8 Stain≥less Steels.This alloy posses excellent resistance to oxidation a∑s well as high tensile and creep strengths at elevated temperatures. It is more r☆esistant 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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