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304H Stainless Steel Welded Pipe
304H Stainless Steel Welded Pipe
Haosteel is professional manufacturer and supplier of 304H Stainless Steel Welded 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: |
304H |
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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 - 30mm |
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Outer Diameter |
1mm--930mm |
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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:
Due to its controlled carbon content of 0.04 to 0.10, Alloy 304H provides improved high temperature strength when exposed to temperatures above 800oF. Alloy 304H also has greater short term and long term creep strength than Alloy 304L at temperatures above 500oC and is more resistant to sensitization than Alloy 304L.
Chemical composition:
|
C |
Si |
Mn |
P |
S |
Cr |
Ni |
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0.04 - 0.1 |
≤ 0.75 |
≤ 2.0 |
≤ 0.045 |
≤ 0.03 |
18.0 - 20.0 |
8.0 - 10.5 |
Physical Properties:
Annealed:
Ultimate Tensile Strength – 75 KSI min (515 MPA min)
Yield Strength (0.2% Offset) –30 KSI min (205 MPA min)
Elongation – 35% min
Hardness – HRB92max (201HV max)
Applications:
Alloy 304H is often used as a material of construction up to about 1500F. Some examples of applications that Alloy 304H is commonly used for includes:
· Most commonly used in petroleum refineries
· Boilers
· Heat exchangers
· Condensers
· Pipelines
· Cooling towers
· Steam exhausts
· Electric generation plants
· On occasion will be found in fertilizer and chemical plants
Corrosion Resistance:
Resistance to corrosion in oxidizing environments is a result from the 18 to 19% chromium that the 304 alloys contain
Resistance to moderately aggressive organic acids is a result from the 9 to 11% nickel that the 304 alloys contain. At times, Alloy 304L may show a lower corrosion rate than the higher carbon Alloy 304; otherwise, the 304, 304L, and 304H alloys may be considered to perform uniformly in most corrosive environments.
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