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ASTM A312 TP304H Stainless Steel Seamless Pipe With High Strength

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ASTM A312 TP304H Stainless Steel Seamless Pipe With High Strength

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Brand Name :YUHONG
Model Number :ASTM A312 TP304H
Certification :ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Place of Origin :China
MOQ :1000KGS
Price :Negotiable
Payment Terms :T/T, L/C
Supply Ability :1000 tons per month
Delivery Time :Depends on quantity
Packaging Details :Ply-wooden Case /Iron Case/ Bundle with plastic Cap/Woven Case
Specification :ASTM A312
Grade :TP304/304L/304H/317/321/316
Type :Seamless
Surface :Pickled and Annealed, Polished, Bright Annealed
Non Destructive Test :Eddy Current Test -ASTM E426, Hystostatic Test-ASTM A999, Ultrsonic Test -ASTM E213
Size Standard :ASTM B16.10 & B16.19 & Customized
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Stainless Steel ASTM A312 TP304H Seamless Pipe With High Strength

304H Seamless Pipe is a high strength pipe grade with excellent load bearing capacity. These pipes are produced by passing hot billets through extruding the metal and then shaping it into the correct dimensions.

This versatile pipe is expensive due to the materials used in its production but is worth the money due to its excellent characteristics. ASTM A312 Gr TP 304H is a grade designed for non-pressurized vessels or systems. This grade covers the structural qualities and shapes of different pipe grades.

TP 304H and TP 304L stainless steels have very similar chemical and mechanical properties, but there is one subtle but significant difference between them: carbon content. Type 304H stainless steel can contain up to 0.08% carbon, while Type 304L stainless steel typically contains up to 0.03% carbon. This may seem like an insignificant difference, but even a slight increase in carbon content can greatly enhance the corrosion resistance of a steel alloy.

304H Equivalent Grades:

GRADE UNS WERKSTOFF NR. JIS AFNOR BS GOST EN SS
USA GERMAN JAPAN RUSSIAN BRITISH RUSSIAN EUROPE SWEDISH
ASTM A312 304H S30409 1.4948 SUS 304H 304S11 X5CrNi18-10 2332

Chemical Composition of TP304H:

ASTM A312 Si C Mn P S Cr Ni
304H min. 18.0 8.0
max. 0.75 0.10 2.0 0.045 0.03 20.0 10.5

What Does the H Mean in 304H Pipes?

The "H" in 304h stainless steel pipe indicates its high carbon content, which is a common nomenclature for various stainless steel grades. In addition, high carbon stainless steels typically have less than 0.1% nitrogen in their composition compared to low carbon stainless steels.

Mechanical Properties:

SUS Tensile Strength minimum (MPa) Yield Strength 0.2% Proof minimum (MPa) Elongation minimum (% in 50mm) Hardness
Rockwell B (HR B) maximum Brinell (HB) maximum
304H 515 205 40 92 201

ASTM A312 TP304H Stainless Steel Seamless Pipe With High Strength

ASTM A312 TP304H Stainless Steel Seamless Pipe With High Strength

Physical Properties:

Grade Density (kg/m3) Elastic Modulus (GPa) Mean Coefficient of Thermal Expansion (m/m/0C) Thermal Conductivity (W/m.K) Specific Heat 0-1000C (J/kg.K) Electrical Resistivity (n.m)
0-1000C 0-3150C 0-5380C at 1000C at 5000C
304/L/H 8000 193 17.2 17.8 18.4 16.2 21.5 500 720

Applications:

  1. Off-Shore Oil Drilling Companies
  2. Power Generation
  3. Petrochemicals
  4. Gas Processing
  5. Specialty Chemicals
  6. Pharmaceuticals
  7. Pharmaceutical Equipment
  8. Chemical Equipment
  9. Sea Water Equipment
  10. Heat Exchangers
  11. Condensers
  12. Pulp and Paper Industry

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