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304H stainless steel is a high-carbon variant of ordinary 304 stainless steel that is intended to provide better strength and performance at high temperatures. In settings like power plants, refineries, and the petrochemical industry where high temperatures are a problem, this type of stainless steel is frequently utilized. The "H" in 304H stands for greater carbon content, which is usually between 0.04% and 0.10%, in comparison to the regular 304 grade. The material's tensile strength and creep resistance at high temperatures are enhanced by its higher carbon content, which qualifies it for usage in settings where thermal stability and longevity are essential. Pressure vessels, boiler components, and heat exchangers are frequently built using 304H stainless steel pipes. Their capacity to tolerate elevated temperatures without compromising their structural soundness renders them perfect for high-pressure settings and thermally cycling conditions. Because of the chromium and nickel in their composition, these pipes have exceptional corrosion resistance in addition to their temperature resistance. They can withstand oxidation and corrosion in a variety of settings, such as strong chemical and acidic ones.
To create 304H pipes with the appropriate mechanical qualities and dimensions, procedures including extrusion, welding, and heat treatment are used in the fabrication process. These pipes meet diverse design and engineering needs and come in a variety of shapes, including seamless and welded varieties. A versatile option for many industrial applications, 304H pipes are reasonably simple to mill and build despite its high-performance qualities.
Pipe Specification : ASTM A312, A358 / ASME SA312, SA358
Dimension Standard : ANSI B36.19M, ANSI B36.10
Outside Diameter (OD) : 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB available Ex-stock, OD Size pipes available Ex-stock
Thickness Range : 0.3mm – 50 mm
Schedule : SCH 10, SCH20, SCH30, SCH40, STD, SCH60, XS, SCH80, SCH120, SCH140, SCH160, XXS
Type : Seamless Pipe, Welded Pipe, ERW Pipe, EFW Pipe, Fabricated Pipe, CDW
Form : Round Pipes, Square Pipes, Rectangular Pipe
Length : Single Random, Double Random & Cut Length
End : Plain End, Beveled End, Threaded
End Protection : Plastic Caps
Outside Finish : 2B, No.1, No.4, No.8 Mirror Finish
Finish : Annealed and Pickled, Polished, Bright Annealed, Cold Drawn
External Coating : 3LPE / 3LPP/ FBE/ DFBE/ PP
Origin : Indian Origin, European Origin, Japanese Origin
Testing and Documents : Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, Destructive Test Report, Non Destructive Test Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports
Packing : Packed in Wooden Boxes, Bubble wraps, Steel Strips Bundled, or as per Customers Requests
A Wide Range of ASTM A312 TP 304H Stainless Steel Pipes at Best Price.
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NPS | OD | SCH 5S | SCH 10S | SCH 40S | SCH 80S |
1/4 | 13.72 | – | 1.65 | 2.24 | 3.02 |
3/8 | 17.15 | – | 1.65 | 2.31 | 3.2 |
1/2 | 21.34 | 1.65 | 2.11 | 2.77 | 3.73 |
3/4 | 26.67 | 1.65 | 2.11 | 2.87 | 3.91 |
1 | 33.4 | 1.65 | 2.77 | 3.38 | 4.55 |
1.25 | 42.16 | 1.65 | 2.77 | 3.56 | 4.85 |
1.5 | 48.26 | 1.65 | 2.77 | 3.68 | 5.08 |
2 | 60.33 | 1.65 | 2.77 | 3.91 | 5.54 |
2.5 | 73.03 | 2.11 | 3.05 | 5.16 | 7.01 |
3 | 88.9 | 2.11 | 3.05 | 5.49 | 7.62 |
3.5 | 101.6 | 2.11 | 3.05 | 5.74 | 8.08 |
4 | 114.3 | 2.11 | 3.05 | 6.02 | 8.56 |
5 | 141.3 | 2.77 | 3.4 | 6.55 | 9.53 |
6 | 168.28 | 2.77 | 3.4 | 7.11 | 10.97 |
8 | 219.08 | 2.77 | 3.76 | 8.18 | 12.7 |
10 | 273.05 | 3.4 | 4.19 | 9.27 | 12.7 |
12 | 323.85 | 3.96 | 4.57 | 9.53 | 12.7 |
14 | 355.6 | 3.96 | 4.78 | 9.53 | 12.7 |
16 | 406.4 | 4.19 | 4.78 | 9.53 | 12.7 |
18 | 457.2 | 4.19 | 4.78 | 9.53 | 12.7 |
20 | 508 | 4.78 | 5.54 | 9.53 | 12.7 |
22 | 558.8 | 4.78 | 5.54 | – | – |
24 | 609.6 | 5.54 | 6.35 | 9.53 | 12.7 |
26 | 660.4 | – | – | – | – |
28 | 711.2 | – | – | – | – |
30 | 762 | 6.35 | 7.92 | – | – |
Stainless Steel 304H Seamless Pipe
Stainless Steel 304H Welded Pipe
Stainless Steel 304H ERW Pipe
Stainless Steel 304H EFW Pipe
Stainless Steel 304H Electropolish Pipe
Stainless Steel 304H Square Pipe
Stainless Steel 304H Rectangular Pipe
Stainless Steel 304H Round Pipe
STANDARD | WERKSTOFF NR. | UNS |
SS 304H | 1.4948 | S30409 |
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
SS 304H | 0.10 max | 2 max | 0.75 max | 0.045 max | 0.03 max | 18 – 20 | - | 8 – 10.5 | - |
Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
8.0 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 40 % |
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