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304H Stainless Steel Pipe, 304H Stainless Steel Tube

304H Stainless Steel Seamless Pipes & Tubes Grades

304H Stainless Steel Seamless Pipes & Tubes

 

ASTM A312/213 304 Stainless Steel Seamless Pipes & Tubes | ASTM A312/213 304 Stainless Steel ERW Pipes & Tubes

One of the most versatile and commonly used stainless steels on the market, Grade 304 stainless steel is the most standard used alloy of this type. Essentially, Grade 304 is an austenitic chromium alloy which is also known as an "18/8" stainless as the make-up of the steel is 18% chromium and 8% nickel.Check here 304H Stainless Steel Pipe dimensions.

Size : 1/8"NB TO 42"NB IN

Schedule: SCH 10, SCH20, SCH30, SCH40, STD, SCH60, XS, SCH80, SCH120, SCH140, SCH160, XXS
Type
: Seamless / ERW / Welded / Fabricated / LSAW Pipes
Form
: Round, Square, Rectangular, Hydraulic Etc.
Length
: Single Random, Double Random & Cut Length.
End
: Plain End, Beveled End, Treaded. 

Nickel Alloy Pipe Standard:

• UNS 10276 (HASTELLOY C 276 Pipe)
• UNS 2200 (NICKEL 200 Pipe)
• UNS 2201 (NICKEL 201 Pipe )
• UNS 4400 (MONEL 400 Pipe)
• UNS 8020 (ALLOY 20 Pipe)
• UNS 8825 INCONEL (825 Pipe)
• UNS 6600 (INCONEL 600 Pipe )
• UNS 6601 (INCONEL 601 Pipe)
• UNS 6625 (INCONEL 625 Pipe)

304H Stainless Steel Pipes and Tubes Product Range
304H Stainless Steel Pipes and Tubes Specifications: ASTM A/ASME SA213/A249/A269/A312/A358 CL. I to V ASTM A789/A790
304H Stainless Steel Pipes and Tubes Sizes (Seamless): 1/2" NB - 16" NB
304H Stainless Steel Pipes and Tubes Sizes (ERW): 1/2" NB - 24" NB
304H Stainless Steel Pipes and Tubes Sizes (EFW): 6" NB - 100" NB

304H Stainless Steel Pipes and Tubes Wall Thickness available:
Schedule 5S - Schedule XXS (heavier on request)

304H Stainless Steel Pipes and Tubes Other Materials Testing:

NACE MR0175, H2 SERVICE, OXYGEN SERVICE, CRYO SERVICE, etc.

304H Stainless Steel Pipes and Tubes Dimensions:
 All Pipes is manufactured and inspected/tested to the relevant standards including ASTM, ASME and API etc.


Type 304H Stainless Steel Tube  has excellent welding and deep drawing characteristics - it is easy to fabricate, easy to clean and aesthetically pleasing to the eye. 
Applications of Grade 304 Stainless Steel

The steel is common throughout industry particularly in food processing as the material is not susceptible to corrosion from acids found in common foodstuffs. As a consequence, such steel is ideal for items such as sinks, work surfaces, preparation areas and refrigerators. It is also a perfect material for use in the pharmaceutical industry for environments such as clean rooms. 

Grade 304H cannot be included in this equation due to the steel's higher carbon content which is intended for use in elevated temperature applications.

304H Stainless Steel Pipes and Tubes Composition
Typical compositional ranges for grade 304 stainless steels are given in table 1.

Table 1. Composition ranges for 304 grade stainless steel

Grade C Mn Si P S Cr Mo Ni N
304H min. 0.04 - - - - 18.0 - 8.0 -
max. 0.10 2.0 0.75 0.045 0.030 20.0 10.5

304H Stainless Steel Pipes and Tubes Mechanical Properties
Typical mechanical properties for grade 304 stainless steels are given in table 2.

Table 2. Mechanical properties of 304 grade stainless steel

Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min Hardness
Rockwell B (HR B) max Brinell (HB) max
304H 515 205 40 92 201
304H also has a requirement for a grain size of ASTM No 7 or coarser.


304H Stainless Steel Pipes and Tubes Physical Properties
Typical physical properties for annealed grade 304 stainless steels are given in table 3.

Table 3. Physical properties of 304 grade stainless steel in the annealed condition

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
304H 8000 193 17.2 17.8 18.4 16.2 21.5 500 720

304H Stainless Steel Pipes and Tubes Grade Specification Comparison
Approximate grade comparisons for 304 stainless steels are given in table 4.

Table 4. Grade specifications for 304 grade stainless steel

Grade UNS No Old British Euronorm Swedish SS Japanese JIS
BS En No Name
304H S30409 304S51 - 1.4948 X6CrNi18-11 - -
These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted.

304H Stainless Steel Pipes and Tubes Corrosion Resistance

Excellent in a wide range of atmospheric environments and many corrosive media. Subject to pitting and crevice corrosion in warm chloride environments, and to stress corrosion cracking above about 600C. Considered resistant to potable water with up to about 200mg/L chlorides at ambient temperatures, reducing to about 150mg/L at 600C.

304H Stainless Steel Pipes and Tubes Heat Resistance

Good oxidation resistance in intermittent service to 8700C and in continuous service to 9250C. Continuous use of 304 in the 425-8600C range is not recommended if subsequent aqueous corrosion resistance is important. Grade 304L is more resistant to carbide precipitation and can be heated into the above temperature range.

Grade 304H has higher strength at elevated temperatures so is often used for structural and pressure-containing applications at temperatures above about 5000C and up to about 8000C. 304H will become sensitised in the temperature range of 425-8600C; this is not a problem for high temperature applications, but will result in reduced aqueous corrosion resistance.

304H Stainless Steel Pipes and Tubes Heat Treatment

Solution Treatment (Annealing) - Heat to 1010-11200C and cool rapidly. These grades cannot be hardened by thermal treatment.