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Table 1. Composition ranges for 304H grade stainless steel
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 304 | min. max. | - 0.08 | - 2.0 | - 0.75 | - 0.045 | - 0.030 | 18.0 20.0 | - | 8.0 10.5 | - 0.10 |
| 304L | min. max. | - 0.030 | - 2.0 | - 0.75 | - 0.045 | - 0.030 | 18.0 20.0 | - | 8.0 12.0 | - 0.10 |
| 304H | min. max. | 0.04 0.10 | - 2.0 | - 0.75 | -0.045 | - 0.030 | 18.0 20.0 | - | 8.0 10.5 | - |
304H Stainless Steel Pipes and Tubes Mechanical Properties Typical mechanical properties for grade 304H stainless steels are given in table 2.
Table 2. Mechanical properties of 304H 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 | ||||
| 304 | 515 | 205 | 40 | 92 | 201 |
| 304L | 485 | 170 | 40 | 92 | 201 |
| 304H | 515 | 205 | 40 | 92 | 201 |
| 304H also has a requirement for a grain size of ASTM No 7 or coarser. | |||||
Specifications:
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Range:15 NB UP TO 600 NB IN SCH 5S, 10S,10, 20, 40S, 40, STD, 60, 80S, 80, XS, 100, 120, 140, 160 & XXS
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Stainless Steel Pipes are available in the following Grades: ASTM / ASME SS310H
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Type: Seamless / ERW / Welded/ Fabricated
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Form: Round, Square, Rectangular, Hydraulic etc.
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Length: Single Random, Double Random & Cut Length
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End: Plain End, Bevelled End, Treaded
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Value Added Services:
Hot Dipped Galvanizing
Epoxy & FBE Coating
Electro Polish
Draw & Expansion
