Overview
304H stainless steel is a high carbon austenitic stainless steel that offers excellent weldability and traceability, and good oxidation resistance in intermittent service up to 1500°F,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.
304H Stainless Steel Main Features
1.Austenitic stainless steel alloyed with Copper and Boron to increase the creep strength
2.Good corrosion resistance properties in high temperature
3.Good creep resistance in high temperatures, specially in the range of 580°C (1076°F) to 640°C (1184°F) Inner surface shot peening treatment possible upon request.
Physical properties
| Grade | Density | Elastic | Mean Coefficient of Thermal | Thermal Conductivity | Specific Heat 0-1000C (J/kg.K) | Electrical Resistivity (n.m) |
| (kg/m3) | Modulus (GPa) | Expansion (m/m/0C) | (W/m.K) |
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 |
Stainless steel 304H Seamless steel tubes surface finish
| Surface Finish | Internal Surface(ID) | Exterbal Surface(OD) |
| Roughness Average(RA) | Roughness Average(RA) |
| μ inch | μm | μ inch | μ m |
| AP | Annealed & Pickled | Not defined | Not defined | 40 or Not defined | 1.0 or Not defined |
| BA | Beight Annealed | 40,32,25,20 | 1.0,0.8,0.6,0.5 | 32 | 0.8 |
| MP | Mechanical Polish | 40,32,25,20 | 1.0,0.8,0.6,0.5 | 32 | 0.8 |
| EP | Electro Polish | 15,10,7,5 | 0.38,0.25,0.20;0.13 | 32 | 0.8 |
Specification
| Ends | Plain end |
| Color | silver |
| Delivery time | within 15 -20 days. |
| Payment Terms | 40% prepayment Balance before lodaing. |
| Shipping Terms | FOB NINGBO, after the inspection of goods at supplier's warehouse |
| Package | Standard export seaworthy package,or as required. |
| Diameter | 3-1220mm |
| Surface finish | Polishing/pickling/mirror/annealing |
Mechanical Properties
| 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 |
| 95 | 217 |
Product Testing
Coating Thk Test
Geometry inspection
Ultrasonic Inspection
Nondestructive Testing
Hydrostatic Testing
304H stainless steel pipe Usage
Oil refining
Gas and chemical industry
Industrial boilers
Pressure vessels
Heat exchangers
Pipelines and condensers.
Chemical Composition Of 304H
| Grade | Cr | Ni | Mn | Si | C | P | S |
| 304H | 18-20 | 8-10.5 | 2 | 0.75 | 0.04-0.10 | 0.045 | 0.030 |
Package Process
1.With plastic cap to protect both ends
2.Weaving bag wrapped outside the pipe
3.Then pack into wooden case.
Shipment package image
Why choose us
Product Tags:
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304H Seamless Stainless Steel Pipe 1/2" NB In Thickness Schedule 10 0.1-200mm Images
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