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ASTM A790, ASTM A928, S32205, S31803, S32750, S32760, S31254 Duplex Steel Pipe
Overview
ASTM A790 S32205 is a specification for austenitic stainless steel seamless and welded pipe.Specifically, S32205 is a duplex stainless steel, also known as 2205 stainless steel.It consists of the elements chromium (Cr),nickel (Ni),molybdenum (Mo),and nitrogen (N),and has high corrosion resistance and good mechanical properties.
ASTM A790 is a standard specification for stainless steel piping developed by the American Society for Testing and Materials (ASTM).The specification covers the requirements for dimensions,chemical composition,mechanical properties,etc. for seamless and welded piping in different grades and types of stainless steel materials.
Chemical Composition of ASTM A790 S32205
| Grade | C | Mn | S | P | Si | Ni | Cr | Mo | N | |
| S32205 | Min | 4.5 | 22.0 | 3.0 | 0.14 | |||||
| Max | 0.03 | 2.0 | 0.02 | 0.03 | 1.0 | 6.5 | 23.0 | 3.5 | 0.20 |
Mechanical Property of ASTM A790 S32205
| Grade | Tensile Str Ksi(Mpa) | Yield Str Ksi(Mpa) | Elongation(%) | Brinell(HBW) | Rockwell C(HRC) |
| S32205 | ≥95(655) | ≥65(450) | ≥25 | ≥290 | ≥30 |
Wall Thickness Tolerance of ASTM A790
| OD Range | t/D Ratios | Wall Thickness Tolerance | |
| Under(-) | Over(+) | ||
| 1/8"~2 1/2" (Incl.) | All | 12.5% | 20% |
| 3"~18" (Incl.) | t/D up to 5% Incl. | 12.5% | 22.5% |
| >18" (Incl.) | t/D up > 5% Incl. | 12.5% | 15% |
| >18" Welded | All | 12.5% | 17.5% |
| >18" Seamless | t/D up to 5% Incl. | 12.5% | 22.5% |
| t/D up > 5% Incl. | 12.5% | 15% | |
Duplex Stainless Steel Pipe Application:
Petrochemical
Chemical
Oil and Gas
Pulp & Paper
Power Plant
Food Processing Industry
Energy Industry
