| Specification: | ASTM A268. ASME SA268 | Grade: | TP430 |
|---|---|---|---|
| Type: | Seamless， Welded | Test: | NDT， IBR |
| Finish: | Annealed & Pickled， Bright Annealing， Polished | Surface: | Polishing， Mirro Surface， Bright， Pickling |
Good Corrosion Resistance Seamless Tube ASTM A268 TP430 1.4016
ASTM A268 is a Standard specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service， the grades contain TP410， TP405， TP420， TP430， TP430Ti， TP403， TP409， TP444， TP439 and TP446.
This specification covers a number of grades of nominal-wall-thickness， stainless steel tubing for general corrosion-resisting and high-temperature service. Most of these grades are commonly known as the “straight-chromium” types and are characterized by being ferromagnetic. Two of these
grades， TP410 and UNS S41500， are amenable to hardening by heat treatment， and the high-chromium， ferritic alloys are sensitive to notch-brittleness on slow cooling to ordinary temperatures. These features should be recognized in the use of these materials.
The tubes shall be made by the seamless or welded process with no filler metal added， tubes shall be reheated to a temperature of 1200.F [650.C] or higher and cooled to meet the requirements of this specification， All tubes shall be free of excessive mill scale， suitable for inspection. A slight amount of oxidation will not be considered as scale.
430 Stainless Steel is a low-carbon plain chromium ferritic stainless steel. The steel has good corrosion resistance in mildly corrosive environments and good resistance to oxidation at elevated temperature. In the annealed condition the steel is ductile， does not harden excessively during cold work and can be formed using a large variety of roll forming or mild stretch-bending operations， as well as the more common drawing and bending processes.
A268 TP430 Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| TP430 | min. max. | – 0.12 | – 1.00 | – 1.00 | – 0.040 | – 0.030 | 16.0 18.0 | – | – 0.75 | – |
TP430 Equivalent Material
STANDARD | WERKSTOFF NR. | UNS | JIS | KS |
TP430 | 1.4016 | S43000 | SUS430 | STS430 |
ASTM A268 Tensile Requirement
| Grade and UNS Designation | Tensile strength， min， ksi[MPa] | Yield strength， min ksi[MPa] | ElongationA in 2 in or 50 mm， min，% |
| TP 405 S40500 | 30[415] | 30[205] | 20 |
| … S40800 | 55[380] | 30[205] | 20 |
| TP 410 S41000 | 60[415] | 30[215] | 20 |
| TP 429， TP 430， and TP 430 Ti S429000， S43000， and S43036 | 60[415] | 35[240] | 20 |
ASTM A268 ASME SA268 430 Stainless Steel Mechanical Properties
| Material Grade | Matrial Number | Tensile Strength Rm N/mm² ksi(MPa) min | Yield Strength Rp0.2% N/mm²(MPa) min | Elongation (%) | Brinell Hardness HBW max | Rockwell Hardness HRB max |
| TP430 | S43000 | 60 (415) | 35 (240) | 20 | 190 | 90 |
Applications
-Refining
-Refrigeration
-Petrochemical
-Gas transmission
-Pulp and paper
-Heating and Air Conditioning
-Chemical & Electric Power
