Stainless Steel ASTM A268 TP405 Seamless Tube for Power Plants
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Overview
ASTM A268 TP405 is a standard specification for seamless and welded ferritic and martensitic stainless steel tubing for general corrosion-resisting and high-temperature service. The "TP" in the designation stands for "tube, seamless," and "405" is the specific grade of stainless steel.
Composition:
Chemical Composition: The composition of TP405 stainless steel typically includes chromium, manganese, silicon, sulfur, phosphorus, carbon, and iron. It is a ferritic stainless steel with good oxidation resistance.
Mechanical Properties:
Tensile Requirements: The material must conform to certain tensile requirements, including minimum tensile strength, yield strength, and elongation. These properties ensure that the tube has the necessary mechanical strength.
Dimensions and Sizes:
Size Range: ASTM A268 TP405 Stainless Steel Seamless Tubes are available in a range of sizes. The standard specifies the outside diameter and wall thickness requirements for the tubes.
Heat Treatment:
Heat Treatment: Tubes under this specification may undergo heat treatment processes such as annealing or solution annealing to achieve the desired properties and microstructure.
Chemical Composition of ASTM A268 TP405 Stainless Steel Pipes
| C % | Mn % | P % | S % | Si % | Cr % | Ni % | Al % |
| 0.08 max | 1.00 max | 0.04max | 0.03 max | 1.00 max | 11.5-14.5 | 0.50 max | 0.10-0.30 |
Mechanical Properties of ASTM A268 TP405 Stainless Steel Pipes
| Tensile Strength, Mpa | Yield Strength, MPa | Elongation, % | Hardness, HB |
| 415 min | 205 min | 20 min | 207 max |
Specification
| Specifications | ASTM A268 / SA 268 |
| Dimensions | ASTM, ASME and API |
| Size | 1/4″ (6.25mm) to 8″ (203mm), WT 0.02″ (0.5mm) to 0.5″(12mm) |
| Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Specialized in | Large Diameter Size |
| Length | Single Random, Double Random & Cut Length. |
| Form | Round, Square, Rectangular, Hydraulic Etc |
| End | Plain End, Beveled End, Treaded |
Martensitic stainless steel tube S40500 Advantages
- High strength and hardness
- Good corrosion resistance in mild environments
- Good oxidation resistance at high temperatures
- Good wear resistance
- Easily machinable and weldable
Martensitic stainless steel tube S40500 Typical Usages
- Boiler tubes and superheater tubes in power generation plants
- Heat exchanger tubes in chemical processing plants
- Automotive exhaust systems
- Aircraft components
- Surgical and dental instruments
- Cutlery and kitchen knives
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