Metal Tubular ProductsBoiler, superheater, and heat-exchanger tubes made of seamless austenitic and ferritic steel and designated Grades T5, T9, T11, T12, T22, T91, etc. are covered by ASTM A213.
The tubing sizes and thicknesses that are typically provided in accordance with this standard range from 0.015 in. [0.4 to 12.7 mm] in minimum wall thickness to 0.500 in. [0.4 to 12.7 mm] in average wall thickness, if specified in the order. Other diameters of tubing are acceptable as long as they meet all other specifications of this specification. .
Due to the chemical composition of Molybdenum (Mo) and Chromium (Cr), A213 is frequently referred to as a chrome moly tube. Steel's strength, elastic limit, wear resistance, impact properties, and hardenability are all improved by molybdenum. Moly makes chromium steel less prone to embrittlement, slows down grain growth, and increases resistance to softening. The best addition for boosting high temperature creep strength is molybdenum. Additionally, it prevents pitting and strengthens the steel's resistance to corrosion. The primary component of stainless steel is chromium, sometimes known as chrome. Stainless steel is any steel that contains at least 12% chrome. Chrome is essentially unique in its ability to withstand oxidation at high temperatures. At room temperature, chrome increases tensile, yield, and hardness. The structure steel alloyed with chrome moly Pipe
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Specification:
Chromium (Cr): Typically around 4-6%
Molybdenum (Mo): Typically around 0.45-0.65%
Carbon (C): Maximum of 0.15%
Manganese (Mn): 0.30-0.60%
Silicon (Si): Maximum of 0.50%
Chemical composition of A213 T5 Alloy Steel seamless tubes pipes
| Compositions | Data |
| UNS Designa-tion | K41545 |
| Carbon(max.) | 0.15 |
| Manganese | 0.30-0.60 |
| Phosphorus(max.) | 0.025 |
| Silicon(max.) | 0.50 |
| Chromium | 4.00-6.00 |
| Molybdenum | 0.45-0.65 |
| Other Elements | … |
Mechanical Properties of A213 T5 Alloy Steel seamless tubes pipes
| Properties | Data |
| Tensile strength, min, (MPa) | 415 Mpa |
| Yield strength, min, (MPa) | 205 Mpa |
| Elongation, min, (%), L/T | 30/20 |
Advantages of A213 T5 Alloy Steel seamless tubes pipes
- Good general corrosion resistance and high strength
- Good sulfide stress corrosion resistance
- Resistance to chloride pitting and crevice corrosion
- Higher resistance to chloride stress corrosion cracking
- Easy to weld and conform
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Applications Industry
| Pharmaceutical Equipment | Chemical Equipment |
| Sea Water Equipment | Heat Exchangers |
| Heat Exchangers | Gas Processing |
| Condensers | Specialty Chemicals |
| Pulp and Paper Industry | Pharmaceuticals |
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