Ferritic Martensitic Pipes
ASME SA 268 TP UNS S - 44660
Reliable Steel is a leading distributors and exporter of Ferritic Martensitic pipes in mostly countries. We offer best quality ferritic martensitic pipes but we are specialised in ASTM A268 UNS 44660 tubes. These tubes are typically utilized in power plant condensers, heat exchangers and desalination plants due to its excellent corrosion resistance.
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The material designation ASME SA 268 UNS S44660 refers to a specific grade of seamless and welded ferritic stainless steel tubing intended for general corrosion-resisting and high-temperature service. It is also referred to by the material grade name "26-3-3".
The ferritic structure of UNS S44660 stainless steel provides a high strength/low work hardening material with good ductility. These properties allow high design stress limits with good fabrication characteristics.
Because of the nickel addition, stainless S44660 ( 26-3-3 ) has a lower ductile-to-brittle transition temperature than similar ferritic steels without nickel additions.
S44660 stainless is specially engineered to reduce life-cycle cost by preventing tube leaks, ensuring tube cleanliness, eliminating chemical treatment and reducing CO2 costs.ASTM A268 UNS S44660
ASTM A268 UNS S44660 TUBE Chemical Composition
| C % |
Mn % |
P % |
S % |
Si % |
Cr % |
Ni % |
Mo % |
N % |
Ti+Nb % |
| 0.03 max |
1.00 max |
0.040 max |
0.030 max |
1.00 max |
25.0-28.0 |
1.00-3.50 |
3.00-4.00 |
0.04 |
0.20-1.00, & 6(C+N) min |
ASTM A268 UNS S44660 TUBE Physical Properties
| Properties |
Metric |
Imperial |
| Density |
7.80 g/cm3 |
0.282 lb/in³ |
ASTM A268 UNS S44660 TUBE Mechanical Properties
| Tensile Strength, Mpa |
Yield Strength, MPa |
Elongation, % |
Hardness, HB |
| 585 min |
450 min |
20 min |
265 max |