ASTM A268 UNS S44660 Stainless Steel Tubes ( Pipes ),ASTM A268 TP446 tube
We are the manufacturer ,Supplier & Exporter of ASTM A268 UNS S44660 Stainless Steel Tubes ( Pipes ),ASTM A268 TP446 tube.
The grade 446 stainless steel is a ferritic, non-heat treatable stainless steel that provides good resistance to high temperature oxidation and corrosion. The following datasheet provides more details of grade 446 stainless steel.
ASTM A268 UNS S44660 Stainless Steel Seamless Tubes And Pipes
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
Characteristics
- Significantly higher modulus that allows the use of a lighter wall with less problem of vibration
- Higher steam and water droplet erosion resistance allowing a greater cushion in cases where upset conditions may occur
- Weldability to other stainless steels
- Higher strength and modulus which allows more tolerance for those tough designs and installations
- Superior Corrosion Resistance
Typical applications
used in power plant condensers, heat exchangers and desalination plants due to its excellent corrosion resistance,
good thermal conductivity, and superior mechanical and physical properties
ASTM A268 UNS S44660 TUBE Chemical Composition
The chemical composition of grade 446 stainless steel is outlined in the following table.
| Element | Content (%) |
|---|---|
| Iron, Fe | 73 |
| Chromium, Cr | 23.0 – 27.0 |
| Manganese, Mn | 1.50 |
| Silicon, Si | 1.0 |
| Nickel, Ni | 0.25 |
| Carbon, C | 0.20 |
| Phosphorous, P | 0.040 |
| Sulfur, S | 0.030 |
ASTM A268 UNS S44660 TUBE Physical Properties
The following table shows the physical properties of grade 446 stainless steel.
| Properties | Metric | Imperial |
|---|---|---|
| Density | 7.80 g/cm3 | 0.282 lb/in³ |
ASTM A268 UNS S44660 TUBE Mechanical Properties
The mechanical properties of grade 446 stainless steel are displayed in the following table
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 550 MPa | 79800 psi |
| Yield strength (@strain 0.200%) | 345 MPa | 50000 psi |
| Elastic modulus | 200 GPa | 29000 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break | 20% | 20% |
| Hardness, Brinell (estimated from Rockwell B) | 159 | 159 |
| Hardness, Knoop (estimated from Rockwell B) | 173 | 173 |
| Hardness, Rockwell A (estimated from Rockwell B) | 51.1 | 51.1 |
| Hardness, Rockwell B | 83 | 83 |
| Hardness, Vickers (estimated from Rockwell B) | 159 | 15 |
1.Outer Diameter: 1/4″ – 16″ seamless
2.Wall thickness:1 mm-50mm
3.Length: 6 metre or as per customer request
