ALLOY 825 & ALLOY 28 TUBE
Mechanical Tubing & OCTG
UNS N08825 : ASTM B423 UNS N080287 : ASTM B668GENERAL SCOPE
GENERAL SCOPE
These nickel chromium alloys combine excellent corrosion resistance with a wide range of mechanical strengths.
They are used extensively within chemical processing plants and down hole tubulars in deep, sour gas wells.
CHEMICAL COMPOSITION
UNS N08825
| C | Si | Mn | P | S | Cr | Ni | Mo | CU | Ti | AI | Fe | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | . | . | . | . | . | 19.50 | 38.00 | 2.50 | 1.50 | 0.60 | . | 22.00 |
| Max | 0.05 | 0.50 | 1.00 | . | 0.030 | 23.50 | 46.00 | 3.50 | 3.00 | 1.20 | 0.20 | 0.00 |
UNS N08028
| C | Si | Mn | P | S | Cr | Ni | Mo | CU | Fe | |
|---|---|---|---|---|---|---|---|---|---|---|
| Min | . | . | . | . | . | 26.00 | 30.00 | 3.00 | 0.06 | 0.00 |
| Max | 0.03 | 1.00 | 2.50 | 0.030 | 0.030 | 28.00 | 34.00 | 4.00 | 1.40 | 0.00 |
MECHANICAL PROPERTIES
Condition: UNS N08825 Annealed
| U.T.S | 85 KSI Min |
| 0.2% Proof Stress | 35 KSI Min |
| Elongation | 30 % |
Condition: UNS N08028 Annealed
| U.T.S | 73 KSI Min |
| 0.2% Proof Stress | 31 KSI Min |
| Elongation | 40 % |
Condition: UNS N08825 Cold Worked
| U.T.S | 125 KSI Min |
| 0.2% Proof Stress | 100 KSI Min |
| Elongation | 5 % |
Condition: UNS N08028 Cold Worked
| U.T.S | 120 KSI Min |
| 0.2% Proof Stress | 90 KSI Min |
| Elongation | 5 % |