Table of Contents
ASTM B409 specification covers alloys UNS N08120, UNS N08890, UNS N08800, UNS N08810, and UNS N08811 in the form of rolled plate, sheet, and strip. Alloy UNS N08800 is typically used at service temperatures up to 1100°F (593°C). Alloys UNS N08120, UNS N08810, UNS N08811, and UNS N08890 are suitable for temperatures above 1100°F (593°C), offering superior resistance to creep and rupture, and they are annealed to develop a controlled grain size for optimum properties in this temperature range.
ASTM B409 Chemical Requirements
| Element | Composition Limites, % | ||
| Alloy N08120 | Alloys N08890 | Alloys N08800,N08810 and N08811 | |
| Nickel | 35.0-39.0 | 40.0-45.0 | 30.0-35.0 |
| Chromium | 23.0-27.0 | 23.0-28.5 | 19.0-23.0 |
| Iron | remainder (1) | remainder | ≥39.5 (1) |
| Manganese | ≤1.5 | ≤1.5 | ≤1.5 |
| Carbon | 0.02-0.10 | 0.06-0.14 | (2) |
| Copper | ≤0.50 | ≤0.75 | ≤0.75 |
| Silicon | ≤1.0 | 1.0-2.0 | ≤1.0 |
| Sulfur | ≤0.03 | ≤0.015 | ≤0.015 |
| Aluminum (3) | ≤0.4 | 0.05-0.60 | 0.15-0.60 |
| Titanium (3) | ≤0.2 | 0.15-0.60 | 0.15-0.60 |
| Columbium | 0.4-0.9 | … | … |
| Molybdenum | ≤2.5 | 1.0-2.0 | … |
| Niobium | … | 0.2-1.0 | … |
| Tantalum | … | 0.10-0.60 | … |
| Phosphorus | ≤0.04 | … | … |
| Tungsten | ≤2.5 | … | … |
| Cobalt | ≤3.0 | … | … |
| Nitrogen | 0.15-0.30 | … | … |
| Boron | ≤0.01 | … | … |
NOTE:
- (1) Iron shall be determined arithmetically by difference.
- (2) Alloy UNS N08800:0.10 max.
Alloy UNS N08810:0.05-0.10.
Alloy UNS N08811:0.06-0.10. - (3) Alloy UNS N08811: Al+Ti,0.85-1.20.
FAQ
ASTM B409 products are available in plates, sheets, and strips, which can be customized according to specific requirements.
More information about ASTM B409:
