Alloy 20 Stainless Steel
Alloy 20 stainless steel is a super-austenitic stainless alloy developed for maximum resistance to corrosion by sulfuric acid and other aggressive environments not suitable for typical austentic grades.
Standards
- UNS N08020
- ASTM B473
Applications
- Control Valves
- Pressure Relief Valves
- Centrifugal Pumps
Composition(%)
- Carbon 0.070 Max
- Chromium 19.0-21.0
- Copper 3.0-4.0
- Iron 29.85-44.0
- Manganese 2.0 Max
- Molybdenum 2.0-3.0
- Nickel 32.0-38.0
- Phosphorus 0.0450 Max
- Silicon 1.00 Max
- Sulfur 0.0350 Max
Mechanical Properties
| Material Type | Condition | Ultimate Tensile Strength (PSI) | 0.2% Yield Strength (PSI) | Elongation (% In 2in.) | Reduction Of Area (%) | Hardness Brinell | Hardness Rockwell |
|---|---|---|---|---|---|---|---|
| Alloy 20 | Annealed | 80,000 | 35,000 | 30 | 50 | 160 | * |
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