Alloy 20/UNS N08020
Grade: Incoloy 020 / UNS N08020 / Alloy 20
Sheet/Plate: 0.3mm-150mm
Strip/Foil: 0.02mm-16mm
Pipe: 6mm*0.5mm-1200mm*100mm
Bar: Ф6mm – Ф600mm
Wire: Ф0.01mm – Ф6mm
Others: Forged Rings, Flanges, Elbows, Tees, Reducers etc.
Standard: ASTM/ASME/AMS
- Fast Shipping / Ready Stock
- ISO 9001 Factory
- Custom Cutting
- 100% MTC & SGS Inspection
Alloy 20 is a nickel-iron-chromium alloy stabilized with niobium and enhanced with copper and molybdenum. It provides excellent resistance to sulfuric acid, chloride environments, pitting and crevice corrosion. The alloy combines good fabrication characteristics with reliable performance in severe chemical processing applications.
Chemical Composition (%)
| Element | Content |
| Ni | 32-38 |
| Cr | 19-21 |
| Fe | Balance |
| Mo | 2-3 |
| Cu | 3-4 |
| Nb | Cb+Ta ≤1 |
| Mn | ≤2 |
| Si | ≤1 |
| C | ≤0.07 |
Common Standards
| Product Form | Standard |
| Plate/Sheet | ASTM B463 / ASME SB463 |
| Bar | ASTM B473 / ASME SB473 |
| Seamless Pipe | ASTM B729 / ASME SB729 |
Mechanical Properties (Typical)
| Property | Value |
| Tensile Strength | ≥620 MPa |
| Yield Strength (0.2%) | ≥275 MPa |
| Elongation | ≥40% |
| Hardness | Typical ≤95 HRB |
Application areas
- Chemical processing equipment
- Sulfuric acid plants
- Pharmaceutical equipment
- Heat exchangers
- Pulp and paper industry


Alloy 20 is a nickel-iron-chromium alloy stabilized with niobium and enhanced with copper and molybdenum. It provides excellent resistance to sulfuric acid, chloride environments, pitting and crevice corrosion. The alloy combines good fabrication characteristics with reliable performance in severe chemical processing applications.
Chemical Composition (%)
| Element | Content |
| Ni | 32-38 |
| Cr | 19-21 |
| Fe | Balance |
| Mo | 2-3 |
| Cu | 3-4 |
| Nb | Cb+Ta ≤1 |
| Mn | ≤2 |
| Si | ≤1 |
| C | ≤0.07 |
Common Standards
| Product Form | Standard |
| Plate/Sheet | ASTM B463 / ASME SB463 |
| Bar | ASTM B473 / ASME SB473 |
| Seamless Pipe | ASTM B729 / ASME SB729 |
Mechanical Properties (Typical)
| Property | Value |
| Tensile Strength | ≥620 MPa |
| Yield Strength (0.2%) | ≥275 MPa |
| Elongation | ≥40% |
| Hardness | Typical ≤95 HRB |
Application areas
- Chemical processing equipment
- Sulfuric acid plants
- Pharmaceutical equipment
- Heat exchangers
- Pulp and paper industry
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