Alloy 20 is one of the so-called "Super" stainless steels that was designed for maximum resistance to acid attack. It's nickel, chromium, molybdenum and copper content contribute to its overall resistance to chloride on stress corrosion cracking and general pitting attack. The alloy is stabilized with columbium to minimize carbide precipitation during welding. It has good mechanical properties and can be fabricated with comparative ease.
Alloy 20 Fasteners
Specifications
| Standards |
Designation |
| ASTM |
B 473 |
| ASME |
SB 473 |
| Standard |
Alloy 20 |
| UNS |
N08020 |
| Werkstoff Nr. |
2.4660 |
Alloy 20 Fasteners Inventory Stock at factory rate:-
Dimensions
Specifications
| Standard |
Alloy 20 |
| UNS |
N08020 |
| Werkstoff Nr. |
2.4660 |
Chemical Composition
|
Alloy 20 |
| Ni |
32 – 38 |
| Fe |
Bal |
| Cr |
19 – 21 |
| Cu |
3 – 4 |
| Mo |
2 – 3 |
| Nb |
0.1 – 0.3 |
| C |
0.02 max |
| Mn |
1 – 2 |
| P |
0.02 max |
| S |
0.005 max |
| Si |
0.7 max |
Mechanical & Physical Properties – Alloy 20
| Density |
8.1 g/cm3 |
| Melting Point |
1443 °C (2430 °F) |
| Tensile Strength |
Psi – 80000 , MPa – 551 |
| Yield Strength (0.2%Offset) |
Psi – 35000 , MPa – 241 |
| Elongation |
30 % |
AVAILABILITY
Seamless Pipe 1/2" - 8"
Weld Pipe 1/2" - 12"
Butt-Weld Fittings 1/2" - 12"
Flanges 1/2" - 12"
Pressure Fittings 1/2" - 2"
150# Fittings 1/4" - 2"
Tubing 1/4", 3/8", 1/2"
Valves 1/2" - 12"
Bar 1" - 8"
SPECIFICATIONS |
ASTM B729, ASTM B464, ASTM B366, ASTM B473, ASTM B462 |
ASME SB729, ASME SB464, ASME SB366, ASME SB473, ASME SB462 |
DESIGN FEATURES
- Superior resistance to stress-corrosion cracking in boiling 20 to 40% sulfuric acid.
- Excellent general corrosion resistance to sulfuric acid.
- Excellent resistance to chloride stress corrosion cracking.
- Excellent mechanical properties and fabricability.
- Minimal carbide precipitation during welding.
TENSILE REQUIREMENTS
Tensile Strength (KSI) 80
Yield Strength (KSI) 35KSI can be converted to MPA (Megapascals) by multiplying by 6.895
Main Export Market
- Eastern Europe
- North America
- Mid East/Africa
- Central/South America
- Asia
- Western Europe
- Australasia
- UAE
Sales Locations
U.A.E,
Oman,
Saudi Arabia,
Qatar,
Bahrain,
Egypt,
Turkey
Singapore,
Thailand,
Malaysia
Indonesia
Poland
Italy
Portugal
Spain
Brazil
Chile
Venezuela
Costa Rica
USA
Canada
Angola
Sri Lanka
Russia
