J&J Alloys
J & J Alloys is an industry leading manufacturer of nickel alloy fitting and flanges with a wide array of standard as well as specialty products we are capable of producing.
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Alloy 20
Description
Alloy 20 is one of the so-called “Super” stainless steels that was designed for maximum resistance to acid attack. Its nickel, chromium, molybdenum and copper content contribute to its overall resistance to chlorideon stress corrosion cracking and general pitting attack. The alloy is stabilized with columbium to minimize carbide precipitation during welding.
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
Typical Applications
- Chemical and allied industries
- Food and dye production
- Heat exchangers
- S02 scrubbers and other severe environments
- Tanks
- Pickling Racks
- Valves
| AVAILABILITY | SPECS | |
|---|---|---|
| 150# FITTINGS | 1/4" - 2" | B366 |
| FORGINGS | B462 | |
| TENSILE REQUIREMENTS | |
|---|---|
| TENSILE STRENGTH | (KSI) 80 |
| YIELD STRENGTH | (KSI) 35 |
| ELONGATION | 30% MIN. |
KSI can be converted to MPA (Megapascals) by multiplying by 6.895.
| C | NB + TA | CR | CU | FE | MN | MO | NI | P | S | SI | |
| MAX | 8X Carbon | MAX | MAX | MAX | MAX | ||||||
| 0.07 | 1.0 | 19.0 - 21.0 | 3.0 - 4.0 | BAL | 2.0 | 2.0 - 3.0 | 32.0 - 38.0 | 0.045 | 0.035 | 1.0 | |
| CHEMICAL COMPOSITION % | |||||||||||