These titanium-bearing stainless steels are stabilized against carbide precipitation. They are designed for operation within the damaging temperature range where carbide precipitation develops.
In this type of steel, the carbon combines preferentially with titanium to form a harmless titanium carbide, leaving the chromium in solution to maintain full corrosion resistance. Type 321 is basic type 304 modified by adding titanium in an amount at least 5 times the carbon–plusnitrogen contents
Availability – Stainless Steel 321/321H
Seamless Pipe :1/2” – 16”
Weld Pipe: 6” – 12″
Butt-Weld Fittings :1/2” – 12”
Butt-Weld Flanges:1/2” – 12”
Flanges :1/2” – 8”
Specifications – Stainless Steel 321/321H
| ASTM | A312, A403,A182, A479, A276 |
| ASME | SA312, SA403, SA182 SA479, SA276 |
Chemical Composition – Stainless Steel 321/321H
| C | Cr | Mn | Ni | P | S | Si | Ti |
|---|---|---|---|---|---|---|---|
| Max | Max | Max | Max | Max | |||
| 0.08 | 17.0 – 19.0 | 2.0% | 9.0 – 12.0 | 0.045% | 0.030% | 1.00 | Trace* |
Typical Applications – Stainless Steel 321/321H
- High temperature chemical process
- Heat exchanger tubes
- Refineries
- High temperatures steam service
Tensile Requirements – Stainless Steel 321/321H
Tensile Strength (KSI): 75
Yield Strength (KSI): 30
KSI can be converted to MPA (Megapascals) by multiplying by 6.895.