Alloy steels are designated by AISI four-digit numbers. They are more susceptible to mechanical and heat treatments than carbon steels. They comprise different types of steels with compositions which exceed the limitations of B, C, Mn, Mo, Ni, Si, Cr, and Va in the carbon steels.
Global Supply Line stocks and indents a large range of ‘chrome-moly’ valves. These valves are manufactured from low alloy steel containing chromium and molybdenum making them suitable for higher temperature service especially for higher pressure and temperature combinations. In addition, these valves have the added advantage of anti-corrosive properties.
DESCRIPTION
Chrome moly alloy is lightweight but strong, (similar to AISI 4130). With the additions of molybdenum and chromium, chrome moly alloy offers exceptional weldability along with oxidation and scaling resistance.
DESIGN FEATURES
- Resistant to scaling and oxidation
- Harden through heat treatment
- Excellent weldability
- Strong and tough
- Excellent ductility
APPLICATIONS
- Pressure piping
- Pressure vessels
- Welded tubing applications
Bar Specification
| UNS | Type | AMS | ASTM |
|---|---|---|---|
K21590 | F22 | - | A182 |
Chemical Composition
| Grade | C | Mn | Si | S | P | Cr | Mo |
|---|---|---|---|---|---|---|---|
F22 | 0.05-0.15 | 0.3-0.6 | 0.5 | 0.03 | 0.045 | 0.8-1.25 | 0.044-0.65 |
Mechanical Properties
| Grade | Tensile Strength (MPa) | Yeild Strength (MPa) | Elongation % |
|---|---|---|---|
F22 | 205 | 415 | 20 |