Range
| Product Form | Size Range |
|---|---|
| Round Bar Peeled K12 | 35mm - 70mm |
If you do not see what you are looking for, please contact your local service centre with your specific requirements.
Related Specifications
- XM-19
- XM19
- UNS S20910
- Notronic 50
- 1.3964
- ASTM A479/A182
Properties
Chemical Composition
| Chemical Element | % Present |
|---|---|
Carbon (C) | 0.00 - 0.03 |
Chromium (Cr) | 20.50 - 23.50 |
Nickel (Ni) | 11.50 - 13.50 |
Manganese (Mn) | 4.00 - 6.00 |
Phosphorous (P) | 0.00 - 0.04 |
Sulphur (S) | 0.00 - 0.01 |
Silicon (Si) | 0.20 - 0.60 |
Molybdenum (Mo) | 1.50 - 3.00 |
Nitrogen (N) | 0.20 - 0.40 |
Vanadium (V) | 0.10 - 0.30 |
Niobium (Columbium) (Nb) | 0.10 - 0.30 |
Iron (Fe) | Balance |
Mechanical Properties
| Mechanical Property | Value |
|---|---|
0.2% Proof Stress | 380 N/mm2 |
Tensile Strength | 690 N/mm2 |
Hardness Brinell | 293 max HB |
General Physical Properties
| Physical Property | Value |
|---|---|
Density | 7.8 g/cm³ |
Thermal Conductivity | 13.3 W/m.K |
Applications
- Oil & gas industry downhole equipment
- Marine pumps, valves, masts, tie downs, fixtures and fittings
- Food processing equipment
- Process industry equipment in sulphuric acid, nitric acid, polythionic acid, urea production, organic & fatty acids
- Pulp and paper Industry valves and fittings
Characteristics
- Mechanical strength better than that of other austentics including 316/316L
- Greater corrosion resistance than other austenitics
- Good mechanical properties at elevated and sub-zero temperatures
- Good ductility and impact strength maintained at sub-zero temepratures
- Does not become magnetic even when severely cold worked
- Utilises the same fabrication procedures as stainless steel 300 grades
- Utilises the same cooling techniques as stainless steel 300 grades
- Readily weldable using standard processes
- Listed in food handling standards (FDA) as an acceptable material for food contact surfaces
- Listed in MR-1075 for sour service oilfield applications
Additional Information
Features
- Mechanical strength better than that of other austentics including 316/316L
- Greater corrosion resistance than other austenitics
- Good mechanical properties at elevated and sub-zero temperatures
- Good ductility and impact strength maintained at sub-zero temepratures
- Does not become magnetic even when severely cold worked
- Utilises the same fabrication procedures as stainless steel 300 grades
- Utilises the same cooling techniques as stainless steel 300 grades
- Readily weldable usng standard processes
Heat Treatment
Final annealing process performed for several of the applications, is done at 1065°C (1950°F), which is followed by water quenching. In case this material is used in a strongly corrosive environment, annealing should be done at 1121°C (2050°F). This alloy cannot be hardened by heat treatment.
Machinability
XM-19 has machinability characteristics that are similar to other austenitic stainless steels; however it requires slower speeds, more power, and higher rigidity due to its high work hardening rate. It is recommended that coated carbide tooling be used.
Forming
XM-19 can be formed using the same methods applied for other austenitic stainless steels. More power for forming and forging is needed for this alloy. Forging can be done at 1177-1204°C (2150-2200°F).
Corrosion Resistance
XM-19 provides outstanding corrosion resistance - superior to Types 316, 316L, 317 and 317L in many media. For many applications the 1950F (1066C) annealed condition provides adequate corrosion resistance and a higher strength level. In very corrosive media or where material is to be used in the as-welded condition, the 2050F (1121C) annealed condition should be specified.
Testing
Corrosion Examination to ASTM A262 and Permeability Test.
NDT Ultrasonic Examination to ASTM A388/EN10308 Class 2/API 6A PSL3.
NACE MR 0175 / ISO 15156 Required.
NACE MR 0103-2003 Required.
Applicable Standards: ASTM A276, ASTM A479, ASTM A182, AP16APSL3, ASME A479
Welding
Welding of XM-19 can be performed using traditional joining processes.
Caution should be taken while using autogenous, high power density joining processes such as EB or laser welding, due to low FN potential and severe outgassing possibility.
