Nitronic 60
| Chemical Analysis | |
|---|---|
| C | Carbon 0.15 max |
| Mn | Manganese 4.0 – 8.0 |
| P | Phosphorus 0.04 max |
| S | Sulfur 0.04 max |
| Si | Silicon 2.50 – 4.50 |
| Cr | Chromium 16.5 – 21.0 |
| Mo | Molybdenum 0.5 – 2.5 |
| Ni | Nickel 6.0 – 10.0 |
| N | nitrogen 0.05/0.25 |
General characteristics of Nitronic 60
This is a high manganese, high silicon alloy with nitrogen strengthening. It exhibits very good self-mated galling and metal-to-metal wear resistance.
Applications
This alloy will be considered where parts are in relative motion, under load without lubricants. Typical applications are as follows:
- Components in food and drug processing,
- Forged bolts, nuts and other fasteners in electronic and nuclear industries
- Forged pump and valve fittings in chemical processing
- Surgical instruments, petrochemical equipment, bridge pins
- Aerospace and Oil field industries
Forging
The alloy may be heated to 2100/2300ºF (1150/1260ºC) as a start-forge temperature. Forging should not be carried out below 1700ºF (925ºC) and forgings may be air cooled. For maximum corrosion resistance, parts should be annealed after forging.
Heat treatment
Annealing should be carried out at 1950/2150ºF (1065/1175ºC) followed by water quenching.
Machinability
The alloy machines at about 50 percent of the rate of 304 and 316 type stainless steels. Rigid equipment and heavy positive feeds are recommended.
Weldability
The alloy may be satisfactorily welded by shielded fusion and resistance welding processes. Oxyacetylene welding is not recommended due to a danger of carbon pickup in the weld. A postweld anneal is recommended to restore resistance to intergranular corrosion.
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