Chemical composition
C(%)
Si(%)
Mn(%)
P(%)
S(%)
Cr(%)
Ni(%)
¨Q0.15 ¨Q1.0 ¨Q2.0 ¨Q0.2 ¨Q0.06 17.0-19.0 8.0-10.0
Applications
- AISI 303Se alloy is a free-machining stainless steel specifically designed to exhibit improved
machinability. It is a non-magnetic austenitic stainless steel which is not hardenable by heat treatment. Selenium replaces sulfur to produce the free-machining characteristics and has somewhat improved formability over 303. The good mechanical and corrosion-resistant properties of the lowerÂ-sulfur grade are retained to the extent possible.
AISI 303Se should be considered for use in applications such as shafts, valve bodies, valves, valve trim,and fittings. This steel possesses non-galling properties that make disassembly of parts easy and help to avoid scratching or galling in moving parts.
Country Code
- AISI
Standard
- 303Se
Steel Type
303Se
Heat treatment
Solution treatment at 1010--1150 degree Celsius, followed by rapid cooling.
Relate Steel Type
| Steel Type | Country Code | C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | Mo(%) |
|---|---|---|---|---|---|---|---|---|
| 303Se | CNS | ¨Q0.15 | ¨Q1.0 | ¨Q2.0 | ¨Q0.2 | ¨Q0.06 | 17.0-19.0 | ¨R0.15 |
| Y1Cr18-Ni9Se | GB | ¨Q0.15 | ¨Q1.0 | ¨Q2.0 | ¨Q0.2 | ¨Q0.06 | 17.0-19.0 | |
| SUS303Se | JIS | ¨Q0.15 | ¨Q1.0 | ¨Q2.0 | ¨Q0.2 | ¨Q0.06 | 17.0-19.0 | |
| 303Se | AISI | ¨Q0.15 | ¨Q1.0 | ¨Q2.0 | ¨Q0.2 | ¨Q0.06 | 17.0-19.0 |