303L stainless steel powder (UNS S30300) is a low-carbon grade of austenitic stainless steel known for its excellent machinability. It is commonly used in industrial applications where high strength and good formability are required.
303L Stainless Steel Advantages
Stainless steel powder 303L is a free machining, austenitic grade that offers moderate corrosion resistance. This stainless steel is sintered in either a partial vacuum or a hydrogen atmosphere to improve ductility and corrosion resistance. 303L can also be admixed with MnS or MoS2 for added machinability.
303L Stainless Steel Powder Applications
303 Stainless steel powder is a sulfurized grade that is an excellent option for parts that require secondary machining operations, such as food service equipment, pump components and nonmagnetic housings. It is commonly used in
Powder Metallurgy (P/M) applications such as lock hardware, appliance parts, and automotive exhaust system components.
303L Stainless Steel Powder Properties
| PRODUCT |
COMPACTING PRESSURE (TSI) |
GREEN STRENGTH (PSI) |
GREEN DENSITY (GM/CC) |
SINTERED DENSITY (GM/CC) |
SINTERED BREAKING STRENGTH (PSI) |
DIMENSIONAL CHANGE FROM DIE SIZE (%) |
UTS (PSI) |
% ELONG |
RB HARDNESS (APPARENT) |
| 303L |
30
40
50 |
380
900
1030 |
6.23
6.50
6.70 |
6.33
6.60
6.75 |
71,000
91,000
109,000 |
-0.54
-0.44
-0.40 |
41,000
51,000
54,000 |
3.4
4.8
5.8 |
41.0
50.0
68.0 |
Compacting properties were measured on powder blended with 1% lithium stearate. Sintering was done in dissociated ammonia at 2050°F for 45 minutes.
| CHEMICAL COMPOSITION |
| Chromium |
17 - 19% |
Sulfur |
0.15-0.03% max |
| Nickel |
8 - 13% |
Carbon |
0.03% max |
| Manganese |
1% max |
Phosphorus |
0.045% max |
| Silicon |
1% max |
Iron |
Balance |
| PHYSICAL PROPERTIES |
| Apparent Density |
2.8 g/cm3 |
| Flow Rate |
30 sec/50g |