Stainless steel powder 409L/409CB is a ferritic, weldable grade of stainless steel with key performance features, including high compressibility, enhanced green strength and good sinterability. This stabilized grade provides excellent corrosion resistance and has the capacity to provide high-caliber mechanical properties due to the high temperature sintering response.
409L/409CB’s versatility also results from Cb being less prone to oxidation than Ti. In addition, the oxide is unable to combine with carbon and the Cb forms a stable carbide which prevents coarsening of carbides and grains in the weld’s HAZ.
409L/409CB Stainless steel is a prime candidate for automotive exhaust system applications, among other uses. 409LNI Powder has added nickel for new automotive specifications.
Ferritic stainless steel powdered metallurgy (P/M) technology is specified for longer-term performance and reliability. Good atmospheric and saline corrosion resistance, hot oxidation resistance and elevated temperature yield strength, at the most economical costs are key reasons for using 400 series stainless steel water atomized powders to make automotive components.
Typical automotive components requiring 400 series powders include rear-view mirror mounts, sensor rings, exhaust flanges, exhaust support brackets, and seals.
| APPARENT DENSITY (GM/CC) |
FLOW (SEC./50G) |
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) |
| 2.9 |
30 |
30
40
50 |
1500
1800
2200 |
6.00
6.45
6.60 |
6.33
6.60
6.75 |
85,000
105,000
120,000 |
-0.31
-0.28
-0.24 |
41,000
54,000
64,000 |
3.6
4.8
5.3 |
42.0
71.0
80.0 |