Stainless Steel 436L 409L Chemical Composition and Comparative
Chemical composition | C | Si | Mn | P | S | Cr | Mo | N | Other |
|---|---|---|---|---|---|---|---|---|---|
| Stainless Steel 436L | ≤0.025 | ≤1.oo | ≤1.00 | ≤0.04 | ≤0.030 | 16.0-19.0 | 0.75-1.5 | ≤0.025 | Ti：8xC%-0.80 |
| Stainless Steel 409L | ≤0.30 | ≤1.oo | ≤1.oo | ≤0.04 | ≤0.030 | 10.5-11.75 | Ti：6xC%-0.75 |
Stainless Steel 436L 409L Chemical Composition and Comparative
Distinguishing | Mechanical properties | |||
| Ys (Mpa) | Ts (Mpa) | El (%) | Hv | |
436L Stainless Steel | ≥ 245 | ≥ 410 | ≥ 20 | ≤ 230 |
| 409L Stainless Steel | ≥175 | ≥360 | ≥25 | ≤175 |
Stainless Steel 409L contains only about 11% of Cr, the standard does not previously attribute to the 409L stainless steel, belongs to only one of heat-resistant steel, Cr content directly affects Its corrosion resistance. The Cr content of stainless steel 436L is as high as about 18% and the addition of the Mo element makes it extremely excellent in corrosion resistance. The extremely low C, N, and the addition of carbon stabilizing elements Ti and Mo make the stainless steel 436L excellent in weldability and high-temperature resistance.
Generally, the elongation of 436L stainless steel can reach 33%, and the hardness can be controlled to 150, which is very beneficial for the shrinking and flaring processing in the manufacture of exhaust pipes.
At present, stainless steel 436 has been used in the auto parts manufacturing industry. Although the price of stainless steel 436L is slightly higher than that of 409L, many downstream product customers believe that they not only compare the price of stainless steel but also pay more attention to the technical requirements and actual application.
A person in charge of purchasing in the auto parts industry said that the stainless steel grades they currently use are mainly 436L stainless steel, while those using 409L in the past have changed to Steel 436L. The person in charge said that the reason why they used 436L stainless steel mainly took into account the reduction of technical requirements and production processes. Compared with the 30J5 steel grade that has been discontinued now, it is mainly because the recognition of downstream customers determines the frequency of steel grade circulation in the market.