Stainless Steel 321 / 1.4541 / UNS S32100 Round Bars
Stainless Steel 321H / 1.4878 / UNS S32109 Round Bars
SS321 / SS321H grade is a really common grade which preferred for heat resistant applications. This grade is written as 1.4541 or X6CrNiTi18-10 according to EN norm and it is written as UNS S32100 according to UNS norm. 1.4541 stainless steel is similar to mix of 304 and 316Ti grades and we can think 321 grade as the mixture of these two different grades. This grade has a good corrosion resistance and at temperatures like 600-700 degree, this grade has still a good heat and corrosion resistance. 321 stainless is widely used in Germany and Russia. If this grade is not enough because of its heat resistance, then 310 / 310s grades can be choosen for higher temperatures. The ingridient of 321 grade is similar to 304 stainless steel grade so 321 grade can be considered as the titanium added version of 304 grade.
In New Arise Metal you can find 321 / 321H grade stainless steel in round bar shape in Bright & Black form with 3.1 MTC from reputed Brands. We also provide Cutting size as per client's / customer's requirements.
Stainless Steel 321H is the higher-carbon modification of stainless steel 321. In addition, 321H is stabilized by an addition of niobium to resist intergranular corrosion. It is also able to withstand higher temperatures than type 321, due to its elevated carbon levels. While 321H displays the same welding and forming characteristics of type 321, the metal cannot be hardened by heat treatment. It is utilized in situations where type 321 cannot withstand the high temperatures, typically those exceeding 1000° F. Type 321H displays better resistance against creep than both 321 and 304 stainless steels.
321H also shows resistance against acid corrosion in a variety of environments. Lower temperatures provide better resistance, but the metal is able to withstand up to a 10% acid solution, that has been diluted, at elevated temperatures. However, the metal shows very little resistance against chlorine or sulfuric solutions at any given temperature.
Given their similar composition and characteristics, it is possible for stainless steels 321 and 321H to become dually certified.
Chemical Composition of SS 321 Stainless Steel Round Bars :
Chemical Composition of SS 321H Stainless Steel Round Bars :
| ELEMENT | 321 | 321H |
| NI | 9.0 – 12.0 | 9.0 – 12.0 |
| C | 0.08 max | 0.04 – 0.10 |
| MN | 2.0 max | 2.0 max |
| P | 0.045 max | 0.045 max |
| S | 0.030 max | 0.030 max |
| SI | 1.0 max | 1.0 max |
| CR | 17.0 – 19.0 | 17.0 – 19.0 |
| TI | 5(C+N) – 0.70 max | 4(C+N) – 0.70 |
| N | 0.10 max | 0.10 max |