Corrosion Resistance
321 stainless steel (1.4541) has excellent corrosion resistance at normal temperatures but is primarily designed to perform at elevated temperatures. The added titanium content of minimum five times the carbon % content (max 0.7%) means that grade 321 also possesses good creep strength, good resistance to chromium carbide precipitation and is very resistant to oxidation and intergranular corrosion up to 850ºC in dry air service conditions. Other corrosive compounds in the hot atmosphere such as water and sulphur compounds will significantly reduce the maximum service temperature. The overall characteristics of this material make it an excellent, relatively low cost choice for many applications.
Typical Analysis
| 321 | Cr% | Ni% | Mo% | Ti% | C% | Cu% | Mn% | Si% | N% |
| MIN | 17.0 | 9.0 | - | (5xC+N) | - | - | - | 0.25 | - |
| MAX | 19.0 | 12.0 | 0.75 | 0.7 | 0.08 | 0.75 | 2.0 | 1.0 | 0.1 |
Welded 3 Inch Stainless Steel Tubing Mechanical Properties
Properties quoted below are guideline figures only and should not be used for any design purposes.
| - | 0.2% Proof (Nmm²) | UTS (Nmm²) | Elongation (%) |
| 321 (1.4541) | 200 - 300 | 500 - 700 | 40 |
Related Specs & Trade Names
1.4541, Grade 321, Alloy 321, AISI 321, TYPE 321, UNS S32100, X6CrNiTi18-10, ASTM A240, 321H, 321 Stainless, T.321, SS321, 321SS, 321
Welded 3 Inch Stainless Steel Tubing Inspection & Test |
1. 100% PMI, Spectro Chemical Analysis Test for Raw Material |
2. 100% Dimension & Visual Examination |
3. Mechanical Properties Test Include Tension Test, Flattening Test,Flange Test, Hardness Test ,Reversed Flattening Test |
4. 100% Hydrostatic Test or 100% NON-DESTRUCTIVE Test (ET or UT) |
5. Radiographic Test for Welded Pipe (shall be accordance with specification,or shall be as agreed upon between the purchaser and vendor) |
6. Straightness Test (optional) |
7. Roughness Test (optional) |
8. Intergranular Corrosion Test(optional) |
9. Impact Test (optional) |
10. Grain Size Determinations (optional) |
NOTES : ALL THE TESTS AND INSPECTION RESULT NEED TO BE SHOWED IN REPORTS ACCORDING TO STANDARD AND SPECIFICATION. |
