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321 Stainless Steel Square Bar
₹ 240 Get Latest Price
Product Specifications
| Material | Stainless Steel |
| Usage/Application | Construction |
| Availability | In Stock |
| Brand | MMC |
| Length | 9 m |
| Shape | Square |
| Standard | ASTM A615 |
GST No - 27ALEPC8831A1ZJ | Member since 2026
GROUND FLOOR, SHOP NO.5, 91/95 GORA GANDHI BUILDING, KIKA STREET, GULALWADI, Mumbai, Maharashtra, 400004
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Product Details
Grades 321 and 347 are the basic austenitic 18/8 steel (Grade 304) stabilised by Titanium (321) or Niobium (347) additions. These grades are used because they are not sensitive to intergranular corrosion after heating within the carbide precipitation range of 425-850°C. Grade 321 is the grade of choice for applications in the temperature range of up to about 900°C, combining high strength, resistance to scaling and phase stability with resistance to subsequent aqueous corrosion.Grade 321H is a modification of 321 with a higher carbon content, to provide improved high temperature strength.A limitation with 321 is that titanium does not transfer well across a high temperature arc, so is not recommended as a welding consumable. In this case grade 347 is preferred - the niobium performs the same carbide stabilisation task but can be transferred across a welding arc. Grade 347 is therefore the standard consumable for welding 321. Grade 347 is only occasionally used as parent plate material.Like other austenitic grades, 321 and 347 have excellent forming and welding characteristics, are readily brake or roll formed and have outstanding welding characteristics. Post-weld annealing is not required. They also have excellent toughness, even down to cryogenic temperatures. Grade 321 does not polish well, so is not recommended for decorative applications.Grade 304L is more readily available in most product forms, and so is generally used in preference to 321 if the requirement is simply for resistance to intergranular corrosion after welding. However 304L has lower hot strength than 321 and so is not the best choice if the requirement is resistance to an operating environment over about 500°C. Composition 321GradeCMnSiP CrMoNiNOther321min.max-0.082.000.750.0450.03017.019.0-9.012.00.10Ti=5(C N)0.70321Hmin.max0.040.102.000.750.0450.03017.019.0-9.012.0-Ti=4(C N)0.70347min.max0.082.000.750.0450.03017.019.0-9.013.0-Nb=10(C N)1.0
GROUND FLOOR, SHOP NO.5, 91/95 GORA GANDHI BUILDING, KIKA STREET, GULALWADI, Mumbai, Maharashtra, 400004
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