SS 321 is a Stainless Steel (SS) grade widely used in Indian engineering, fabrication, and manufacturing. SS321 is a titanium-stabilized austenitic stainless steel known for excellent resistance to intergranular corrosion and superior performance at elevated temperatures. Ideal for high-heat applications like exhaust systems, heat exchangers, and chemical processing. This page lists the chemical composition, mechanical properties, and international equivalents of SS 321, with live per-kg rates from verified MetaleMart sellers.
Chemical Composition (%)
| C | N | P | S | Cr | Mn | Ni | Si | Ti |
|---|---|---|---|---|---|---|---|---|
| 0.08 max | 0.10 max | 0.045 max | 0.030 max | 17.0-19.0 | 2.00 max | 9.0-12.0 | 1.00 max | 5xC min |
Mechanical Properties
| Property | Value |
|---|---|
| hardness | 217 HB max |
| elongation | 40% min |
| yield strength | 205 MPa min |
| tensile strength | 515 MPa min |
International Equivalents
| Standard Body | Country | Designation |
|---|---|---|
| ASTM/AISI | USA | AISI 321 |
| UNS | USA | S32100 |
| DIN/EN | Germany | 1.4541 / X6CrNiTi18-10 |
| JIS | Japan | SUS 321 |
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Frequently Asked Questions
What is SS 321?
SS321 is a titanium-stabilized austenitic stainless steel known for excellent resistance to intergranular corrosion and superior performance at elevated temperatures. Ideal for high-heat applications like exhaust systems, heat exchangers, and chemical processing.
What are the international equivalents of SS 321?
SS 321 is equivalent to AISI 321 (ASTM/AISI, USA), S32100 (UNS, USA), 1.4541 / X6CrNiTi18-10 (DIN/EN, Germany), SUS 321 (JIS, Japan).
Where can I buy SS 321 in India?
MetaleMart lists verified sellers of SS 321 Stainless Steel (SS) across India in multiple shapes — round bar, flat bar, sheet, pipe, and more. Live per-kg rates are visible without login.
What is the typical price of SS 321?
Prices for SS 321 vary by shape, size, quantity, and location. View live rates from verified Indian sellers on MetaleMart product pages.