SS 321H is a Stainless Steel (SS) grade widely used in Indian engineering, fabrication, and manufacturing. High-carbon version of 321 with titanium stabilization. Designed for high-temperature service up to 900°C with improved creep strength. This page lists the chemical composition, mechanical properties, and international equivalents of SS 321H, with live per-kg rates from verified MetaleMart sellers.
Chemical Composition (%)
| C | Cr | Mn | Ni | Si | Ti |
|---|---|---|---|---|---|
| 0.04-0.10 | 17.00-19.00 | 2.00 max | 9.00-12.00 | 0.75 max | 5x(C+N) min, 0.70 max |
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 |
|---|---|---|
| UNS | USA | S32109 |
| EN | Europe | 1.4878 |
| JIS | Japan | SUS321H |
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Frequently Asked Questions
What is SS 321H?
High-carbon version of 321 with titanium stabilization. Designed for high-temperature service up to 900°C with improved creep strength.
What are the international equivalents of SS 321H?
SS 321H is equivalent to S32109 (UNS, USA), 1.4878 (EN, Europe), SUS321H (JIS, Japan).
Where can I buy SS 321H in India?
MetaleMart lists verified sellers of SS 321H 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 321H?
Prices for SS 321H vary by shape, size, quantity, and location. View live rates from verified Indian sellers on MetaleMart product pages.