SS 303 is a Stainless Steel (SS) grade widely used in Indian engineering, fabrication, and manufacturing. Stainless Steel 303 is a free-machining austenitic grade designed for excellent machinability, making it ideal for high-speed precision components. This page lists the chemical composition, mechanical properties, and international equivalents of SS 303, with live per-kg rates from verified MetaleMart sellers.
Chemical Composition (%)
| C | P | S | Cr | Mn | Ni | Si |
|---|---|---|---|---|---|---|
| 0.15 max | 0.20 max | 0.15 min | 17.0-19.0 | 2.00 max | 8.0-10.0 | 1.00 max |
Mechanical Properties
| Property | Value |
|---|---|
| hardness | 262 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 303 |
| UNS | USA | S30300 |
| DIN/EN | Germany | 1.4305 / X8CrNiS18-9 |
| JIS | Japan | SUS 303 |
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Frequently Asked Questions
What is SS 303?
Stainless Steel 303 is a free-machining austenitic grade designed for excellent machinability, making it ideal for high-speed precision components.
What are the international equivalents of SS 303?
SS 303 is equivalent to AISI 303 (ASTM/AISI, USA), S30300 (UNS, USA), 1.4305 / X8CrNiS18-9 (DIN/EN, Germany), SUS 303 (JIS, Japan).
Where can I buy SS 303 in India?
MetaleMart lists verified sellers of SS 303 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 303?
Prices for SS 303 vary by shape, size, quantity, and location. View live rates from verified Indian sellers on MetaleMart product pages.