SS 321 Cold-rolled PlateASTM A240 · ASTM A480 · Manufacturer, stockist & exporter, India
AISI 321 · UNS S32100
An SS 321 cold-rolled plate is thinner plate finished by cold rolling, made from SS 321 to ASTM A240. Cold-rolled plate has tighter thickness tolerance and a smoother surface than hot-rolled.
- ASTM A240
- ASTM A480
- EN 10204 3.1 / 3.2
- Export packing
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is an SS 321 Cold-rolled Plate?
- What it is
- Thinner plate finished by cold rolling
- Material
- ASTM A240
- Dimensions
- ASTM A480
- Grade
- SS 321 · UNS S32100
- Best at
- High-temperature service between 425 and 815 °C
SS 321 Cold-rolled Plate Specification
| Product | SS 321 Cold-rolled Plate |
|---|---|
| Material standard | ASTM A240 |
| Dimensional standard | ASTM A480 |
| Thickness | 4.76 mm (3/16") and up |
| Size | Mill plates or cut to drawing |
| Testing | PMI · dimensional · NDT and IGC on request |
| Documents | EN 10204 3.1 · 3.2 with third-party inspection |
When to Choose a Cold-rolled Plate
Cold-rolled plate has tighter thickness tolerance and a smoother surface than hot-rolled.
- Tighter tolerances
- Smoother surface
- Thinner gauges
SS 321 Cold-rolled Plate Chemical Composition
| Element | Weight % |
|---|---|
| Chromium | 17.0 – 19.0 |
| Nickel | 9.0 – 12.0 |
| Titanium | 5 × (C + N) min, 0.70 max |
| Carbon | 0.08 max |
| Manganese | 2.00 max |
| Silicon | 0.75 max |
| Nitrogen | 0.10 max |
| Phosphorus | 0.045 max |
SS 321 Cold-rolled Plate Mechanical Properties
| Annealed plate & sheet | Value |
|---|---|
| Tensile strength | 515 MPa · 75 ksi |
| Yield strength 0.2% | 205 MPa · 30 ksi |
| Elongation | 40% |
| Hardness | 217 HB max |
Full chemistry, properties and equivalents are on the SS 321 grade page.
SS 321 Cold-rolled Plates for export
FOB / CIF · Nhava Sheva (JNPT), MumbaiSS 321 Cold-rolled Plate — questions buyers ask
When is cold-rolled plate chosen?
Where surface finish and thickness tolerance matter more than cost.
Which standard covers SS 321 cold-rolled plates?
The material is ASTM A240; dimensions follow ASTM A480. Always state both on your purchase order, with the edition if your project specifies one.
What decides the price of a SS 321 cold-rolled plate?
The alloy price, the size and dimensions, quantity, and the testing and documents required. Send your list and we quote the same working day.
What documents do you supply?
EN 10204 3.1 mill certificates as standard, 3.2 with third-party inspection on request, plus dimensional and PMI reports.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026