Stainless steel weight calculator for every SS grade and shape.
Stainless steel weight (kg) = volume (cm³) × density ÷ 1,000. SS 304 is 7.93 g/cm³ and SS 316 is 7.98 g/cm³, about 1% more than mild steel. A 2 mm SS 304 sheet weighs 15.86 kg/m², and a 25 mm SS 304 round bar weighs 3.89 kg per metre. Pick the shape and grade below, or read the charts further down.
Material detailsDensity: 7.85 g/cm³
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Theoretical weight from nominal size and density. Actual weight varies within mill tolerances.
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Density of stainless steel grades
| Grade | g/cm³ | kg/m³ | Weight vs mild steel |
|---|---|---|---|
| SS 304 | 7.93 | 7,930 | 101.0% |
| SS 304L | 7.93 | 7,930 | 101.0% |
| SS 304H | 7.93 | 7,930 | 101.0% |
| SS 303 | 7.93 | 7,930 | 101.0% |
| SS 316 | 7.98 | 7,980 | 101.7% |
| SS 316L | 7.98 | 7,980 | 101.7% |
| SS 316Ti | 7.98 | 7,980 | 101.7% |
| SS 317L | 7.98 | 7,980 | 101.7% |
| SS 321 | 7.92 | 7,920 | 100.9% |
| SS 347 | 7.96 | 7,960 | 101.4% |
| SS 309S | 7.98 | 7,980 | 101.7% |
| SS 310S | 7.98 | 7,980 | 101.7% |
| SS 201 | 7.80 | 7,800 | 99.4% |
| SS 202 | 7.80 | 7,800 | 99.4% |
| SS 904L | 7.95 | 7,950 | 101.3% |
| 254 SMO | 8.00 | 8,000 | 101.9% |
| SS 409 | 7.70 | 7,700 | 98.1% |
| SS 430 | 7.70 | 7,700 | 98.1% |
| SS 410 | 7.75 | 7,750 | 98.7% |
| SS 416 | 7.75 | 7,750 | 98.7% |
| SS 420 | 7.74 | 7,740 | 98.6% |
| SS 431 | 7.70 | 7,700 | 98.1% |
| SS 440C | 7.65 | 7,650 | 97.5% |
| 17-4PH (SS 630) | 7.78 | 7,780 | 99.1% |
| Duplex 2205 | 7.82 | 7,820 | 99.6% |
| Super Duplex 2507 | 7.80 | 7,800 | 99.4% |
| SS 409M (IRSM 44) | 7.70 | 7,700 | 98.1% |
| SS 430F (free machining) | 7.70 | 7,700 | 98.1% |
| SS 204Cu | 7.80 | 7,800 | 99.4% |
| J4 (JSL proprietary) | 7.80 | 7,800 | 99.4% |
| JT (JSL proprietary) | 7.80 | 7,800 | 99.4% |
| JSLU DD / JSLU SD-M (JSL proprietary) | 7.80 | 7,800 | 99.4% |
| Super Duplex S32760 (F55) | 7.84 | 7,840 | 99.9% |
| SS 1.4003 / UNS S41003 (12% Cr ferritic) | 7.70 | 7,700 | 98.1% |
Stainless steel bar weight per metre
Round bar by diameter, hex bar by size across flats and square bar by side, in kg per metre.
| Size | SS 304 round | SS 316 round | SS 304 hex | SS 304 square |
|---|---|---|---|---|
| 6 mm | 0.224 | 0.226 | 0.247 | 0.285 |
| 8 mm | 0.399 | 0.401 | 0.440 | 0.508 |
| 10 mm | 0.623 | 0.627 | 0.687 | 0.793 |
| 12 mm | 0.897 | 0.903 | 0.989 | 1.142 |
| 16 mm | 1.594 | 1.604 | 1.758 | 2.030 |
| 20 mm | 2.491 | 2.507 | 2.747 | 3.172 |
| 25 mm | 3.893 | 3.917 | 4.292 | 4.956 |
| 32 mm | 6.378 | 6.418 | 7.032 | 8.120 |
| 40 mm | 9.965 | 10.028 | 10.988 | 12.688 |
| 50 mm | 15.571 | 15.669 | 17.169 | 19.825 |
| 63 mm | 24.720 | 24.876 | 27.257 | 31.474 |
| 75 mm | 35.034 | 35.255 | 38.630 | 44.606 |
| 100 mm | 62.282 | 62.675 | 68.676 | 79.300 |
Stainless steel sheet and plate weight
Weight per square metre, and per sheet for 8 × 4 ft (1,220 × 2,440 mm), 1,250 × 2,500 mm and 1,500 × 3,000 mm sizes in SS 304.
| Thickness | SS 304 kg/m² | SS 316 kg/m² | 8 × 4 ft sheet, kg | 1,250 × 2,500, kg | 1,500 × 3,000, kg |
|---|---|---|---|---|---|
| 0.5 mm | 3.97 | 3.99 | 11.8 | 12.4 | 17.8 |
| 0.8 mm | 6.34 | 6.38 | 18.9 | 19.8 | 28.5 |
| 1 mm | 7.93 | 7.98 | 23.6 | 24.8 | 35.7 |
| 1.2 mm | 9.52 | 9.58 | 28.3 | 29.7 | 42.8 |
| 1.5 mm | 11.90 | 11.97 | 35.4 | 37.2 | 53.5 |
| 2 mm | 15.86 | 15.96 | 47.2 | 49.6 | 71.4 |
| 2.5 mm | 19.83 | 19.95 | 59.0 | 62.0 | 89.2 |
| 3 mm | 23.79 | 23.94 | 70.8 | 74.3 | 107.1 |
| 4 mm | 31.72 | 31.92 | 94.4 | 99.1 | 142.7 |
| 5 mm | 39.65 | 39.90 | 118.0 | 123.9 | 178.4 |
| 6 mm | 47.58 | 47.88 | 141.6 | 148.7 | 214.1 |
| 8 mm | 63.44 | 63.84 | 188.8 | 198.3 | 285.5 |
| 10 mm | 79.30 | 79.80 | 236.1 | 247.8 | 356.9 |
| 12 mm | 95.16 | 95.76 | 283.3 | 297.4 | 428.2 |
| 16 mm | 126.88 | 127.68 | 377.7 | 396.5 | 571.0 |
| 20 mm | 158.60 | 159.60 | 472.1 | 495.6 | 713.7 |
| 25 mm | 198.25 | 199.50 | 590.2 | 619.5 | 892.1 |
Formulas: round bar D² × 0.006228 kg/m (SS 304), sheet thickness × 7.93 kg/m², pipe (OD − t) × t × 0.02491 kg/m. For pipe sizes by schedule see the SS pipe weight chart; for sheets by gauge, the SS sheet weight calculator.
Reference basis: Compiled by Steel Impex India. Check each table’s source, product form and delivery condition before use. Sources, calculation methods and corrections.
Frequently asked questions
What is the density of stainless steel?
SS 304 / 304L is 7.93 g/cm³, SS 316 / 316L 7.98, SS 321 7.92, SS 202 and 201 7.80, SS 410 7.75, SS 430 7.70 and duplex 2205 7.82 g/cm³. Multiply by 1,000 for kg/m³.
How do you calculate stainless steel sheet weight?
Weight (kg) = length (m) × width (m) × thickness (mm) × density. A 1.5 mm SS 304 sheet of 1,250 × 2,500 mm weighs 1.25 × 2.5 × 1.5 × 7.93 = 37.2 kg.
What is the weight of a 25 mm SS round bar per metre?
π/4 × 25² × 7.93 ÷ 1,000 = 3.89 kg/m for SS 304, and 3.92 kg/m for SS 316.
Is SS 316 heavier than SS 304?
Yes, slightly: 7.98 against 7.93 g/cm³, about 0.6% more, because of its molybdenum. SS 202 is about 1.6% lighter than SS 304.
What is the formula for SS pipe weight per metre?
(OD − t) × t × 0.02491 kg/m for SS 304, with the OD and wall t in mm. For SS 316 use 0.02507.
Can the same SS rate per kg be used for sheet, pipe and rod?
No universal rate applies. Product form, size, finish, manufacturing route, quantity and documents can change the rate. Compare like-for-like quotations and use the appropriate weight calculation for each form.