SS 304 Stainless Steel
The most popular stainless steel — "18/8". Excellent corrosion resistance, easy to weld and form, non-magnetic in the annealed condition.
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What is SS 304?
SS 304 (UNS S30400, EN 1.4301) is an austenitic stainless steel containing 17.5–19.5% chromium and 8.0–10.5% nickel. The most popular stainless steel — "18/8". Excellent corrosion resistance, easy to weld and form, non-magnetic in the annealed condition. It has a density of 7.93 g/cm³ and a minimum tensile strength of 515 MPa, and is used mainly for kitchen and food equipment, dairy and brewery tanks and chemical containers.
- Type Austenitic (300 series)
- Equivalents UNS S30400 · EN 1.4301 · SUS 304
- Density 7.93 g/cm³
- Strength (min) 515 MPa tensile · 205 MPa yield
- Magnetic? Non-magnetic in the annealed condition
- Main uses Kitchen and food equipment, dairy and brewery tanks, chemical containers
What is the chemical composition of SS 304?
Typical ASTM A240 limits, % by weight (single values are maximums).
| C | Mn | Si | P | S | Cr | Ni | N |
|---|---|---|---|---|---|---|---|
| 0.07 max | 2.00 max | 0.75 max | 0.045 max | 0.030 max | 17.5 – 19.5 | 8.0 – 10.5 | 0.10 max |
What are the mechanical properties of SS 304?
| Tensile strength (min) | 515 MPa |
|---|---|
| Yield strength 0.2% (min) | 205 MPa |
| Elongation (min) | 40% |
| Hardness (max) | 92 HRB / 201 HB max |
| Density | 7.93 g/cm³ |
What is the equivalent of SS 304?
| ASTM / AISI | UNS | EN / W.Nr. | DIN | JIS |
|---|---|---|---|---|
| 304 | S30400 | 1.4301 | X5CrNi18-10 | SUS 304 |
Where is SS 304 used?
- Kitchen and food equipment
- Dairy and brewery tanks
- Chemical containers
- Architectural panels and railings
- Heat exchangers
- Fasteners and springs
Can SS 304 be welded?
Excellent. 304 welds by all common methods (TIG, MIG, arc) without preheat, normally with ER308L filler. For thick sections or heavily welded tanks, use 304L to avoid sensitisation at the weld.
Forming and machining
Very good formability — it deep-draws, bends and rolls easily. It work-hardens during machining, so use sharp tools, positive cutting angles and steady feeds; 303 machines more easily if corrosion needs allow.
SS 304 sizes we supply
We keep sheets from 0.5 to 6 mm (1250 × 2500 and 1500 × 3000 mm), plates up to 80 mm, coils and shims from 0.1 mm, round bars from 0.8 to 250 mm, and pipes from 1/8" to 24".
SS 304 price compared with 304
304 is the price benchmark for stainless steel. Grades with more nickel or molybdenum cost more; 202, 201 and 430 cost less. For today's rate, send us your size and quantity.
Our advice
Choose 304 for most indoor, food-contact and mildly corrosive service. For chlorides (sea water, salt, some chemicals) move to 316. For heavy welding of thick sections, 304L avoids sensitisation.
Values are typical ASTM A240 limits for flat products and are for guidance only. Always refer to the mill test certificate supplied with the material.
SS 304 — FAQs
What is the chemical composition of SS 304?
SS 304 contains up to 0.07% carbon, up to 2.00% manganese, up to 0.75% silicon, up to 0.045% phosphorus, up to 0.030% sulphur, 17.5–19.5% chromium, 8.0–10.5% nickel and up to 0.10% nitrogen, with the balance iron (typical ASTM A240 limits).
What is the equivalent of SS 304?
SS 304 is UNS S30400, EN 1.4301 (X5CrNi18-10) and SUS 304 in the Japanese standard.
What is the density of SS 304?
The density of SS 304 is about 7.93 g/cm³ (7930 kg/m³).
Where can I buy SS 304 in Vadodara?
Sagar Sales Corporation supplies SS 304 sheet, plate, coil, perforated sheet, round bar, pipe, tube, angle & flat, flanges, shims, slit coil in Vadodara with mill test certificates. Contact us for today's rate.
Get today's SS 304 rate
Tell us the grade, size, finish and quantity. We check stock and send a per-kg rate with dispatch date — usually the same working day.
- Rates direct from Vadodara stock
- Mill test certificate with every lot
- Cut-to-size and delivery all over India