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Rajgranth Metal & AlloysRAJGRANTH
Grade and product

Stainless Steel 304L Sheet: manufacturer, stockist and exporter in Mumbai, India

Rajgranth Metal & Alloys supplies stainless steel 304l sheet (UNS S30403) from Mumbai and exports it to 18 markets.

01overview

What is SS 304L sheet?

Sheet is the thinner flat product, supplied cut to size in a stated surface finish, and heavier gauges are sold as plate to the same standard and range. SS 304L sheet and plate are used for fabricated panels, equipment housings, tank shells and process equipment, where the finish and flatness matter as much as the grade. SS 304L (UNS S30403, EN 1.4307) is the low-carbon version of 304, with 0.030 percent carbon at most. The lower carbon keeps chromium carbides from forming at the grain boundaries when thick sections are welded, so it keeps its corrosion resistance in the as-welded condition without a post-weld anneal.

Rajgranth Metal & Alloys lists SS 304L among the grades it supplies and exports from Mumbai.

02designations

SS 304L designations and equivalents

SS 304L designations4 rows
StandardDesignation
UNSS30403
EN / Werkstoff1.4307
AISI304L
JISSUS 304L

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03composition

SS 304L chemical composition

Limits are those of the standard named in the table caption. Product-specific standards for pipe, tube and bar carry their own limits, so always confirm the composition on the mill test certificate supplied with the material.

SS 304L chemical composition, UNS S30403 (ASTM A240), % by weight1 rows
ElementCarbonManganeseSiliconPhosphorusSulphurChromiumNickelNitrogen
Limit0.030 max2.00 max0.75 max0.045 max0.030 max17.50 – 19.508.00 – 12.000.10 max

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04mechanical

SS 304L mechanical properties

SS 304L mechanical properties, annealed (ASTM A240)4 rows
PropertyRequirement
Tensile strength485 MPa minimum
Yield strength (0.2% offset)170 MPa minimum
Elongation in 50 mm40% minimum
Hardness92 HRB maximum (201 HBW)

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05sizes

SS 304L sheet: sizes and finishes

The published size range, finishes and conditions for sheet are set out on the sheet & plate pages, which list every dimension we publish. Sizes outside the range can be produced to order; send the dimensions with your enquiry.

Published size range, sheet (RGM specification)4 rows
ParameterRange
Thickness0.3 mm, 100 mm
Width1000 mm, 1219 mm, 1500 mm, 2000 mm
Length2000 mm, 2438 mm, 3000 mm, 6000 mm
FormSheet, Plate, Coil, Circle, Flat

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06standards

Standards for SS 304L sheet

SS 304L sheet is commonly specified to ASTM A240 / ASME SA-240 and ASTM A480. Commonly specified product standards. Confirm the standard, edition and any supplementary requirements on your order; we supply to the standard you name.

07why

Why buyers choose SS 304L sheet

Resists intergranular corrosion after welding

Same formability and general corrosion resistance as 304

Suits welded tanks, pipe and vessels

08applications

Where SS 304L sheet is used

  • Welded pipe and tube for process lines
  • Tanks and vessels in food and chemical plants
  • Heat-exchanger shells
  • Pharmaceutical equipment in mild service
  • Thick-section welded fabrication
09specify

What to state when you enquire for SS 304L sheet

  • Thickness in mm and sheet size, with width of 1000, 1219, 1500 or 2000 mm published
  • Surface finish: 2B, BA, No. 4, hairline, mirror, matt or chequered
  • Protective film on one side or both, for polished finishes
  • Quantity in sheets or kilograms
  • The standard and the test certificate required
  • Whether sheets are to be cut to size
10check

What to check on SS 304L sheet before and after delivery

On SS 304L sheet, look at flatness and surface in good light and at an angle, because finish defects on polished sheet show only that way. Check thickness against the order, and the heat number against the certificate. If the sheet will be formed or welded, tell us the process so we can say whether the grade and temper suit it. Grade limits to design around: slightly lower strength than 304 and shares 304's weakness in chloride environments.

11export

Export of SS 304L sheet from India

SS 304L sheet is exported from Mumbai to 18 confirmed markets, quoted with the Incoterm and named port.

12alternatives

SS 304L compared with similar grades

Buyers who look at SS 304L sheet usually also compare SS 304 and SS 316L. The grade pages below give each one's designations, properties and limits side by side so you can choose for the service rather than the price alone.

FAQ

09

Questions answered

What is the difference between 304 and 304L?
Carbon. 304L holds it to 0.030 percent against 0.07 percent in 304, which protects welds from sensitisation. Strength is slightly lower, and many mills supply dual-certified 304/304L.
Is 304L stronger than 304?
No. Its minimum yield strength to ASTM A240 is 170 MPa against 205 MPa for 304.
When must I use 304L instead of 304?
When thick sections will be welded and not annealed afterwards, or when the service can attack sensitised grain boundaries.
What finishes can SS 304L sheet be supplied in?
The published finishes are No. 1, 2B, 2D, BA, No. 4, hairline, mirror (No. 8), matt and chequered. For polished finishes, ask for protective film.
Which standard applies to SS 304L sheet?
SS 304L sheet is commonly specified to ASTM A240 / ASME SA-240 and ASTM A480. Confirm the standard and edition on your order.
What is the minimum yield and tensile strength of SS 304L?
In the annealed condition, SS 304L has a minimum yield strength of 170 MPa and a minimum tensile strength of 485 MPa, per the standard named in the table above.
What is the UNS number and EN designation of SS 304L?
Stainless Steel 304L is designated UNS S30403, EN 1.4307, AISI 304L and JIS SUS 304L.
What are the main alloying elements in SS 304L?
To the standard in the composition table, SS 304L carries chromium 17.50 – 19.50 and nickel 8.00 – 12.00 percent by weight. Confirm the composition on the mill test certificate supplied with your material.
Do you supply a mill test certificate with SS 304L sheet?
Yes, to EN 10204 3.1 as standard, showing chemistry and mechanical properties against the heat. EN 10204 3.2 with third-party inspection is available on request.
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