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E Steel Sdn. Bhd. is a stainless steel supplier of 303 stainless steel plates in Malaysia, supplying customers across Selangor, Kuala Lumpur, Johor, Penang, and Singapore.
We stock 303 plates across a range of thicknesses and offer precision bandsaw cutting to your exact size — no minimum order required.
Whether your drawing specifies SS303, SUS303, AISI 303, EN 1.4305, DIN 1.4305, UNS S30300, or X8CrNiS18-9 — they are all the same free-machining stainless steel grade. We supply them all, cut to your required dimensions.
Cutting a plate to a near-net rectangular blank and then machining significantly reduces material waste and machining time versus starting from round bar.
| Standard | Grade Designation |
|---|---|
| American (AISI / SAE) | AISI 303 / SS303 |
| Japanese (JIS) | SUS303 |
| European (EN) | EN 1.4305 |
| German (DIN) | DIN 1.4305 |
| European Chemical Symbol | X8CrNiS18-9 |
| American UNS | UNS S30300 |
| British (BS) | BS 303S31 |
| Variant with Copper | SUS303Cu / 303Cu |
| Parameter | Details |
|---|---|
| Thickness | Minimum thickness thk4mm Maximum thickness thk65mm |
| Origin Mill | Mainly Japan, Nippon Yakin Mil SUS303 JIS G4304 |
| Mill Test Certificate | Available (3.1 MTC per EN 10204) |
Need a size not listed? Call or WhatsApp us — we will source non-standard diameters through our global procurement network with short lead times.
| Element | 303 (S30300 / 1.4305) |
|---|---|
| Carbon (C) | ≤ 0.15% |
| Chromium (Cr) | 17.0 – 19.0% |
| Nickel (Ni) | 8.0 – 10.0% |
| Manganese (Mn) | ≤ 2.0% |
| Silicon (Si) | ≤ 1.0% |
| Phosphorus (P) | ≤ 0.20% |
| Sulphur (S) | 0.15% min (key addition for free machining) |
The sulphur content is what distinguishes 303 from all other 18-8 austenitic stainless steels. It dramatically improves chip breakage and tool life during machining.
| Property | 303 (Annealed) |
|---|---|
| Tensile Strength (min) | 515 MPa |
| Yield Strength 0.2% (min) | 205 MPa |
| Elongation (min) | 35% |
| Hardness (max) | 228 HBW / 96 HRB |
This is the most common question for engineers choosing between the two grades:
|
|
SS303 / SUS303 / 1.4305 |
SS304 / SUS304 / 1.4301 |
|---|---|---|
|
Machinability |
Excellent — sulphur addition gives clean chip break |
Good, but generates longer, stringy chips |
|
Corrosion resistance |
Good — slightly lower than 304 due to sulphur |
Better |
|
Weldability |
Poor — not recommended for welding |
Good |
|
Surface finish after machining |
Excellent — smooth, consistent |
Good |
|
Marine / aggressive environments |
Not recommended |
Acceptable for mild environments |
|
Typical use |
CNC machined components, shafts, fittings, fasteners |
Fabricated/welded structures, tanks, enclosures |
Be aware of these limitations before specifying 303:
❌ Not suitable for welding — the sulphur causes hot cracking in welds. Use 304L for welded structures.
❌ Not recommended for marine or highly corrosive environments — the sulphur lowers corrosion resistance compared to 304. Use 316 / 316L for such applications.
❌ Cannot be hardened by heat treatment — like all austenitic stainless steels, it can only be work hardened.
❌ Not ideal for mirror polish — the sulphide inclusions make a truly smooth decorative finish difficult. Use 304 or 316 for cosmetic applications.
✅ Specialist in Machining-Grade Stainless Steel
We understand that 303 plate customers are typically machinists and precision engineers.
We stock and cut specifically to support machining operations — clean cut faces.
✅ Ready Stock in Malaysia
Our warehouse in Klang, Selangor holds stock ready to cut and deliver according to your requirements.
✅ No Minimum Order Quantity (MOQ)
Order one piece or a full plate. We accommodate prototype quantities, small batch runs, and production volumes equally.
✅ Material Traceability
Every plate is supplied with a Mill Test Certificate (MTC) traceable to the original mill.
Our motto: Right Metals, Right Specifications to Right Industry.
E Steel is a global metal supply chain company supplying and sourcing special steel raw materials for engineering industries across the ASEAN region and beyond. We help our customers source steels that are difficult to source locally.
Our Sales & Supplier Network: Australia · Pakistan · Malaysia · Taiwan · China · Vietnam · Belgium · Japan · South Korea · Philippines · France · United Kingdom · Indonesia · Thailand · Hong Kong · Sweden · United States · Dubai · Finland · Brunei · Germany & more.
Inquiry - SS303 Stainless Steel Plate | Full Plate & Cut to Size
E STEEL SDN. BHD. - We specialized in a wide range of high-quality special steel products, focused on high-mix low-volume customer base with the most accurate specifications and quality assurance for our customers.
No 1 & 3, Lorong Sungai Puloh 7/KU6, Kawasan Perindustrian Sungai Puloh, 42100 Klang, Selangor, Malaysia.
© 2020-2026 E STEEL SDN. BHD. 201001006721 (891338-A)
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