S355J0WP Plate Supplier

EN 10025-5 S355J0WP (S355JOWP) High-Phosphorus Weathering Steel Plates & Sheets

Dinesh Tube India supplies S355J0WP plates and sheets (often written S355JOWP) from Mumbai to cladding and facade contractors, container and wagon builders, chimney and duct fabricators, and signage makers. S355J0WP, material number 1.8945, is the high-phosphorus weathering steel grade of EN 10025-5. It is the European equivalent of Corten A / ASTM A242. We supply it as sheets, plates and cut sizes with EN 10204 3.1 certificates.

The grade is meant for thinner flat products. For thick plate or heavily welded structures, choose S355J2W (Corten B type). For all Corten grades, see our Corten steel plates page.

Table of Contents

What Is S355J0WP?
Equivalent Grades
Specification
Chemical Composition
Mechanical Properties
J0WP vs J2WP vs J2W
Applications
FAQs

What Is S355J0WP?

The grade name tells you what it is:

S355: structural steel, minimum yield 355 MPa (thickness up to 16 mm)
J0: Charpy impact energy of at least 27 J at 0 °C
W: weathering steel
P: high phosphorus (0.06–0.15%)

The middle character is a zero. "S355JOWP" with the letter O is a common spelling of the same grade. Phosphorus, together with copper and chromium, helps form a dense protective patina quickly, so S355J0WP is popular for architecture. The same phosphorus limits weldability in thick sections, which is why EN 10025-5 restricts the WP grades to thinner products. S355J0WP is not stainless steel and is not intended for marine immersion, chemical service or surfaces that stay wet.

EN 10025-5 S355J0WP weathering steel plates

S355J0WP Equivalent Grades

Standard	Grade	Note
EN 10025-5 (current)	S355J0WP / 1.8945	Current designation
EN 10155 (withdrawn)	S355J0WP	Same name
NF A35-502 (old French)	E36WA3	Historic
UNI (old Italian)	Fe510C1K1	Historic
BS 4360 (withdrawn)	WR50A	Historic
ASTM	A242	Closest US equivalent (Corten A)
JIS G3125	SPA-H	Closest Japanese equivalent

Equivalents are close, not identical. Order to the standard on your drawing.

C	Si	Mn	P	S	N	Cr	Cu	Ni
0.12 max	0.75 max	1.00 max	0.06–0.15	0.035 max	0.009 max	0.30–1.25	0.25–0.55	0.65 max

0.12 max

0.75 max

1.00 max

0.06–0.15

0.035 max

0.009 max

0.30–1.25

0.25–0.55

0.65 max

Thickness (mm)	Min Yield ReH (MPa)	Tensile Rm (MPa)
Below 3	355	510 – 680
3 to 16	355	470 – 630
Over 16 to 40	345	470 – 630

Thickness (mm)

Min Yield ReH (MPa)

Tensile Rm (MPa)

Below 3

355

510 – 680

3 to 16

355

470 – 630

Over 16 to 40

345

470 – 630

S355J0WP vs S355J2WP vs S355J2W

Grade	Number	Phosphorus	Impact Test	Best For
S355J0WP	1.8945	0.06–0.15%	27 J at 0 °C	Thin sheet and plate, architecture
S355J2WP	1.8946	0.06–0.15%	27 J at −20 °C	Thin sheet and plate, colder service
S355J0W	1.8959	0.035% max	27 J at 0 °C	General weathering structures
S355J2W	1.8965	0.030% max	27 J at −20 °C	Bridges, thick welded structures

Need S355J0WP plates or sheets? Send thickness, plate size or cut sizes, quantity and delivery location to kamlesh@dineshtube-india.com or call +91 83559 10913. You can also send an enquiry.

S355J0WP Plate Applications

Facades, cladding panels and roofing
Shipping containers and truck bodies
Railway wagon panels and roofs
Chimneys, stacks and flue ducts
Noise barriers and retaining walls
Planters, landscape edging and sculptures
Corten signage and name boards

Architectural and transport uses of S355J0WP weathering steel

S355J0WP Plates: FAQs

What is S355J0WP steel?

S355J0WP (1.8945) is a high-phosphorus weathering structural steel to EN 10025-5. It has a minimum yield strength of 355 MPa up to 16 mm, Charpy impact energy of at least 27 J at 0 °C, and phosphorus, copper and chromium additions that form a protective patina outdoors.

Is S355JOWP the same as S355J0WP?

Yes. The correct designation uses a zero (J0, meaning 27 J impact at 0 °C), but it is often written with the letter O as S355JOWP. Both refer to the same EN 10025-5 grade, material number 1.8945.

Is S355J0WP the same as Corten A?

It is the European grade closest to Corten A and to ASTM A242. All three are high-phosphorus copper-chromium-nickel weathering steels best suited to thinner plate and sheet. The Corten B type in EN 10025-5 is S355J2W.

What is the difference between S355J0WP and S355J2W?

S355J0WP has high phosphorus (0.06–0.15%), 27 J impact at 0 °C and is limited to thinner products. S355J2W has low phosphorus, 27 J impact at −20 °C and is available in much thicker plate, so it is preferred for bridges and heavily welded structures.

What is the difference between S355J0WP and S355J2WP?

They have the same strength and weathering chemistry. S355J0WP is impact tested at 0 °C and S355J2WP at −20 °C, and S355J2WP has a slightly tighter sulphur limit.

What is the maximum thickness of S355J0WP plate?

EN 10025-5 limits the high-phosphorus WP grades to thinner products, and plates are commonly supplied up to about 40 mm. For thicker plate, choose S355J2W or S355K2W.

Can S355J0WP be welded?

Yes, in thin sections with normal structural practice. The higher phosphorus makes it less suitable for thick, heavily restrained welds. Where the weld must weather like the plate, use consumables with matching weathering chemistry.

Which certificates come with S355J0WP plates?

Every supply comes with an EN 10204 3.1 mill test certificate showing heat number, chemical analysis, tensile and Charpy impact results to EN 10025-5. EN 10204 3.2 certificates and third-party inspection can be arranged on request.

EN 10025-5 S355J0WP (S355JOWP) High-Phosphorus Weathering Steel Plates & Sheets

What Is S355J0WP?

S355J0WP Equivalent Grades

S355J0WP Plate Specification

S355J0WP Chemical Composition (Ladle Analysis, %)

S355J0WP Mechanical Properties

S355J0WP vs S355J2WP vs S355J2W

Types of S355J0WP Products

S355J0WP Plates

S355J0WP Sheets