Stal S355ML EN 10025-4 Polish Steel Plate Supplier

 

 

Stal S355ML EN 10025-4 Polish Steel Plate Supplier

Gangsteel – China's Leading Mill-Direct Supplier & Exporter of Stal S355ML EN 10025-4 Polish Steel Plates

Gangsteel is a trusted global supplier of stal S355ML EN 10025-4 Polish steel plates, catering to the Polish market and European projects with premium quality and competitive pricing. As "stal" means "steel" in Polish, we understand the demand for reliable S355ML in Poland's thriving construction, offshore, and manufacturing sectors. We stock over 5,000 tons of S355ML plates, thickness 6–200 mm, width 1500–4200 mm, length up to 18 m, all TMCP processed for superior weldability and low-temperature toughness.

Our plates are produced by HBIS and Shougang mills with full European approvals (PED 2014/68/EU, CPR 305/2011), EN 10204-3.1/3.2 MTCs, and third-party inspections (DNV-GL, ABS, Lloyd's, BV, CCS, RINA, KR, TÜV, SGS). Z25/Z35 available ex-stock, 100% UT EN 10160 S2/E2 standard. Ideal for Polish offshore wind farms like Baltica 2 or Baltic Power, where –50 °C impact is critical.

Fast delivery to Poland (7-10 days to Gdansk or Gdynia) and Europe. Explore our en 10025 4 High Strength Structural Steel for related grades. Gangsteel bridges Chinese manufacturing with Polish engineering excellence.

 

What is Stal S355ML EN 10025-4 Polish Steel Plate?

Stal S355ML refers to the Polish designation for S355ML structural steel under EN 10025-4:2004 (2019 revision), a thermomechanically rolled (TMCP) weldable fine-grain plate optimized for high-strength, low-temperature applications. In Poland, "stal S355ML" is widely used in heavy industry, shipbuilding, and renewable energy, where its 355 MPa minimum yield strength and ≥27 J Charpy V-notch at –50 °C ensure safety in harsh Baltic winters.

The grade breakdown:

• S= structural steel for load-bearing
• 355= nominal yield 355 MPa (≤16 mm thick)
• M= thermomechanical rolling (TMCP process)
• L= low-temperature impact (–50 °C test)

TMCP involves hot rolling at 900-1100 °C with controlled cooling (20-40 °C/s), creating a fine ferrite-bainite microstructure without post-rolling heat treatment. This yields CEV ≤0.39 for preheat-free welding up to 80 mm, finer grains (ASTM 8-10) for ductility (≥22% elongation), and isotropy superior to normalized S355NL (EN 10025-3). In Poland, stal S355ML complies with PN-EN 10025-4 and Eurocode 3, mandatory for offshore like PGE's Baltic projects or Orlen's platforms.

Vs. S355J2 (EN 10025-2), S355ML offers 15-20% weight reduction via thinner sections, cutting costs in Gdansk shipyards. Z-testing (Z25/Z35 EN 10164) prevents lamellar tearing in welds. Gangsteel supplies stal S355ML with Polish-language MTCs on request. For designation insights, see S355ML Meaning EN 10025-4 Structural Steel Supplier.

 

Chemical Composition – Ladle Analysis and Product Analysis

Stal S355ML's chemistry ensures low CEV for Baltic weld shops.

Ladle Analysis (max % unless noted)

Element	C	Si	Mn	P	S	Nb	V	Al min	Ti	Cr	Ni	Mo	Cu	N	CEV max
S355ML	0.14	0.50	1.60	0.025	0.020	≤0.05	≤0.10	0.020	≤0.05	≤0.30	≤0.50	≤0.10	≤0.55	≤0.015	0.39

Product Analysis (deviations EN 10025-1 Table 4)

Element	C	Si	Mn	P	S	Nb	V	Al total	Ti	Cr	Ni	Mo	Cu	N
Deviation	+0.02	+0.05	+0.10	+0.005	+0.005	+0.01	+0.02	+0.030	+0.03	+0.05	+0.05	+0.03	+0.03	+0.003

Actual: C 0.09-0.13%, CEV 0.32-0.38. Nb/V refine for Polish cold fab. Full: S355ML Chemical Composition EN 10025-4 Supplier.

 

Mechanical Properties – Full Thickness Range up to 200 mm (Transverse)

Thickness (mm)	ReH min (MPa)	Rm (MPa)	A5 min (%)	KV min (J, long. –50 °C)
≤16	355	470–630	22	27
16<t≤40	345	470–630	22	27
40<t≤63	335	470–630	22	27
63<t≤80	325	470–630	22	27
80<t≤100	315	470–630	22	27
100<t≤120	305	450–610	22	27
120<t≤150	295	450–610	22	27
150<t≤200	285–295*	450–610	22	27

*Agreement for >150 mm; Gangsteel 295 MPa to 180 mm. Hardness 140-180 HBW; density 7.85 g/cm³. Curves: S355ML Mechanical Properties EN 10025-4 Plate Supplier.

 

Comparison Within the Standard

S355ML in EN 10025-4 vs. family.

Property/Grade	S275M/ML	S355M	S355ML	S420M/ML
Yield (MPa, ≤16 mm)	275	355	355	420
Impact Temp (Long.)	-20°C (M)/-50°C (ML)	-20°C	-50°C	-20°C (M)/-50°C (ML)
Min KV (J)	40/-20°C; 27/-50°C	40	27	40/-20°C; 27/-50°C
CEV Max	0.38	0.39	0.39	0.43
Elong. A5 Min (%)	24	22	22	19
Tensile (MPa)	370-530	470-630	470-630	520-680
No-Preheat (mm)	100	80	80	60
Wt Save vs S355J2	5-10%	15-20%	15-20%	20-25%
Cost + vs S355J2 (USD/t)	+40-60	+80-120	+100-150	+150-200
Apps	Light frames	Bridges	Polish offshore	Cranes
Gangsteel Stock	High	V. High	Highest	Med

S355ML > S355M for Baltic cold; vs S275ML, 30% stronger thinner; vs S420ML, ductility/weld. 60% share. See S355M vs S355ML EN 10025-4 Steel Plate Comparison Supplier.

 

Equivalent International Grades

For Polish/EU projects.

Standard	Grade Equiv	Notes	Scenario
ASTM	A572 Gr.50 + Z35	Yield; -50°C add	Polish bridges
JIS	SM490AW	-40°C KV	Japanese-Polish JV
GB/T	Q355E	Low-temp	China-Polish exports
API 2W	Gr.50	S355ML LT	Baltic offshore
EN 10025-6	S355QL	Strength; S355ML cheaper	Field vs shop

Indicative. Full: S355ML Equivalent Material EN 10025-4 Plate Supplier.

 

Applications & Design Considerations for Stal S355ML

S355ML for Polish cold/wind: Eurocode 3, 18% less steel.

• Baltic Offshore: Monopiles, –50°C KV vs snaps; fatigue 10^8 cycles 140 MPa DNV-RP-C203.
• Polish Bridges: Girders, Z35 tears; HIC Class 1.
• Shipyards: Crane booms, A5 3% drifts EN 1998-1; C4M <0.08 mm/yr epoxy.
• Cold Fab: Bent ducts, 3t radius; 55 yr ICCP.

Notes: Interpass 150°C; ER50-2. FEA 2% hardening. Eco: 97% recycle, 20% CO2 save. Gangsteel V-50°, UT S4 for Gdansk yards.

 

Why Choose Gangsteel for Stal S355ML

• 5,000+ t stock.
• Mill-direct 70-120 USD/t save; >700 MT tiers.
• Process: laser ±0.4 mm, X-bevel, 140 mm bore, 500 mm roll, C5I 180 µm.
• Cert: ISO 9001/14001, NACE sour, EN 1090 EXC4.
• Legacy: PGE Baltic Power 800+ t, Orlen platforms—OTIF 100%.

To Poland: Gdansk 7 days.

 

FAQ

Q1: Stal S355ML vs S355M?

A: Impact: S355ML –50 °C ≥27 J for Baltic cold; S355M –20 °C ≥40 J. Rest same.

Q2: Welding preheat?

A: No to 80 mm (CEV 0.32-0.38); 80-120 °C thicker. E7018 H4.

Q3: Z35?

A: Stock (≥35% RA EN 10164 Cl.3); Norsok for Polish offshore.

Q4: Density/hardness?

A: 7.85 g/cm³, 140-180 HBW.

Q5: NDT?

A: UT S2/E2 std; S3/E3 opt.

Q6: ASTM equiv?

A: A572 Gr.50 + Z35; -50 °C add for Polish-EU.

Q7: Lead time to Poland?

A: Stock 3-5 days Gdansk; processed 5-8 days.

 

Contact Gangsteel

For stal S355ML to Poland, quote now.

Email: admin@gangsteel.com WhatsApp/WeChat/Mobile: +86 135 9887 9167 Website: https://gangsteel.net/

Gangsteel—Polish Steel Partnership. Stock for Baltic success.

 

 

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