Product List
Gangsteel Material Solution
Email: admin@gangsteel.com
Sales: jack@gangsteel.com
Gangsteel – China's Leading Mill-Direct Supplier & Exporter of S355ML Chemical Composition EN 10025-4 Steel Plates
Gangsteel is your go-to supplier for S355ML chemical composition EN 10025-4 steel plates, backed by our extensive 15,000+ ton inventory and expertise in high-strength structural materials. As a thermomechanically rolled (TMCP) fine-grain steel under EN 10025-4:2004 (2019 revision), S355ML delivers 355 MPa minimum yield strength, exceptional weldability (CEV ≤0.39), and reliable –50 °C impact toughness (≥27 J longitudinal). Available in thicknesses 6–200 mm, widths 1500–4200 mm, and lengths up to 18 meters, our plates are produced by premium mills like HBIS and Shougang with full PED 2014/68/EU and CPR 305/2011 certification. Every order includes detailed EN 10204-3.1/3.2 mill test certificates verifying the chemical composition, along with third-party inspections from DNV-GL, ABS, Lloyd's Register, Bureau Veritas, CCS, RINA, KR, TÜV, or SGS.
Understanding the chemical composition of S355ML is crucial for engineers ensuring compliance in demanding applications like offshore wind foundations, Arctic pipelines, or seismic bridges. At Gangsteel, we provide precise ladle and product analysis data to support your quality control, with Z25/Z35 through-thickness options and 100% UT EN 10160 S2/E2 standard. Fast global delivery (3–7 days) and processing services (cutting, beveling, drilling, rolling, priming) make us the efficient choice. Browse our complete en 10025 4 High Strength Structural Steel portfolio for complementary grades.
The chemical composition of S355ML under EN 10025-4:2004 (with 2019 amendments) is meticulously engineered to balance high strength, fine-grain refinement, and superior weldability, making it a cornerstone for low-temperature structural applications. S355ML is a thermomechanically rolled (TMCP) weldable fine-grain steel, where the "S" denotes structural use, "355" indicates nominal yield strength of 355 MPa (≤16 mm thick), "M" signifies TMCP delivery, and "L" ensures enhanced Charpy V-notch impact of ≥27 J at –50 °C longitudinally.
TMCP processing—hot rolling at 900-1100 °C followed by accelerated cooling (20-40 °C/s)—relies on the alloy design to achieve a uniform ferrite-bainite microstructure without post-rolling heat treatment. The composition emphasizes low carbon (C ≤0.14%) for reduced hardenability during welding, controlled manganese (Mn ≤1.60%) for solid solution strengthening, and microalloying with niobium (Nb ≤0.05%), vanadium (V ≤0.10%), and titanium (Ti ≤0.05%) to pin austenite grains during recrystallization, resulting in ASTM sizes 8-10 for enhanced toughness and ductility (≥22% elongation).
The carbon equivalent (CEV ≤0.39) is a standout feature, calculated as C + Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15, enabling preheat-free welding up to 80 mm thick and minimizing hydrogen-induced cracking in the heat-affected zone (HAZ). Aluminum (Al ≥0.020%) acts as a deoxidizer and grain refiner, while tight limits on phosphorus (P ≤0.025%) and sulfur (S ≤0.020%) prevent brittleness in cold service. Compared to S355J2 (EN 10025-2, CEV up to 0.47), S355ML's tighter controls reduce preheat needs by 50-100 °C, cutting fabrication costs by 10-15%.
In practice, the ladle analysis (from the melt) sets maximums, while product analysis (from the finished plate) allows minor deviations per EN 10025-1 Table 4, ensuring real-world consistency. Gangsteel verifies every heat with spectrographic analysis, providing values typically 10-20% below max (e.g., C 0.09-0.12%, CEV 0.32-0.38%). This precision supports applications under Eurocode 3 (EN 1993-1-1) for fatigue-critical elements or DNV-OS-B101 for offshore, where compositional traceability prevents failures. For a designation overview, refer to S355ML Meaning EN 10025-4 Structural Steel Supplier.
The table below combines ladle maximums with product deviations, highlighting Gangsteel's typical actual values for transparency.
|
Element |
Ladle Max (%) |
Product Deviation (%) |
Typical Actual (%) – Gangsteel Stock |
Role in S355ML Performance |
|---|---|---|---|---|
|
C |
0.14 |
+0.02 |
0.09–0.12 |
Low for weldability; base strength |
|
Si |
0.50 |
+0.05 |
0.20–0.40 |
Deoxidizer; minor strength boost |
|
Mn |
1.60 |
+0.10 |
1.20–1.50 |
Solid solution strengthening |
|
P |
0.025 |
+0.005 |
≤0.018 |
Controlled for brittleness resistance |
|
S |
0.020 |
+0.005 |
≤0.015 |
Low inclusions for toughness |
|
Nb |
0.05 |
+0.01 |
0.02–0.04 |
Grain refiner via carbides |
|
V |
0.10 |
+0.02 |
0.04–0.08 |
Precipitation hardening |
|
Al min |
0.020 |
+0.030 (total) |
0.025–0.045 |
Deoxidizer & grain stabilizer |
|
Ti |
0.05 |
+0.03 |
0.01–0.03 |
Nitride former for pinning |
|
Cr |
0.30 |
+0.05 |
0.10–0.25 |
Hardenability enhancer |
|
Ni |
0.50 |
+0.05 |
0.20–0.40 |
Low-temp toughness improver |
|
Mo |
0.10 |
+0.03 |
≤0.05 |
Minor alloy for strength |
|
Cu |
0.55 |
+0.03 |
0.20–0.35 |
Deoxidizer; corrosion aid |
|
N |
0.015 |
+0.003 |
≤0.012 |
Controlled for nitride formation |
|
CEV max |
0.39 |
N/A |
0.32–0.38 |
Weldability index (key metric) |
CEV formula: C + Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15. Deviations ensure plate-to-plate consistency. Equivalents like Q355E (GB) match within ±0.02%. Detailed verification: S355ML Chemical Composition EN 10025-4 Supplier.
|
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 |
*Mill-specific >150 mm; Gangsteel 295 MPa to 180 mm. Hardness 140-180 HBW; density 7.85 g/cm³. Full data: S355ML Mechanical Properties EN 10025-4 Plate Supplier.
S355ML vs. EN 10025-4 peers.
|
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 |
Offshore |
Cranes |
|
Gangsteel Stock |
High |
V. High |
Highest |
Med |
S355ML > S355M for cold; vs S275ML, 30% stronger; vs S420ML, ductility. See S355M vs S355ML EN 10025-4 Steel Plate Comparison Supplier.
S355ML equivalents for cross-standard use.
|
Standard |
Equivalent Grade |
Key Match Notes |
Typical Use Case |
|---|---|---|---|
|
ASTM/ASME |
A572 Gr.50 + Z35 |
Yield 345 MPa; –50 °C KV add |
U.S. cold structures |
|
JIS G 3106 |
SM490A |
Rm 490 MPa; –40 °C KV |
Japanese offshore |
|
GB/T 1591 |
Q355E |
Low-temp exact |
China-EU pipelines |
|
API 2W |
Grade 50 |
Offshore weldable |
Gulf/Baltic platforms |
|
EN 10025-6 |
S355QL |
QT alt; S355ML cheaper |
Heavy fabrication |
Indicative; TMCP S355ML HAZ superior. Dual-cert. Full: S355ML Equivalent Material EN 10025-4 Plate Supplier.
S355ML for low-temp high-strength: Eurocode 3, 18% less material.
Notes: Interpass 150°C; ER50-2. FEA 2% hardening. Eco: 97% recycle, 20% CO2 save. Gangsteel V-50°, UT S4.
To 92+ countries: Rotterdam 7 days.
Q1: S355ML vs S355M difference?
A: Impact only: S355ML ≥27J –50 °C for cold (offshore/Arctic); S355M ≥40J –20 °C for temperate. Yield/chem/weld same—ML for < –20 °C (DNV-OS-B101). Gangsteel stocks both with MTCs.
Q2: Welding preheat for S355ML?
A: None to 80 mm (CEV 0.32-0.38); low-H E7018 H4. Thicker: 70-120 °C (EN ISO 13916). Saves 50 °C vs S355J2; CET data per heat for WPS.
Q3: S355ML for pressure vessels?
A: Yes, PED III (EN 13445); derate >63 mm. UT S3/E3; RT opt. Cost-effective vs QT; dual ASME/EN avail.
Q4: S355ML vs S355J2 price?
A: +100-140 USD/t for TMCP/-50 °C; offset 15-20% thinner + 25% fatigue life. FOB 700-800 USD/t (25 mm); vol discount 10-15%.
Q5: Z35 in S355ML?
A: Z25 std; Z35 stocked (≥35% RA EN 10164 Cl.3) for tension; +15-25 USD/t. Norsok M-120 compliant for welds.
Q6: ASTM equiv for S355ML?
A: A572 Gr.50 + Z35; yield 345 MPa, –50 °C add. A633 Gr.C for normalized alt; TMCP HAZ better. Dual-cert stocked.
Q7: Custom S355ML lead time?
A: Stock 1-3 days; processed 2-5 days; mill 3-5 weeks. 95% OTIF; air <10 MT 24-48 hrs.
For S355ML chem plates, quote now.
Email: admin@gangsteel.com WhatsApp/WeChat/Mobile: +86 135 9887 9167 Website: https://gangsteel.net/
Gangsteel—Composition Precision, Project Ready.
ASTM A516 GR 70 equivalent materials is such as ASME SA516 GR 70, EN 10028 P355GH, and BS1501 224-490 A & B, sh
we supply high-quality A516 Gr 70 steel plate for pressure vessel applications and other standards like ASTM A2
EN10028-2 P355GH for High-Strength Low-Alloy Columbium-Vanadium Structural Steel EN10025-2 S355J2 Structural St
We export A240 304L Stainless Coil 2B, NO.1 No.4 surface, the thickness 0.1mm to 3mm, 3mm to 22mm, Mother mill
