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Gangsteel – China's Leading Mill-Direct Supplier & Exporter of S355ML Density EN 10025-4 Steel Plates
Gangsteel is the authoritative supplier for S355ML density EN 10025-4 steel plates, providing precise material data and premium stock to support accurate engineering calculations worldwide. With a density of 7.85 g/cm³ (7850 kg/m³), S355ML offers an optimal strength-to-weight ratio for high-performance applications, making it ideal for weight-sensitive designs like offshore structures and wind turbine components. We maintain over 5,000 tons of S355ML plates in permanent stock, available in thicknesses from 6 to 200 mm, widths up to 4200 mm, and lengths to 18 meters—all thermomechanically rolled (TMCP) for superior fine-grain properties, low CEV ≤0.39, and guaranteed –50 °C impact toughness (≥27 J longitudinal).
Produced by elite mills such as HBIS and Shougang with full PED 2014/68/EU and CPR 305/2011 certification, every plate ships with detailed EN 10204-3.1/3.2 mill test certificates confirming density and composition. Third-party inspections from DNV-GL, ABS, Lloyd's Register, Bureau Veritas, CCS, RINA, KR, TÜV, or SGS are standard, alongside Z25/Z35 through-thickness options and 100% UT EN 10160 S2/E2 testing. At 7.85 g/cm³, S355ML enables 15-20% weight reduction versus S355J2, slashing transport and installation costs while maintaining Eurocode 3 compliance.
Whether you're optimizing monopile foundations for Baltic offshore wind or calculating beam deflections for cold-region bridges, Gangsteel's S355ML density data ensures precision. Fast global delivery (3–7 days) and value-added services (cutting, beveling, drilling, rolling, priming) make us the efficient choice. Peruse our broader en 10025 4 High Strength Structural Steel selection for complementary grades. For grade fundamentals, check S355ML Meaning EN 10025-4 Structural Steel Supplier.
The density of S355ML under EN 10025-4:2004 (2019 revision) is a critical property for structural engineers, fixed at 7.85 g/cm³ (7850 kg/m³)—the standard for low-alloy fine-grain steels, reflecting its carbon-manganese composition with microalloying for strength without excessive weight. S355ML is a thermomechanically rolled (TMCP) weldable fine-grain structural steel, where "S" denotes structural applicability, "355" the nominal minimum yield strength of 355 MPa (≤16 mm thick), "M" the TMCP delivery state, and "L" enhanced Charpy V-notch impact of ≥27 J at –50 °C longitudinally.
TMCP—hot deformation at 900-1100 °C followed by controlled cooling (20-40 °C/s)—yields a refined ferrite-bainite microstructure, maintaining this consistent density while optimizing for ductility (≥22% elongation) and fatigue resistance. At 7.85 g/cm³, S355ML's specific gravity (relative to water) is 7.85, enabling precise mass calculations for finite element analysis (FEA) under Eurocode 3 (EN 1993-1-1), where it supports 15-25% thinner sections than S355J2 (same density but lower toughness). This density ensures balanced inertia in beams (I = bh³/12 adjusted for mass) and minimizes buoyancy issues in offshore flotation.
In low-temperature service, the density remains stable down to –50 °C, with no phase changes affecting volume. Microalloying (Nb, V, Ti) pins grains without altering density, while low CEV ≤0.39 prevents weld-induced density variations from porosity. For Polish or Baltic projects, this matches stal S355ML needs under PN-EN 10025-4. Gangsteel verifies density via hydrostatic weighing per ISO 1183-1 if required, with actual values 7.84-7.86 g/cm³. Detailed designation: S355ML Meaning EN 10025-4 Structural Steel Supplier.
S355ML's composition underpins its 7.85 g/cm³ density, with alloying for strength without weight penalty.
|
Element |
Ladle Max (%) |
Product Deviation (%) |
Typical Actual (%) – Gangsteel Stock |
Role in Density & Performance |
|---|---|---|---|---|
|
C |
0.14 |
+0.02 |
0.09–0.12 |
Low for weld; base mass contributor |
|
Si |
0.50 |
+0.05 |
0.20–0.40 |
Deoxidizer; minor density stabilizer |
|
Mn |
1.60 |
+0.10 |
1.20–1.50 |
Strength without density rise |
|
P |
0.025 |
+0.005 |
≤0.018 |
Low for toughness; density neutral |
|
S |
0.020 |
+0.005 |
≤0.015 |
Inclusion control; no density impact |
|
Nb |
0.05 |
+0.01 |
0.02–0.04 |
Grain refiner; trace density |
|
V |
0.10 |
+0.02 |
0.04–0.08 |
Hardening; minimal mass |
|
Al min |
0.020 |
+0.030 (total) |
0.025–0.045 |
Deoxidizer; density via oxides |
|
Ti |
0.05 |
+0.03 |
0.01–0.03 |
Nitride pinning; negligible |
|
Cr |
0.30 |
+0.05 |
0.10–0.25 |
Hardenability; slight density + |
|
Ni |
0.50 |
+0.05 |
0.20–0.40 |
Toughness; density neutral |
|
Mo |
0.10 |
+0.03 |
≤0.05 |
Alloy; trace |
|
Cu |
0.55 |
+0.03 |
0.20–0.35 |
Deoxidizer; minor + |
|
N |
0.015 |
+0.003 |
≤0.012 |
Controlled; no effect |
|
CEV max |
0.39 |
N/A |
0.32–0.38 |
Weld index; density indirect |
CEV = C + Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15. Density stable 7.85 g/cm³. Equivs like Q355E match. Full: S355ML Chemical Composition EN 10025-4 Supplier.
Density 7.85 g/cm³ aids load calc; properties consistent.
|
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 >150 mm; Gangsteel 295 MPa to 180 mm. Hardness 140-180 HBW. Curves: S355ML Mechanical Properties EN 10025-4 Plate Supplier.
S355ML density/performance 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 |
|
Density (g/cm³) |
7.85 |
7.85 |
7.85 |
7.85 |
|
Apps |
Light frames |
Bridges |
Offshore |
Cranes |
|
Gangsteel Stock |
High |
V. High |
Highest |
Med |
S355ML density same, but TMCP for cold equiv; vs S275ML, 30% stronger thinner; vs S420ML, ductility. See S355M vs S355ML EN 10025-4 Steel Plate Comparison Supplier.
Density 7.85 g/cm³ consistent across equivs.
|
Standard |
Equivalent Grade |
Key Match Notes |
Typical Use Case |
|---|---|---|---|
|
ASTM/ASME |
A572 Gr.50 + Z35 |
Yield 345 MPa; density 7.85 |
U.S. density-calc bridges |
|
JIS G 3106 |
SM490A |
Rm 490 MPa; 7.85 g/cm³ |
Japanese weight-opt marine |
|
GB/T 1591 |
Q355E |
Low-temp; same density |
China density FEA |
|
API 2W |
Grade 50 |
Offshore; 7.85 |
Gulf buoyancy designs |
|
EN 10025-6 |
S355QL |
QT; density match |
Heavy density loads |
Indicative; TMCP S355ML HAZ better. Dual-cert. Full: S355ML Equivalent Material EN 10025-4 Plate Supplier.
7.85 g/cm³ enables accurate mass/volume in FEA; Eurocode 3, 18% less steel.
Notes: Interpass 150°C; ER50-2. FEA density input 7850 kg/m³, 2% hardening. Eco: 97% recycle, 20% CO2 save. Gangsteel V-50°, UT S4.
To 92+ countries: Rotterdam 7 days.
Q1: S355ML density exact value?
A: 7.85 g/cm³ (7850 kg/m³) standard for low-alloy steel; stable –50 to 20 °C. Verified hydrostatic ISO 1183-1; actual 7.84-7.86 g/cm³. Key for FEA mass, buoyancy offshore.
Q2: S355ML vs S355M difference?
A: Impact: S355ML ≥27J –50 °C for cold (offshore/Arctic); S355M ≥40J –20 °C for temperate. Yield/chem/density same—ML for < –20 °C (DNV-OS-B101). Gangsteel stocks both with MTCs.
Q3: 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.
Q4: S355ML for pressure vessels?
A: Yes, PED III (EN 13445); derate >63 mm. UT S3/E3; RT opt. Density aids pressure calc; cost-effective vs QT; dual ASME/EN.
Q5: Z35 in S355ML?
A: Z25 std; Z35 stocked (≥35% RA EN 10164 Cl.3) for tension; +15-25 USD/t. Norsok M-120 for welds; density neutral.
Q6: ASTM equiv for S355ML density?
A: A572 Gr.50 + Z35; density 7.85 g/cm³, yield 345 MPa, –50 °C add. A633 Gr.C 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; density verified MTC.
For S355ML density plates, quote now.
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