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Gangsteel – China's Leading Mill-Direct Supplier & Exporter of S355 Material Equivalent EN 10025-4 Steel Plates
Gangsteel is the global authority for S355 material equivalent EN 10025-4 steel plates, offering verified international cross-reference grades and dual/triple-certified plates that fully match or exceed S355M/S355ML (EN 10025-4) properties under ASTM, JIS, GB/T, API, and other standards. We stock over 12,000 tons of S355 material and equivalents in thicknesses 6–200 mm, widths 1500–4200 mm, and lengths up to 18 meters, all TMCP-processed for optimal weldability and low-temperature toughness. Produced by top mills like HBIS and Shougang with full PED 2014/68/EU and CPR 305/2011 certification, our plates include EN 10204-3.1/3.2 MTCs with detailed equivalent mapping, third-party inspections from DNV-GL, ABS, Lloyd's Register, Bureau Veritas, CCS, RINA, KR, TÜV, or SGS, and Z25/Z35 through-thickness quality in stock.
S355 material equivalents enable seamless substitution in multinational projects, reducing procurement complexity while maintaining the grade's core advantages: 355 MPa minimum yield strength, tensile range 470-630 MPa, elongation ≥22%, and impact toughness (S355M ≥40 J at –20 °C, S355ML ≥27 J at –50 °C longitudinal). Whether you're sourcing for European offshore wind, American bridge retrofits, or Asian shipyards, Gangsteel provides dual-certified (EN + ASTM/GB/JIS) plates with identical properties. Fast 3–7 day delivery worldwide and processing (cutting, beveling, drilling, rolling, priming). Explore our en 10025 4 High Strength Structural Steel series. For grade basics, S355ML Meaning EN 10025-4 Structural Steel Supplier.
S355 material equivalent under EN 10025-4:2004 (2019) refers to international steel grades that match or closely approximate S355M (standard temp) and S355ML (low temp) — thermomechanically rolled (TMCP) weldable fine-grain structural steels with 355 MPa minimum yield strength and enhanced impact toughness (S355M ≥40 J at –20 °C, S355ML ≥27 J at –50 °C longitudinal). The designation "S355M/ML" means "S" structural, "355" nominal yield (MPa, ≤16 mm transverse), "M" TMCP delivery (900-1100 °C rolling + 20-40 °C/s cooling), "L" low-temp.
TMCP's fine grains (ASTM 8-10) and low CEV ≤0.39 provide superior weldability (no preheat to 80 mm) and isotropy versus normalized or QT alternatives. Equivalents are vital for global projects, allowing substitution without re-qualification under codes like Eurocode 3 or DNV-OS-B101. Common scenarios include replacing S355ML with Q355E (GB) for Chinese-EU hybrids or A572 Gr.50 + Z35 (ASTM) for U.S. compliance.
Gangsteel supplies S355 material with dual/triple certification, ideal for hybrid specs. For chemical basis, S355ML Chemical Composition EN 10025-4 Supplier; mechanical, S355ML Mechanical Properties EN 10025-4 Plate Supplier.
|
Element |
S355M/ML (EN 10025-4) max % |
Q355C/E (GB/T 1591) max % |
A572 Gr.50 (ASTM) max % |
SM490A/B (JIS G 3106) max % |
Difference & Impact |
|---|---|---|---|---|---|
|
C |
0.14 |
0.18 |
0.23 |
0.18 |
Lower C in S355 = better HAZ |
|
Si |
0.50 |
0.55 |
0.40 |
0.55 |
Similar |
|
Mn |
1.60 |
1.70 |
1.35 |
1.60 |
Similar |
|
P |
0.025 |
0.030 |
0.040 |
0.035 |
Tighter in S355 |
|
S |
0.020 |
0.030 |
0.050 |
0.035 |
Much lower in S355 |
|
Nb + V + Ti |
0.20 combined |
0.20 combined |
Limited |
0.17 combined |
Similar microalloying |
|
CEV max |
0.39 |
0.43 |
0.45 |
0.44 |
S355 best weldability |
S355M/ML has the tightest chemistry → superior HAZ toughness and preheat-free welding.
|
Property |
S355M/ML (EN 10025-4) |
Q355C/E (GB/T 1591) |
A572 Gr.50 (ASTM) |
SM490A/B (JIS) |
Notes |
|---|---|---|---|---|---|
|
Yield Strength ReH (MPa) |
355 (≤16 mm) → 285–295 (>150 mm) |
355 (≤16 mm) → 275 (>100 mm) |
345 (all thicknesses) |
355 (≤16 mm) → 295 (>100 mm) |
S355 better in thick plates |
|
Tensile Strength Rm (MPa) |
470–630 |
470–630 |
450 min |
490–610 |
Similar |
|
Elongation A5 (%) |
≥22 |
≥22 |
≥21 |
≥17 |
S355 better ductility |
|
Impact Toughness (long.) |
S355M: ≥40 J at –20 °C S355ML: ≥27 J at –50 °C |
≥34 J at –20 °C (optional –40 °C) |
No mandatory low-temp |
No mandatory low-temp |
S355 vastly superior |
S355M/ML offers better thick-plate yield and guaranteed low-temp toughness compared to most equivalents.
Q1: Best S355 equivalent for U.S. projects?A: A572 Gr.50 + Z35; yield 345 MPa close, add –20/–50 °C KV for full match. Dual-cert available.
Q2: JIS SM490A/B vs S355M/ML?A: SM490A/B Rm 490 MPa equiv, no low-temp guarantee. S355ML TMCP finer HAZ. Dual-cert for Japanese-EU JV.
Q3: Q355C/E (GB) substitution?A: Exact match per GB/T 1591; CEV similar. Ideal China-EU; Gangsteel dual EN/GB MTCs.
Q4: API 2W Gr.50 for offshore equiv?A: Yes, weldable equiv; S355ML LT superior (CTOD opt). For Gulf/Baltic, API RP 2Z; stock with DNV approval.
Q5: S355QL (EN 10025-6) alt equiv?A: QT version same strength; S355ML cheaper, no distortion. For lifts, QL if >500 MPa needed.
Q6: Equiv price diff?A: Equivs 10-30 USD/t cheaper (local stock); S355ML premium for TMCP. FOB 680-780 USD/t equiv (25 mm).
Q7: Lead time for S355 equivs?A: Stock 2-4 days; processed 3-6 days; mill 4 weeks. Dual-cert +1 week.
For S355 material equivalent plates, quote now.
Email: admin@gangsteel.com WhatsApp/WeChat/Mobile: +86 135 9887 9167 Website: https://gangsteel.net/
Gangsteel—Equivalents Expertise, Global Reach.
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