S355ML Equivalent Material EN 10025-4 Plate Supplier

 

 

S355ML Equivalent Material EN 10025-4 Plate Supplier

Gangsteel – China's Leading Mill-Direct Supplier & Exporter of S355ML Equivalent Material EN 10025-4 Plates

Gangsteel is your premier partner for S355ML equivalent material EN 10025-4 plates, offering a comprehensive range of international cross-references and direct substitutes to meet global project specifications. We stock over 5,000 tons of S355ML and its 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 performance. Produced by top mills like HBIS and Shougang with full PED 2014/68/EU and CPR 305/2011 compliance, our plates include EN 10204-3.1/3.2 MTCs and third-party inspections (DNV-GL, ABS, Lloyd's Register, Bureau Veritas, CCS, RINA, KR, TÜV, SGS).

Whether you're sourcing for European offshore wind farms, American bridge retrofits, or Asian shipyards, Gangsteel bridges standards like EN 10025-4 with ASTM, JIS, GB/T, and more—ensuring seamless certification and cost savings. Z25/Z35 through-thickness available ex-stock, 100% UT EN 10160 S2/E2 standard. Fast delivery worldwide (3–7 days to major ports). Discover our full en 10025 4 High Strength Structural Steel lineup for related options.

 

What is S355ML Equivalent Material EN 10025-4 Plate?

S355ML equivalent material refers to international steel grades that match or closely approximate the properties of S355ML under EN 10025-4:2004 (2019 revision)—a thermomechanically rolled (TMCP) weldable fine-grain structural steel with 355 MPa minimum yield strength and ≥27 J Charpy V-notch impact at –50 °C longitudinally.The "S355ML" designation breaks down as: "S" for structural, "355" for yield (MPa, ≤16 mm), "M" for TMCP delivery, and "L" for low-temperature toughness.

TMCP—hot rolling at 900-1100 °C with controlled cooling (20-40 °C/s)—creates a refined ferrite-bainite microstructure, ensuring CEV ≤0.39 for preheat-free welding up to 80 mm and fine grains (ASTM 8-10) for ductility (≥22% elongation). Equivalents are crucial for multinational projects, allowing substitution without re-qualification under codes like Eurocode 3 or DNV-OS-B101. Common scenarios include replacing S355ML with ASTM A572 Gr.50 + Z35 for U.S. bridges or Q355E for Chinese-EU hybrids.

Gangsteel supplies S355ML and equivalents with dual certification, ideal for seamless transitions. For grade basics, see S355ML Meaning EN 10025-4 Structural Steel Supplier. Our equivalents reduce lead times by leveraging local stock while maintaining EN 10025-4 compliance.

 

Chemical Composition – Ladle and Product Analysis Combined

S355ML's chemistry is tightly controlled for weldability and toughness; equivalents share similar limits.

Element	Ladle Max (%)	Product Deviation (%)	Notes (Typical Actual)
C	0.14	+0.02	0.09-0.13 (low for HAZ)
Si	0.50	+0.05	0.20-0.40 (deoxidizer)
Mn	1.60	+0.10	1.20-1.50 (strength)
P	0.025	+0.005	<0.020 (brittleness control)
S	0.020	+0.005	<0.015 (inclusion min)
Nb	0.05	+0.01	0.02-0.04 (grain refiner)
V	0.10	+0.02	0.04-0.08 (precipitation)
Al min	0.020	+0.030 (total)	0.025-0.045 (deoxidizer)
Ti	0.05	+0.03	0.01-0.03 (nitride former)
Cr	0.30	+0.05	0.10-0.25 (hardenability)
Ni	0.50	+0.05	0.20-0.40 (toughness)
Mo	0.10	+0.03	<0.05 (minor alloy)
Cu	0.55	+0.03	0.20-0.35 (deoxidizer)
N	0.015	+0.003	<0.012 (nitrogen control)
CEV max	0.39	N/A	0.32-0.38 (weld key)

CEV = C + Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15. Equivalents like Q355E (GB) match within ±0.02%. Full: S355ML Chemical Composition EN 10025-4 Supplier.

 

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

Equivalents align closely; S355ML TMCP ensures isotropy.

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 agreement >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 vs. EN 10025-4 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	Offshore equiv	Cranes
Gangsteel Stock	High	V. High	Highest	Med

S355ML > S355M for equiv cold; vs S275ML, 30% stronger; vs S420ML, ductility. See S355M vs S355ML EN 10025-4 Steel Plate Comparison Supplier.

 

Equivalent International Grades

S355ML equivalents for global substitution.

Standard	Equivalent Grade	Key Match Notes	Typical Use Case
ASTM/ASME	A572 Gr.50 + Z35	Yield 345 MPa; add –50 °C KV & Z-test	U.S. bridges, AISC 360
JIS G 3106	SM490A/B	Rm 490 MPa; –40 °C KV standard	Japanese shipyards, JIS G 3444 pipes
GB/T 1591	Q355E	Low-temp Q345 equiv; GB 1591-2018	China-EU offshore, GB 50205 codes
API 2W	Grade 50	Offshore weldable; CTOD >0.25 mm opt	Gulf platforms, API RP 2Z
EN 10025-6	S355QL	QT alt; similar ReH but higher cost	Heavy lifts, EN 1090 EXC4

Indicative; S355ML TMCP better HAZ. Dual-cert available. Full cross-ref: S355ML Equivalent Material EN 10025-4 Plate Supplier.

 

Applications & Design Considerations for S355ML Equivalents

Equivalents enable flexible sourcing; S355ML TMCP for field, Q355E for domestic.

• Offshore: A572 equiv monopiles, –50 °C KV vs. brittle; fatigue 10^8 cycles 140 MPa DNV-RP-C203.
• Bridges: SM490A girders, Z35 tears; HIC Class 1.
• Pipes: Q355E penstocks, A5 3% drifts EN 1998-1; C4M <0.08 mm/yr epoxy.
• Lifts: S355QL booms, 3t radius; 55 yr ICCP.

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

 

Why Choose Gangsteel for S355ML Equivalents

• 5,000+ t stock equivalents.
• 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: Siemens 1,000+ t equiv (Hornsea), Total (Ichthys)—OTIF 100%.

To 92+ countries: Rotterdam 7 days.

 

FAQ

Q1: Best S355ML equiv for U.S. projects?

A: A572 Gr.50 + Z35; yield 345 MPa close, but add –50 °C KV testing for full match. A633 Gr.C alt for normalized. Dual-cert for AISC 360; Gangsteel supplies with U.S. stamps.

Q2: JIS SM490A vs S355ML?

A: SM490A Rm 490 MPa equiv, –40 °C KV standard; S355ML TMCP finer HAZ. For Japanese-Polish JV, SM490A cost-effective; Gangsteel offers both with JIS certs.

Q3: Q355E (GB) substitution?

A: Exact low-temp match per GB/T 1591; CEV similar. Ideal China-EU; Gangsteel dual EN/GB MTCs for Belt & Road.

Q4: API 2W Gr.50 for offshore?

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?

A: QT version same strength; S355ML cheaper, no distortion. For lifts, QL if >500 MPa needed; both stocked.

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 equivs?

A: Stock 2-4 days; processed 3-6 days; mill 4 weeks. Dual-cert +1 week.

 

Contact Gangsteel

For S355ML equiv plates, quote now.

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

Gangsteel—Equivalents Expertise. Matched for your market.

 

 

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