Description

Technical Parameters

Product Overview

EN 10149-2 S550MC Steel Plate (EN 1.0986) is a thermomechanically rolled high-strength structural steel designed for cold-forming applications. With a minimum yield strength of 550 MPa, it offers good formability, weldability, and weight-saving potential for structural components.

Technical Specifications

EN 10149-2 S550mc Plate Standard Specification

Grade	S550MC
Steel Number	1.0986
Plate Thickness Range	2 - 10 mm
Width (in mm)	Up to 1600 mm
Length (in mm)	Up to 16000 mm
Other Grades	S355MC, S460MC, S420MC, S550MC, S500MC, S650MC, ALFORM, S700MC, PERFORM

International Equivalent Grades
GB	HR550F / BS600MC
Germany (DIN/SEW)	QStE 550TM (SEW 092)
UK (BS)	75F70
France (NFA)	E560D
Italy (UNI)	FeE560TM

S550MC | 1.0986: Mechanical Properties, Longitudinal

Upper yield¹⁾ strength ReH MPa min.	Tensile strength Rm MPa	Elongation at fracture A80 % min.	Elongation at fracture A³⁾ % min.
550	600–760	12	14

S550MC | 1.0986: Chemical Composition (Heat Analysis)

Percentage by weight % max.
C	Mn	Si	P	S	Altotal min.	Nb	V	Ti
0.12	1.80	0.50	0.025	0.015	0.015	0.09²⁾	0.20²⁾	0.15 ²⁾

Engineering Features

Micro-alloying (Nb, V, Ti) and TMCP processing provide high yield strength, enabling up to 30%–40% weight reduction compared to S355 steel while maintaining structural performance.

Low sulfur content (≤ 0.015%) and sulfide shape control minimize edge cracking during 180° cold bending, lowering scrap rates in press forming.

Low carbon content (≤ 0.12%) and a low CEV (≤ 0.38%) ensure reliable weldability across standard MIG/MAG, TIG, and SAW processes without mandatory pre-heating.

Precision tension levelling reduces internal residual stress, preventing plate deformation during thermal laser cutting.

Supply Range & Processing Capabilities

Thickness: 2 - 10 mm

Width: Up to 1600 mm

Length: 2,000 mm – 12,000 mm (Cut-to-Length / Sheet) or Mother Coils

Surface Condition: As-rolled (black), Pickled & Oiled (P&O)

Secondary Processing: Precision Slitting, Cut-to-Length, Fiber Laser Cutting, Beveling, Surface Oiling, Edge Deburring.

Packaging: Export-grade seaworthy packaging with VCI anti-rust paper, plastic film wrapping, heavy-duty steel strapping, edge corner protectors, and solid wooden pallets.

Primary Applications

Commercial Vehicles: Truck frame chassis side members, cross members, and cold-formed profile sections.

Lifting & Construction Equipment: Crane booms, telescopic arms, concrete pump trucks, and excavator components.

Agricultural Machinery: Heavy-duty trailer frames, tillage equipment structures, and load-bearing brackets.

Structural Components: Cold-formed steel channels, angles, rectangular hollow sections, and dump truck bodies.

Manufacturing & Quality Assurance

100% Heat Traceability: Every plate is physical-stamped and lab-tagged with a Heat Number directly linked to raw material ladle chemistry.

Certified Quality Systems: Manufactured under mill practices compliant with ISO 9001:2015, ISO 14001:2015, and IATF 16949 standards.

Testing Protocols:
Tensile & Elongation Testing per ISO 6892-1 / ASTM A370
180° Cold Bend Radius Testing per ISO 7438
Chemical Analysis via Optical Emission Spectrometry (OES)
Ultrasonic Flaw Detection (UT) per EN 10160 for internal defect control (upon request)

Third-Party Inspection: Pre-shipment factory acceptance testing (FAT) by independent agencies including SGS, TÜV, Bureau Veritas (BV), or Intertek is fully supported prior to vessel loading.

Compliance Documentation & Order Verification

EN 10204 3.1 Mill Test Certificate (MTC): Certified original showing actual heat chemical analysis and mechanical test data.

Commercial Invoice & Detailed Packing List: Listing Heat Numbers per item bundle/pallet for full warehouse tracking.

Bill of Lading (B/L): Clean on board sea transport documentation.

Certificate of Origin (CO): Form E, Form R, or General CO provided upon request.

FAQ

Q: Do you supply MTC EN 10204 3.1 with chemical and mechanical test values for each heat?

A: Yes. A 3.1 certificate showing actual ladle analysis, tensile test results, yield strength, elongation, and bend test results for the specific heat number is provided with every shipment.

Q: Can S550MC be laser cut without severe plate distortion?

A: Yes. Our S550MC plates are processed through high-precision tension levelling to minimize residual stress, ensuring superior flatness during and after thermal laser cutting.

Q: What is the standard lead time for a full container load (FCL)?

A: Standard mill production time is 15 to 25 days depending on specification and order volume. Stock sizes can be dispatched within 7 days.

Q: What is the Minimum Order Quantity (MOQ)?

A: Standard production MOQ is 3–5 tons per size. For stock sizes or trial orders, sample quantities starting from 1 ton/plate are supported.

Q: Can you provide free material samples for bending or welding tests?

A: Yes. We offer free A4-sized samples or small coupons for quality verification; buyers only cover the express courier fee.

Q: What standard delivery conditions and surface finishes are available?

A: Supplied in Thermomechanically Rolled condition (+M). Surface options include As-Rolled (Black) or Pickled & Oiled (P&O) for immediate painting or precision cutting.

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EN 10149-2 S550mc Steel Plate EN 1.0986 Sheet