MARINE ALUMINUM PLATE · MILL CERTIFICATES
5083 / 5086 / 5754 plate and sheet from a DNV-approved mill, with EN 10204 test certificates.
The specimen mill test certificate below shows the layout and the measured values used on a
2022 shipment of 5083-H116 plate — the same format your surveyor will receive. Every shipment
leaves with its own DNV-witnessed MTC, issued under the producing mill’s current DNV Works
Approval. Additional class-society approvals (ABS · BV) and independent third-party witnessing
(SGS) are arranged per project on request.
5083 H116 / H3215–50 mm · most-ordered marine plate
DNV Works Approvalwitnessed on every shipment
EN 10204 3.1 / 3.2MTC with every shipment
ASTM B928 + G67 / G66chemistry & corrosion tested per heat
§01 — GRADES WE SUPPLY
Marine aluminum plate grades at a glance
Standard marine grades and the plate sizes we offer them in. Tell us the society your project is
specified against at enquiry stage and we confirm the mill’s current approval for that exact
combination before firm offer.
| Grade | Temper | Thickness range | Standard sizes | Typical marine use | Certificate & society |
|---|---|---|---|---|---|
| 5083 | H116 / H321 | 5 – 50 mm | 2000×6000 1500×6000 | Hull shell, bottom and side plating, deck plating, transverse bulkheads, superstructuresWorkhorse alloy for classed newbuilds above 5 mm | DNV Works Approval 3.1 standard, 3.2 on request |
| 5086 | H116 / H111 | 5 – 25 mm | 2000×6000 1500×6000 | Hull and superstructure plating, transverse members in welded assembliesLower Mg range than 5083 — better formability | Mill MTC 3.1 standard 5086 outside the producing mill’s DNV scope |
| 5754 | O / H111 | 3 – 12 mm | 1500×3000 2000×4000 | Superstructures, non-structural marine parts, tank truck / pressure-vessel shellsCommon when weldability + corrosion resistance over strength | DNV (O temper) · 3.1 standard H111 not on DNV scope · SGS witnessed on request |
| 5052 | H32 / H34 | 1.5 – 8 mm | 1220×2440 1500×3000 | Small craft hulls, fuel and water tanks, marine trim and bracketsSheet-form material — cut-to-size from coil stock | Mill MTC 3.1 standard DNV O temper only · SGS independent witnessing on request for H32/H34 |
Standard widths
1000 / 1500 / 2000 / 2500 mmother widths per mill schedule
Lengths
2000 – 8000 mmcut-to-length from your nesting plan
Tolerances
Per ASTM B928per heat and per thickness bracket
Surface
Mill finish · smooth · paper interleavedoptional PVC one-side on request
§02 — MILL TEST CERTIFICATE
Mill test certificate — the format your surveyor receives
The specimen below follows the certificate issued for an actual 2022 shipment of
5083-H116 plate, 8 × 2000 × 6000 mm, 10 pieces, 2.548 t. The chemistry, the five
tensile samples and the ASTM G67 / G66 corrosion results are the measured values from that
shipment. The producing facility name, certificate number, heat number and the surveyor’s
endorsement appear on the certificate issued for each individual order — this specimen shows
the layout you will receive.
Mill Test Certificate · EN 10204 type 3.2 · DNV surveyor witnessed
SPECIMEN COPY
SPECIMEN COPY
MILL TEST CERTIFICATE
EN 10204 type 3.2 · issued by the producing mill
Producing mill: stamped on the certificate for your order
Operating under the producing mill’s current DNV Works Approval
Operating under the producing mill’s current DNV Works Approval
Certificate no.per-order issuance
Issue date2022 — 06 — 24
Product formAluminium plate
Heat / batch no.per batch
Alloy / temper5083 / H116
Quantity10 pieces · 2.548 t net
Dimensions8 × 2000 × 6000 mm
Manufacturing std.DNV rules for classification
Works approvalDNV · appears on certificate
WitnessDNV surveyor, 2022-06-24
Chemical composition — wt%, by ICP-OES
| Element | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Other each | Other total | Al |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Spec (EN 573-3) | ≤ 0.40 | ≤ 0.40 | ≤ 0.10 | 0.40 – 1.0 | 4.0 – 4.9 | 0.05 – 0.25 | ≤ 0.25 | ≤ 0.15 | ≤ 0.05 | ≤ 0.15 | Balance |
| Value measured | 0.093 | 0.270 | 0.021 | 0.510 | 4.317 | 0.134 | 0.018 | 0.015 | ≤ 0.05 | ≤ 0.15 | Balance |
Test method: ICP-OES per ASTM E1251 · sampling per EN 1436
Mechanical properties — five tensile samples, transverse direction
| Sample | Tensile strength Rm (MPa) | Yield strength Rp0.2 (MPa) | Elongation A50 (%) |
|---|---|---|---|
| Requirement | ≥ 305 | ≥ 215 | ≥ 10 |
| Sample 19 | 332 | 238 | 20 |
| Sample 20 | 333 | 239 | 19 |
| Sample 21 | 320 | 224 | 17 |
| Sample 22 | 321 | 225 | 17 |
| Sample 23 | 320 | 223 | 17 |
Rectangular proportional specimens, gauge length 50 mm · tested at ambient temperature 22 °C ·
EN 10002-1 / ASTM E8
EN 10002-1 / ASTM E8
Corrosion testing
Intergranular corrosion — ASTM G67
2.8 mg/cm²
Requirement 1 – 15 mg/cm² · nitric acid mass loss test
Exfoliation corrosion — ASTM G66
PA rating
Requirement ≥ PB · PA is the highest rating on the scale
Independent witness statement.
We hereby certify that the material has been made by an approved process and has been
satisfactorily tested in accordance with DNV rules for classification. The undersigned DNV
surveyor, acting as independent third party, witnesses that the results shown above were
obtained from samples selected, prepared and tested at the producing facility. A certificate
witnessed in this way is equivalent to an EN 10204 type 3.2 inspection document.
We hereby certify that the material has been made by an approved process and has been
satisfactorily tested in accordance with DNV rules for classification. The undersigned DNV
surveyor, acting as independent third party, witnesses that the results shown above were
obtained from samples selected, prepared and tested at the producing facility. A certificate
witnessed in this way is equivalent to an EN 10204 type 3.2 inspection document.
For the manufacturer
Quality manager — signature & date
mill stamp
For the independent witness
Surveyor — signature & date
surveyor stamp
Notes: ① All test results comply with the specified standards. ② This certificate covers
the product as supplied; any subsequent processing (cutting, forming, welding) may alter
the stated properties. ③ Verification of this document: contact info@aymetals.com
quoting the certificate number shown on the issued copy.
the product as supplied; any subsequent processing (cutting, forming, welding) may alter
the stated properties. ③ Verification of this document: contact info@aymetals.com
quoting the certificate number shown on the issued copy.
What ships with every plate order
- Mill test certificate · EN 10204 3.1 per heat — chemistry, tensile, G67 / G66.
- DNV-witnessed certificate · EN 10204 3.2 on request, surveyor endorses on site.
- Certificate of origin & commercial invoice · for customs clearance.
- Packing list · heat-number matched against each bundle.
- Grade stencil & traceability · heat number marked on plate, matched to MTC.
- Loading record · photos + video of marking, packing, container loading.
Other documents you may need
- WPS / WPQR & welder qualifications · for classed welding work — supplied on request.
- Heat treatment records · for H116 / H321 temper verification — supplied on request.
- Charpy / drop-weight test · for cryogenic service — quoted as an add-on.
- Surface roughness record · for cosmetic-critical panels — supplied on request.
Pre-shipment inspection: DNV · ABS · BV · SGS or your nominated inspector.
Scope agreed before production.
Scope agreed before production.
Specimen — layout only. The five tensile values, the ICP-OES composition and the G67 / G66
results above are measured values from a 2022 shipment and are shown exactly as issued.
Your order ships with its own MTC carrying your batch’s heat number, certificate number,
producing mill details and surveyor’s endorsement.
results above are measured values from a 2022 shipment and are shown exactly as issued.
Your order ships with its own MTC carrying your batch’s heat number, certificate number,
producing mill details and surveyor’s endorsement.
§03 — DIMENSIONS & TOLERANCES
Standard plate sizes and dimensional tolerances
Tolerance values below are the EN 485-3:2003 tables for hot-rolled plate, the table most
European marine specs reference. Where your project is written to ASTM B928 / ANSI H35.2 or
GB/T 3880, the applicable table differs slightly — we confirm it with the producing mill and
state it in the order acknowledgment.
Standard plate sizes — mill stock
| Form | Thickness | Standard width × length | Notes |
|---|---|---|---|
| Plate (cut-to-length) | 5 – 50 mm | 1500 × 6000 mm · 2000 × 6000 mm | Widths 1000 / 1500 / 2000 / 2500 mm available per mill schedule.Length cut to your nesting plan, typical 2000–8000 mm. |
| Sheet (coil-cut) | 1.5 – 8 mm | 1220 × 2440 mm · 1500 × 3000 mm | Larger flat sheets cut from coil stock.Tolerance from EN 485-4 unless tighter is specified. |
| Mill-size plate | 8 – 50 mm | 2000 × 6000 mm — the size on most DNV-witnessed MTCs | Common export plate size, fits a 20′ container vertically.≈ 6.5 t per bundle in 5083. |
Thickness tolerance — EN 485-3:2003 Table 1, hot-rolled plate (values are ± mm)
| Specified thickness | Width ≤ 1250 mm | Width 1250 – 1600 mm | Width 1600 – 2000 mm | Width 2000 – 2500 mm |
|---|---|---|---|---|
| 5 – 6 mm | 0.32 | 0.32 | 0.40 | 0.45 |
| 6 – 8 mm | 0.35 | 0.40 | 0.40 | 0.50 |
| 8 – 10 mm | 0.45 | 0.50 | 0.50 | 0.55 |
| 10 – 15 mm | 0.50 | 0.60 | 0.65 | 0.65 |
| 15 – 20 mm | 0.60 | 0.70 | 0.75 | 0.80 |
| 20 – 30 mm | 0.65 | 0.75 | 0.85 | 0.90 |
| 30 – 40 mm | 0.75 | 0.85 | 1.00 | 1.10 |
| 40 – 50 mm | 0.90 | 1.00 | 1.10 | 1.20 |
Flatness — EN 485-3:2003 Table 5, plate 6 – 50 mm
| Deviation on length (dmax / L) | Partial deviation, 300 mm chord (dmax / l) | Deviation on width (dmax / W) |
|---|---|---|
| 0.2 % | 0.4 % | 0.3 % |
Width and length: plate cut to your nesting plan, tolerance stated on the order acknowledgment
(cut-edge and mill-edge tolerances differ). Ultrasonic testing, tighter thickness tolerance and
squareness limits quoted as line items. Marine plate is normally ordered to ASTM B928 or EN 485-3;
we confirm which table governs your order before production.
(cut-edge and mill-edge tolerances differ). Ultrasonic testing, tighter thickness tolerance and
squareness limits quoted as line items. Marine plate is normally ordered to ASTM B928 or EN 485-3;
we confirm which table governs your order before production.
§04 — ORDER BASICS
MOQ, lead time, packing, payment and shipping marks
Default terms used unless we agree otherwise in the order acknowledgment. For first orders,
L/C at sight is the safest instrument; for repeat business T/T 30/70 is normal.
| Item | Default | Detail |
|---|---|---|
| Minimum order | 1 t or one 20′ container | ≈ 4 plates of 8 × 2000 × 6000 mm in 5083. Below 1 t — case-by-case. |
| Typical lead time | 30 – 45 days from PO | 15 days production after PO · 7 – 10 days for DNV surveyor witness · 14 – 20 days transit.Expedite and hold-for-stock programs available for repeat alloys and sizes. |
| Packing | Export seaworthy · steel-strapped bundles on wooden pallets | Plastic cap on edges, kraft paper interleaved, desiccant in container.Plate bundles ≈ 1.5 – 3 t per bundle depending on size. |
| Shipping marks | Standard mill stencil on each plate + per your spec on bundles | Heat number + grade + temper + plate no. on each plate. Color code per your project spec (e.g. navy / signal red). |
| Payment | T/T 30 % deposit, balance against B/L copy · L/C at sight also accepted | L/C recommended for first orders. Open-account after two shipped orders. |
| Delivery terms | FOB · CFR · CIF · DDP | CFR/CIF quotes include sea freight to the named port. Inland haul to project site quoted on request. |
| Loading | 20’GP · 40’GP · bulk vessel | 20’GP takes ≈ 18 – 22 t of 8 mm 5083 plate. 40’GP takes ≈ 22 – 26 t of the same.Bundle vertical for plate under 12 mm, horizontal for thicker. |
| Documents | MTC + invoice + packing list + BL + CoO + shipping marks photo | Sent by email at B/L issuance. Originals follow by courier / hand-carry on request. |
§05 — CLASS SOCIETY APPROVALS
What the mill holds in standing — and what we arrange for your order
DNV is the approval the mill holds in standing. ABS and BV (additional class-society
approvals) and SGS (independent third-party witnessing) are arranged against your spec on
request, subject to the mill’s current approval status for your alloy, temper and
thickness.
DNV
Primary approval — held by the mill
Primary approval — held by the mill
Works Approval covers wrought aluminium & alloys — 5083 in O / H111 / H112 / H116 / H321,
5754 in O, 5052 in O, rolled plates 3 – 50 mm. This is the approval that governs every
order we quote.
5754 in O, 5052 in O, rolled plates 3 – 50 mm. This is the approval that governs every
order we quote.
Additional approvals:
ABS · BV · SGS —
class-society approvals (ABS · BV) and independent third-party witnessing (SGS), arranged on
request for specific projects, subject to the producing mill’s current approval status for
your alloy, temper and thickness. Confirmed in writing before any order is committed.
ABS · BV · SGS —
class-society approvals (ABS · BV) and independent third-party witnessing (SGS), arranged on
request for specific projects, subject to the producing mill’s current approval status for
your alloy, temper and thickness. Confirmed in writing before any order is committed.
HolderThe producing millNamed on the certificate issued for each order
Reference rulesDNV rules for classificationDNV-RU-SHIP Pt.2 Ch.4 and equivalent marine rule sets
ValidityApproval currently activeRenewed on the standard cycle · status confirmed before each order
Per-shipment issuance
One certificate, one batch
DNV approval identifier and the producing mill name appear on the MTC issued for your own order — every shipment
From your spec sheet to verified plate — three checkpoints
1
Before firm offer
Approval check
Confirm the mill’s approval is current for your exact grade, temper and thickness, and
covers the society your project is specified against.
→ Send your spec sheet at enquiry stage. Quote is conditional until approval
status is matched.
status is matched.
← We confirm the approval is current for your alloy, temper and thickness, and quote the
arranged-on-request terms for any other society named in your spec.
arranged-on-request terms for any other society named in your spec.
2
Before production starts
MTC preview & preview sample
Match the certificate format and a recent MTC to your spec, so your QC has the picture
before we cut plate.
→ Approve the format and note any extras (Charpy, UT, surface roughness).
← We confirm the MTC layout and a representative recent MTC for your alloy and temper,
plus a 200 × 300 mm preview plate on request (paid sample, refundable against PO).
plus a 200 × 300 mm preview plate on request (paid sample, refundable against PO).
3
Before plate ships
Witness & inspection
Surveyor witness at the mill (for 3.2) and pre-shipment inspection — by DNV, ABS, BV,
SGS or your nominated inspector.
→ Nominate the inspector and inspection scope (visual / dimensional / mark /
test witnessing).
test witnessing).
← We coordinate the inspection window, share the witness schedule, and ship
only after a signed release.
only after a signed release.
About the mill name on certificates. An MTC is issued by the producing mill, not by
us — that’s the format class surveyors expect. We supply the order acknowledgment, packing
list, certificate of origin and commercial invoice under our name. The mill name, address and
approval identifier appear on the certificate issued for your own order — one certificate per
batch, witnessed by the classification society acting as independent third party.
us — that’s the format class surveyors expect. We supply the order acknowledgment, packing
list, certificate of origin and commercial invoice under our name. The mill name, address and
approval identifier appear on the certificate issued for your own order — one certificate per
batch, witnessed by the classification society acting as independent third party.
Tell us the grade, size and quantity — we will take it from there.
Clearer answers are faster. Anything you already know helps.
- Grade & temper (e.g. 5083-H116)
- Thickness × width × length (mm)
- Quantity (tonnes or plate count)
- Classification society your project is specified under
- Delivery port & destination country
- DNV-witnessed (3.2) yes / no
- Tolerance standard ASTM B928 or tighter
- Inspection scope if not standard mill release
Email
info@aymetals.com — RFQ goes to the marine team’s inbox first.
WhatsApp
+86 133 0570 9557 — fastest for short technical questions and quick size checks.
