Piastra in alluminio 5083 – Shipbuilding & Marine Grade Al-Mg Alloy Plate

Product Overview

Piastra in alluminio 5083 is a high-strength aluminum-magnesium (Al-Mg) alloy from the 5000 serie, specifically developed for marine and shipbuilding applications. It delivers the highest strength among the non-heat-treatable aluminum alloys, combined with exceptional corrosion resistance in seawater, excellent weldability, and outstanding low-temperature toughness. Our 5083 aluminum plates are produced per ASTM B209, GB/T 3880, IN 485 and ABS/DNV/GL/LR marine class rules, available in O, H116, H321 and H112 tempers, with custom sizes, certified for shipbuilding, offshore platforms, pressure vessels and cryogenic applications.

Composizione chimica (%), GB/T 3190 & ASTM B209

Al (Alluminio): 92.4 – 95.6 (balance)
Mg (Magnesium): 4.0 – 4.9 (principal alloying element)
Mn (Manganese): 0.40 – 1.0
Cr (Chromium): 0.05 – 0.25
Zn (Zinc): 0.25 max
E (Silicon): 0.40 max
Fe (Ferro): 0.40 max
Cu (Rame): 0.10 max
Di (Titanium): 0.15 max
Others Each: 0.05 max, Others Total: 0.15 max

Proprietà meccaniche (Typical Values)

Temper O (Annealed): Resistenza alla trazione 275-350 MPa, Forza di snervamento 125-200 MPa, Allungamento 16-25%
Temper H116 (Strain Hardened, Marino): Resistenza alla trazione 290-365 MPa, Forza di snervamento 200-285 MPa, Allungamento 12-16%
Temper H321 (Strain Hardened & Stabilized): Resistenza alla trazione 290-365 MPa, Forza di snervamento 200-285 MPa, Allungamento 12-16%
Temper H112 (As Fabricated): Resistenza alla trazione 275-350 MPa, Forza di snervamento 125-200 MPa, Allungamento 12-16%
Durezza: 60-75 HB (H116/H321)
Forza della fatica: 160 MPa (H116, at 5×10⁸ cycles)
Resistenza al taglio: 170-180 MPa
Impact Toughness: Excellent down to -196°C (cryogenic applications)

Proprietà fisiche

Densità: 2.66 g/cm³ (0.096 lb/in³)
Melting Point: 570-640° C. (1060-1185° f)
Conduttività termica: 121 W/(m·K) at 25°C
Conduttività elettrica: 29% IACS (annealed)
Electrical Resistivity: 5.9 × 10⁻⁸ Ω·m
Thermal Expansion Coefficient: 24.0 × 10⁻⁶/K (20-100° C.)
Modulo di elasticità: 71 GPa (10,300 ksi)
Modulus of Rigidity: 26.4 GPa
Poisson Ratio: 0.33

Specifications

Standard: ASTM B209, GB/T 3880, GB/T 3190, IN 485, HE H4000, ABS / DNV / GL / LR / CCS marine class approvals
Spessore: 1.0 mm – 200 mm (0.04″ – 8″)
Larghezza: 500 mm – 3200 mm (custom slitting available)
Lunghezza: 500 mm – 16000 mm (custom cutting available)
Temperare: O, H116, H321, H112
Finitura superficiale: Finitura al mulino, Luminoso, Diamond tread (a scacchi), Coated
Tolerance: Spessore: ±0.05mm (thin) to ±0.5mm (thick), Width/Length: ±1mm, Flatness: per ASTM B209
Edge: Sheared edge, sawn edge, or as per requirement
Class Certification: ABS / DNV / GL / LR / CCS certificates available on request

Caratteristiche principali & Vantaggi

• Highest strength among non-heat-treatable aluminum alloys
• Exceptional seawater corrosion resistance – ideal for marine environments
• Outstanding weldability – retains strength in the weld zone after welding
• Excellent low-temperature toughness – suitable for cryogenic applications down to -196°C
• Marine class certified – ABS, DNV, GL, LR, CCS approvals available
• High fatigue resistance – excellent for repeated loading structures
• Good formability and machinability in all tempers
• Leggero – one-third the weight of steel, reducing vessel weight and fuel consumption
• Stress corrosion cracking resistant – excellent performance in seawater
• Long service life with minimal maintenance in marine environments

Applicazioni

• Shipbuilding – hull plates, decks, bulkheads, superstructures, hatch covers
• Offshore platforms – topside structures, decks, helidecks, walkways
• Marine vessels – fishing boats, yachts, workboats, patrol boats, ferries
• Pressure vessels – LNG tanks, cryogenic storage tanks, air receivers
• Rail transport – rail car bodies, tanks, structural components
• Road transport – truck bodies, tankers, trailers, dump bodies
• Chemical and petrochemical – storage tanks, piping, processing equipment
• Desalination plants – evaporators, condensers, piping
• Costruzione – ponti, structural frames, heavy-duty platforms
• Sports and recreation – diving boards, boat trailers, stadium structures
• Cryogenic engineering – storage and transport of liquefied gases

Quality Control & Testing

Every batch of our 5083 aluminum plates undergoes strict quality control:

Chemical Analysis: Spectrometer verification of magnesium and manganese content
Mechanical Testing: Tensile test, yield strength test, elongation test, hardness test (per temper)
Marine Grade Testing: Intergranular corrosion test, exfoliation corrosion test, stress corrosion cracking test (per ASTM G67, G66)
Low-Temperature Testing: Charpy impact test at low temperatures for cryogenic certification
Ultrasonic Testing: UT inspection for internal soundness (available on request)
Surface Inspection: Visual inspection for scratches, pits, oxide stains, and roll marks
Flatness Check: Flatness tolerance per ASTM B209 / GB/T 3880
Documentation: Mill Test Certificate (MTC), marine class certificate (ABS/DNV/GL/LR/CCS), material traceability

Confezione & Spedizione

Confezione: Standard export packaging – plates stacked with protective paper between sheets, wrapped in waterproof kraft paper and plastic film, wooden pallets or crates, steel strapping, corner protection; protective film on request
Marking: Lega, temperare, size, heat number, standard, class approval stamp, manufacturer logo
Trade Terms: FOB, CIF, CFR, EXW, DDP
Payment: T/T (30% deposit, 70% prima della spedizione), L/C at sight, Western Union, PayPal (sample orders)
Tempi di consegna: Standard sizes in stock – 3-7 giorni; Custom sizes – 15-30 giorni
MOQ: 1 ton for standard sizes; custom orders negotiable
Loading Port: Qingdao, Shanghai, Tianjin, Ningbo, or as requested

Perché scegliere noi

With over 15 years of experience in aluminum manufacturing and export, we are a trusted supplier of 5083 aluminum plates to shipyards, offshore engineering companies, and pressure vessel manufacturers in more than 50 countries. Our factory is approved by major classification societies, ensuring compliance with international marine standards. We maintain large inventory of standard sizes and tempers for immediate delivery, and our experienced team can provide technical consultation, class documentation support, and customized solutions for your specific applications. Contact us today for a competitive quote!