Placa de aluminiu 5083 – Shipbuilding & Marine Grade Al-Mg Alloy Plate

Product Overview

Placa de aluminiu 5083 is a high-strength aluminum-magnesium (Al-Mg) alloy from the 5000 series, 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, ÎN 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.

Compoziție chimică (%), GB/T 3190 & ASTM B209

Al (Aluminiu): 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
Si (Silicon): 0.40 max
Fe (Iron): 0.40 max
Cu (Cupru): 0.10 max
De (Titanium): 0.15 max
Others Each: 0.05 max, Others Total: 0.15 max

Mechanical Properties (Typical Values)

Temper O (Annealed): Tensile Strength 275-350 MPa, Yield Strength 125-200 MPa, Elongation 16-25%
Temper H116 (Strain Hardened, Marine): Tensile Strength 290-365 MPa, Yield Strength 200-285 MPa, Elongation 12-16%
Temper H321 (Strain Hardened & Stabilized): Tensile Strength 290-365 MPa, Yield Strength 200-285 MPa, Elongation 12-16%
Temper H112 (As Fabricated): Tensile Strength 275-350 MPa, Yield Strength 125-200 MPa, Elongation 12-16%
Hardness: 60-75 HB (H116/H321)
Fatigue Strength: 160 MPa (H116, at 5×10⁸ cycles)
Shear Strength: 170-180 MPa
Impact Toughness: Excellent down to -196°C (cryogenic applications)

Physical Properties

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

Specifications

Standards: ASTM B209, GB/T 3880, GB/T 3190, ÎN 485, JIS H4000, ABS / DNV / GL / LR / CCS marine class approvals
Grosime: 1.0 mm – 200 mm (0.04″ – 8″)
Lăţime: 500 mm – 3200 mm (custom slitting available)
Lungime: 500 mm – 16000 mm (custom cutting available)
Temper: O, H116, H321, H112
Surface Finish: Mill finish, Bright, Diamond tread (checkered), Coated
Toleranţă: Grosime: ±0.05mm (thin) to ±0.5mm (thick), Width/Length: ±1mm, Flatness: per ASTM B209
Margine: Sheared edge, sawn edge, or as per requirement
Class Certification: ABS / DNV / GL / LR / CCS certificates available on request

Key Features & Avantaje

• 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
• Lightweight – 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

Applications

• 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
• Constructii – poduri, 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

Ambalare & Transport

Ambalare: 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: Alloy, temper, dimensiune, heat number, standard, class approval stamp, manufacturer logo
Trade Terms: Fob, CIF, CFR, EXW, DDP
Plată: T/T (30% deposit, 70% before shipment), L/C at sight, Western Union, PayPal (sample orders)
Perioada de graţie: Standard sizes in stock – 3-7 zile; Custom sizes – 15-30 zile
MOQ: 1 ton for standard sizes; custom orders negotiable
Loading Port: Qingdao, Shanghai, Tianjin, Ningbo, or as requested

De ce să ne alegeți

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 țări. 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!