Qingdao Jero Steel Co., Ltd.
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Product Specification
| High Light | Metro Flooring AA5083 Aluminum Alloy ，AA5083 Aluminum Alloy ，5000 Series Aluminum Alloy Sheet | ||
5000 Series Corrosion Resistance AA5083 Aluminum Alloy For Metro Flooring
5083 aluminum sheet belongs to Al-Mg series alloy. It is the highest strength corrosion-resistant
alloy among practical non-heat-treated alloys. And it is suitable for welding structures. Also, it is
worth mentioning that 5083 aluminum sheet has good resistance to seawater and low-temperature
characteristics.
5083 aluminum (H116/H321 preferred) is the material of choice for metro flooring due to its lightweight,
high strength, and lifecycle economy.
Standard Thickness Specifications
♦ Standard flooring: 3-5mm (lightweight structural requirements)
♦ High-load areas: 5-8mm (doorways/passenger concentration zones)
♦ Special reinforcement: 8-12mm (under seating/equipment mounting points)
| Temper | Processing | Mechanical Properties | Applications |
| H111 | Hot-rolled + annealed | Tensile ≥270 MPa, Elong. ≥12% | Complex-shaped floor components |
| H112 | Hot-rolled + natural aging | Tensile ≥275 MPa, Yield ≥125 MPa | Standard flat panels (cost-effective) |
| H116 | Special stabilization | Tensile ≥290 MPa, Yield ≥215 MPa | High-traffic areas (wear-resistant) |
| H321 | TMCP treatment | Tensile ≥310 MPa, Yield ≥230 MPa | High-strength zones (e.g., articulated sections) |
Performance Advantages
1) Structural Benefits
✓ 40% weight reduction vs. steel flooring
✓ Tensile strength: 275-350 MPa (H34 temper)
✓ Fatigue resistance exceeds 10⁷ cycles at 80MPa
2) Safety Features
• Non-sparking characteristics (essential for underground transport)
• Fire performance meets DIN 5510-2 Class S4/SR2
• Excellent impact energy absorption (50J at -20°C)
3) Maintenance Advantages
▶ 30-year service life expectancy
▶ Corrosion-resistant in humid underground environments
▶ Minimal lifecycle maintenance requirements
Comparison with Alternative Alloys
| Alloy | Pros | Cons | Typical Uses |
| 5083 | Best corrosion resistance, weldable | Not heat-treatable | Tankers, ships, chemical tanks |
| 6061-T6 | Higher strength (310 MPa) | Poor corrosion resistance, requires pre-heat welding | Structural frames, non-corrosive parts |
| 5052 | Lower cost, excellent formability | Lower strength (210 MPa) | Lightweight covers, interior panels |
Current Applications
• Berlin U5 Line (Germany)
5083-H111 one-piece curved flooring (60% fewer seams)
• Shanghai Metro Line 14 trainsets
5083-H116 flooring (3.0 mm), 1.8-ton weight reduction per train
Surface: Anodized + anti-slip granules (friction coefficient ≥0.8)
• Singapore Circle Line MRT vehicles
5083-H321 honeycomb sandwich panels (1.5 mm face + 15 mm core)
Key design considerations:
✅ Anti-slip treatment (e.g., electrolytic polishing/ceramic coating)
✅ Electrical insulation (to prevent galvanic corrosion)
✅ Compliance with EN 45545-2/BS 6853 fire standards
Company Advantages
1) Full sets of imported vertical intelligent storage and logistic management system, and finishing
lines which fulfill all the requirements on various kinds of Aluminium plate,sheet and strip products.
2) We have has built up on the basis of outstanding management and complete quality control system
under its rich experiences and has got many kinds of quality management certificates such as ISO90
-01:2015, ISO14001:2015,ISO45001:2018,IATF16949:2016,AS9100D,ISO/TS22163:2017, and has
passed ABS,CCS, DNVGL,LR,NK,KR etc.proof from National Classification Society.
3) We take social responsibility and regards environment protection as main task for long-term develop
-ment. It is featured with pulse-type bag dedust system from NEDERMAN Germany,which emission
index of main exhaust stuff and particles are lower than national criteria.
Our factory own the world advanced equipments, include:
| Code | Name | Brand |
| 1 | aluminum ignot melting furnace | GAUTSCHI (Switzerland) |
| 2 | 2800mm width single stand cold rolling mill | SMS Group (Germany) |
| 3 | 4 continuous hot rolling mills | SMS Group (Germany) |
| 4 | all automatic three-dimensional elevated warehouse | Dematic (USA) |
Company Details
Business Type:
Manufacturer,Trading Company
Year Established:
2017
Total Annual:
6000000-8000000
Employee Number:
40~50
Ecer Certification：
Verified Supplier
Qingdao Jero steel company is a professional raw material integrated supplier, located in the beautiful costal city, Qingdao, mainly product is steel material and Aluminum alloy sheet/coil. We own a very comfortable work environment, and humanized management system, we hope that a job&nbs... Qingdao Jero steel company is a professional raw material integrated supplier, located in the beautiful costal city, Qingdao, mainly product is steel material and Aluminum alloy sheet/coil. We own a very comfortable work environment, and humanized management system, we hope that a job&nbs...
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