What is 1050 Aluminum
1050 aluminum is a high-purity aluminum
material with excellent electrical conductivity, thermal conductivity,
corrosion resistance, and ductility. It is widely used in chemical equipment,
food processing, heat exchangers, fuel tanks, and other applications requiring
corrosion resistance and conductivity.
Equivalent Names
Standard
UNS
France (NF)
Germany (DIN)
US (AA)
UK (BS)
Canada (CSA)
ASTM
Other
Equivalent
A91050
NF
A5
DIN
Al99.5
AA1050-O
BS
1B
CSA
9950
ASTM
B491
Al1050-O
Worthwill’s 1050 Aluminum Specifications
Product Type
Specification
Details
General Information
Alloy
1050
Temper
O, H12, H14, H16, H18, H24, H26, H28
Types
Sheet, Strip and Coil, Circle and Disc
1050 Aluminum Sheet
Thickness
0.2mm - 260mm
Sheet: 0.2mm-6mm
Plate: 6mm-80mm
Extra-Thick Plate: 80mm-260mm
Width
500mm - 2650mm (standard: 1000/1250/1500/2000mm)
Length
Customized (standard: 2000/2500/3000/6000mm)
1050 Aluminum Strip
Thickness
0.08mm - 3.0mm
Ultra-Thin Strip: 0.08mm-0.5mm
Standard Strip: 0.5mm-3.0mm
Width
10mm - 600mm (tolerance: ±0.1mm)
Coil Weight
500kg - 3000kg (inner diameter: 150/300/505mm)
Slitting Precision
Width tolerance ±0.1mm (<300mm), ±0.2mm (≥300mm)
1050 Aluminum Coil
Thickness
0.1mm - 6mm
Thin Coil: 0.1mm-1.0mm
Thick Coil: 1.0mm-6mm
Width
100mm - 2000mm (slitting tolerance: ±0.2mm)
Coil Diameter
Outer diameter 600mm-2000mm (inner diameter: 508/610mm)
Physical and Chemical Properties
Basic Physical Properties
Property
Value Range
Testing Standard
Density
2.71
g/cm³
ASTM
B209
Melting
Point
640-660℃
ISO
209-1
Thermal
Expansion
24×10⁻⁶/K (20-100℃)
EN
485
Elastic
Modulus
71
GPa
DIN
50125
Thermal
Conductivity
222
W/(m·K)
ASTM
E1461
Electrical
Conductivity
61%
IACS
IEC
60034-18-34
Chemical Composition (ASTM B209)
Element
Content (wt%)
Impurity Control Requirements
Al
≥99.5
Purity
assurance
Fe
≤0.40
Inhibit
grain boundary brittleness
Si
≤0.25
Flow
control
Cu
≤0.05
Critical
for corrosion resistance
Mn
≤0.05
Affects
work hardening
Mechanical Properties
Temper
Process Path
Tensile Strength (MPa)
Yield Strength (MPa)
Elongation (%)
Vickers Hardness
O
Fully
Annealed
65-95
25-40
≥35
25-30
H12
Cold
Rolled + 1/4 Hardened
85-125
70-95
12-18
45-50
H14
Cold
Rolled + 1/2 Hardened
105-145
95-115
10-12
50-55
H16
Cold
Rolled + 3/4 Hardened
120-160
110-130
8-10
60-65
H18
Fully
Hardened
≥140
≥125
≤5
70-75
H112
Hot
Rolled
70-100
50-70
≥20
35-40
Welding Performance
Method
Applicable Thickness (mm)
Heat Input Control
Defect Prevention
TIG
Welding
0.5-6.0
80-150A
DCEN
Argon
purity ≥99.99%
MIG
Welding
3.0-25.0
18-24V
Preheating
at 100-150℃
Resistance
Spot Welding
0.5-3.0
8-12kA
Optimize
electrode pressure
Laser
Welding
0.2-8.0
2-6kW
Defocus
±0.2mm
Property Changes with Temper
Parameter
O Temper
H18 Temper
Change Rate
Conductivity
(%IACS)
61
58
↓5%
Thermal
Conductivity (W/m·K)
222
210
↓5.4%
Thermal
Expansion (×10⁻⁶/K)
24
23.5
↓2.1%
Magnetic
Permeability (μH/m)
1.0
1.05
↑5%
Standard Products
1050 Aluminum Sheet
Thickness: 0.2mm- 260mm.
Processing: Laser/Waterjet Cutting.
Applications: Architectural cladding, chemical containers.
1050 Aluminum Coil
Thickness: 0.1mm - 6.0mm.
Processing: Continuous stamping.
Applications: Food packaging, electronic components.
1050 Aluminum Strip
Thickness: 0.1mm - 6mm.
Processing: Slitting.
Applications: Lamp reflectors, channel letters.
1050 vs 1060 vs 3003 Aluminum
Parameter
1050
1060
3003
Al
Content (%)
99.50
99.60
96.80
Typical
Mn (%)
0.05
0.03
1.20
Conductivity
(%IACS)
61
62
45
Seawater
Corrosion Resistance
Grade
B
Grade
B
Grade
A
Deep
Drawing Limit (LDR)
2.0
2.1
1.8
Typical
Applications
Electrolytic
containers
Capacitor
foil
Fuel
tank shells
Surface Treatments
Anodizing
Film Thickness: 10μm-25μm.
Standards: MIL-A-8625.
Performance: Salt spray resistance ≥1000h.
Stucco Embossed Finish
Pattern Depth: 0.3mm-1.2mm.
Standards: EN 1386.
Mirror Finish
Surface Roughness: Ra ≤0.1μm.
Standards: ASTM B666.
PVDF Coating
Film Thickness: ≥25μm.
Standards: QUALICOAT, ASTM D2244.
Powder Coating
Film Thickness: 60μm-80μm.
Standards: AAMA 2604.
Brushed Finish
Patterns: Linear, threaded.
Applications
Electrical Equipment
Busbars (Conductivity >58 MS/m):
Temper: H112
Thickness: 6.0mm-12.5mm
Conductivity: ≥60% IACS
Heat Exchanger Fins:
Temper: H14
Dimensions: Thickness 0.2mm-0.5mm,
fin height 10mm-15mm, spacing 2mm-3mm
Features: High thermal
conductivity, corrosion resistance, excellent deep-drawing
Chemical Containers
Acid/Alkali Tank Liners:
Temper: H14/H112
Thickness: 3.0mm-6.0mm
Properties: Natural oxide film
resists pH 2-12, PTFE coating (50-80μm)
Reactor Seals:
Temper: O
Thickness: 0.5mm-2.0mm
Features: Low impurities (Fe/Si
≤0.4%), mirror finish (Ra ≤0.1μm)
Architectural Decoration
Composite Cladding Panels (ASTM
B209):
Temper: H14
Thickness: 1.5mm-4.0mm
Features: Wind resistance +
anodized aesthetics
Anti-Slip Patterned Sheets:
Temper: O, H12, H14
Pattern Height: 0.5mm-1.2mm
Packaging Materials
Food-Grade Foil (Thickness
0.006-0.2mm):
Temper: O
Certifications: FDA-compliant
Pharmaceutical Blister Packaging:
Thickness: 0.02mm-0.06mm
Certifications: FDA/EMA
Processing Technology
1050 aluminum undergoes multiple processes,
including slab casting, annealing, rolling, and tension leveling. Key
parameters:
Annealing: 350-430℃ × 2h, cooling
rate <30℃/h
Cold Working:
Process
Deformation Rate
Springback Compensation
Die Clearance
Deep
Drawing
25-35%
1.2-1.5
1.05t
Spinning
30-40%
1.3-1.7
1.1t
Bending
15-25%
1.1-1.3
0.95t
Chemical Conversion Treatment
Chromate conversion coating: pH 1.8-2.2, temperature 40℃, time
3-5min.
Chrome-free conversion coating: Zirconium-titanium system,
coating weight 200-400mg/m².
Laser Cutting Parameters
Thickness (mm)
Power (W)
Speed (m/min)
Gas
0.5
1000
8
N₂ 15Bar
3.0
4000
2.5
O₂ 5Bar
6.0
6000
1.2
Compressed
Air
Quality Control
Worthwill ensures
Raw material purity compliance (chemical composition and
physical properties).
Strict control of casting, rolling, stamping, and annealing
processes.
Final inspections for appearance, dimensions, mechanical
properties, and corrosion resistance.
Testing Standards
Dimensional Tolerance: EN 485-2
Class B
Mechanical Testing: ASTM E8/E18
Metallography: ASTM E3/E407
Common Defects
Defect
Cause
Solution
Snowflake
Patterns
Residual
rolling oil
Enhanced
degreasing
Edge
Warping
Slitting
stress
24h
aging treatment
Color
Banding
Uneven
annealing
Upgrade
furnace design
Special Specifications
Parameter
Control Standard
Testing Method
Special Requirements
Flatness
Tolerance
≤0.3mm/m
Laser
Flatness Tester
Segmented
inspection for wide plates
Edge
Burr
≤0.02mm
Electron
Microscope
Electrolytic
polishing for medical-grade products
Grain
Size
Grade
5-7 (GB/T 6394)
Metallographic
Analysis
≥Grade
6 for aerospace parts
Residual
Stress
≤50MPa
X-ray
Diffraction
<30MPa
for precision parts
Conductivity
Uniformity
Surface
resistance difference ≤5%
Four-Probe
Method
Mandatory
for electrode materials
Selection Guide
Application
Recommended Temper
Key Considerations
Deep-Drawn
Containers
H24/H14
Prioritize
ductility
Architectural
Cladding
H16/H18
Prioritize
strength
Electrical
Conductors
O
Maximize
conductivity
Cost-Sensitive
Projects
H12
Balance
formability and cost
Case Studies
Lithium Battery Casing (Puncture
Resistance):
Alloy: 1050
Thickness: 0.5mm
Temper: H24
PV Frame (Weather Resistance):
Alloy: 1050
Thickness: 1.2mm
Temper: H16
Inventory (1050 Aluminum Sheet and Plate)
Item
Thickness
Size
Standard
Action
1050
H14/H24 Aluminum Sheet
0.5
mm (0.020")
1500×3020
mm (48"×144")
EN485,
ASTM B209
Add to cart
1050
H14 Aluminum Sheet
0.020"
(0.5 mm)
48"×144"
(1500×3020 mm)
EN485,
ASTM B209
Add to cart
1050
H14/H24 Aluminum Sheet
0.7
mm (0.028")
1500×3020
mm (48"×144")
EN485,
ASTM B209
Add to cart
1050
H14 Aluminum Sheet
0.028"
(0.7 mm)
48"×144"
(1500×3020 mm)
EN485,
ASTM B209
Add to cart
1050
H14/H24 Aluminum Sheet
0.8
mm (0.031")
1500×3020
mm (48"×144")
EN485,
ASTM B209
Add to cart
1050
H14 Aluminum Sheet
0.031"
(0.8 mm)
48"×144"
(1500×3020 mm)
EN485,
ASTM B209
Add to cart
1050
H14/H24 Aluminum Sheet
0.9
mm (0.035")
1500×3020
mm (48"×144")
EN485,
ASTM B209
Add to cart
1050
H14 Aluminum Sheet
0.035"
(0.9 mm)
48"×144"
(1500×3020 mm)
EN485,
ASTM B209
Add to cart
1050
H14/H24 Aluminum Plate
1
mm (0.039")
1500×3020
mm (48"×144")
EN485,
ASTM B209
Add to cart
1050
H14 Aluminum Sheet
0.039"
(1 mm)
48"×144"
(1500×3020 mm)
EN485,
ASTM B209
Add to cart
Packaging & Shipping
Moisture-Proof: PE film + silica
gel desiccant (<30% RH)
Transport Protection: Steel
strapping + edge guards + fumigated pallets (EN 10204 3.1 certified)
