1070 알루미늄 합금

What Is 1070 Aluminum Alloy?

1070 aluminum alloy (UNS A91070, EN AW-1070A / Al99.7) is a commercially pure aluminum grade containing at least 99.7% aluminum, making it one of the highest-purity grades in the 1000 series. Since its primary constituent is aluminum with only trace amounts of other elements, 1070 cannot be strengthened by heat treatment — instead, strength improvements are achieved through cold working (strain hardening).

With electrical conductivity reaching approximately 62% IACS in the annealed (O) temper and outstanding corrosion resistance in atmospheric, freshwater, and most chemical environments, 1070 aluminum is the material of choice for electrical conductors, chemical process equipment, heat exchangers, and applications where purity and conductivity take priority over mechanical strength. It also exhibits excellent formability, making it ideal for deep drawing, stamping, spinning, and roll-bonding operations.

1070 aluminum is supplied under international standards including ASTM B209 (sheet & plate), ASTM B210 (drawn seamless tube), ASTM B211 (bar, rod & wire), ISO 6361-2, and EN 573-3.

Available 1070 Aluminum Products

Linsy supplies 1070 aluminum in the standard product forms listed below. Length, width, and dimensional tolerances can be customized to your project requirements. For non-standard sizes or tempers, contact us for a custom quotation with a typical lead time of 10–60 days.

1070 Aluminum Sheet & Coil

양식	성질	두께(mm)	너비(mm)	길이(mm)
1070 Sheet / Coil	O, H12, H14, H16, H18, H112	0.3 – 6.0	500 – 2600	500 – 16000

1070 Aluminum Plate

양식	성질	두께(mm)	너비(mm)	길이(mm)
1070 Plate	O, H112	6.0 – 100	500 – 2600	500 – 12000

1070 Aluminum Bar

양식	성질	지름(mm)	길이(mm)
1070 Bar	O, H12, H14, H16, H18, H112	3 – 300	1000 – 6000

1070 Aluminum Tube

양식	성질	외경(mm)	벽 두께 (mm)	길이(mm)
1070 Tube	O, H12, H14, H16, H18, H112	6 – 300	1 – 50	1000 – 6000

1070 Aluminum Wire

양식	성질	지름(mm)	중량 / 코일
1070 Wire	O, H12, H14, H16, H18	0.8 – 30	최소 50kg

Dimensions can be customized. Contact us for your specific requirements.

1070 Aluminum Specifications & Equivalent Designations

표준	명칭
UNS	A91070
EN (European)	EN AW-1070A / Al99.7
AA (알루미늄 협회)	1070
JIS (Japanese)	A1070
ISO	Al 99.7
GB (Chinese)	1070

적용 표준

Product Form	ASTM	EN / ISO
시트 및 플레이트	ASTM B209	EN 573-3, ISO 6361-2
Bar, Rod & Wire	ASTM B211	EN 573-3, ISO 6361-2
Drawn Seamless Tube	ASTM B210	EN 573-3, ISO 6361-2
Extruded Products	ASTM B221	EN 755-2

Chemical Composition of 1070 Aluminum

요소	최소(%)	최대(%)
알루미늄(Al)	99.70	—
Silicon + Iron (Si + Fe)	—	0.20
실리콘(Si)	—	0.20
철(Fe)	—	0.25
구리(Cu)	—	0.04
망간(Mn)	—	0.03
마그네슘(Mg)	—	0.03
아연(Zn)	—	0.07
티타늄(Ti)	—	0.03
바나듐(V)	—	0.05
Others (Each)	—	0.03

Composition per EN 573-3. Single element values are maximum unless a range is shown. Aluminum percentage is the balance.

Mechanical Properties of 1070 Aluminum by Temper

As a non-heat-treatable alloy, 1070 aluminum gains strength exclusively through cold working. The table below shows the mechanical property ranges for each commonly supplied temper.

Temper O (Annealed)

속성	가치
인장 강도	60 – 90 MPa
수율 강도	≥ 20 MPa
신장	≥ 25%
경도(브리넬)	~19 HB
전기 전도성	~62% IACS

Temper H12 (Strain-Hardened, 1/4 Hard)

속성	가치
인장 강도	80 – 120 MPa
수율 강도	≥ 55 MPa
신장	≥ 6%

Temper H14 (Strain-Hardened, 1/2 Hard)

속성	가치
인장 강도	95 – 135 MPa
수율 강도	≥ 70 MPa
신장	≥ 5%

Temper H16 (Strain-Hardened, 3/4 Hard)

속성	가치
인장 강도	110 – 155 MPa
수율 강도	≥ 90 MPa
신장	≥ 3%

Temper H18 (Strain-Hardened, Full Hard)

속성	가치
인장 강도	≥ 150 MPa
수율 강도	≥ 120 MPa
신장	≥ 2%

Values are typical for sheet/plate products per ASTM B209 / EN 485-2. Actual properties depend on product form and thickness. Contact us for lot-specific test certifications.

1070 Aluminum Temper Selection Guide

성질	상태	주요 이점	일반적인 사용
O(어닐링)	Fully annealed, softest condition	Maximum formability + highest conductivity	Deep drawing, spinning, chemical equipment, gaskets
H12	변형 경화 처리된, 1/4 경도	Moderate strength with good formability	General sheet metal, panels, light structural
H14	변형 경화 처리된, 1/2 경도	Balanced strength and ductility	Bus bars, electrical enclosures, signage
H16	변형 경화 처리된, 3/4 경도	강도는 높으나 성형성이 제한적	Electrical conductors, terminals, stamped parts
H18	변형 경화, 완전 경화	Maximum strength for this alloy	Flat washers, clips, wire products, thin strip
H112	제조 직후 상태 (특별한 변형 경화 제어 없음)	Standard strength for extruded/plate products	General plate, bar and tube applications

참고: Unlike 6000 and 7000 series alloys, 1070 cannot be strengthened by heat treatment. Designers specifying 1070 should select the appropriate work-hardened temper based on the required combination of strength, ductility, and conductivity.

Key Characteristics of 1070 Aluminum

High Purity (Al ≥ 99.7%)

1070 is one of the highest-purity commercially available aluminum grades. Total impurity content is limited to a maximum of 0.30%, ensuring consistent electrical, thermal, and chemical performance. This purity level makes 1070 suitable for applications where contamination must be minimized, including food processing equipment, pharmaceutical packaging, and reflective surfaces.

Superior Electrical Conductivity

In the annealed (O) temper, 1070 aluminum achieves approximately 62% IACS (International Annealed Copper Standard) conductivity — among the highest of any aluminum grade. This makes it a cost-effective and lightweight alternative to copper in electrical bus bars, transformer windings, power cables, and grounding applications where weight savings matter.

뛰어난 내식성

1070 aluminum forms a natural, self-healing oxide layer that provides strong resistance to atmospheric corrosion, freshwater, and most neutral chemical environments. It performs well in architectural, chemical processing, and general industrial settings without requiring additional protective coatings, though anodizing can further enhance surface durability and aesthetics.

Outstanding Formability

In the O and lightly work-hardened tempers, 1070 exhibits exceptional cold formability, making it ideal for deep drawing, stamping, roll bonding, spinning, and impact extrusion. It can be formed into complex shapes with minimal risk of cracking, which is why it is widely used for capacitor foil, heat exchanger fins, and consumer product packaging.

용접성

1070 aluminum has good weldability using TIG (GTAW), MIG (GMAW), and resistance welding processes. Because 1070 is a non-heat-treatable alloy, the heat-affected zone does not lose strength from over-aging, though it may soften from annealing. For applications requiring post-weld strength in the joint area, filler metal selection and process control should be evaluated.

Common Applications of 1070 Aluminum

산업	일반적인 애플리케이션	Why 1070
Electrical & Power	Bus bars, transformer windings, power cables, conductor wire, capacitor foil	High electrical conductivity (62% IACS), lightweight alternative to copper
화학 처리	Storage tanks, reaction vessels, heat exchangers, piping	Excellent corrosion resistance, high purity, no contamination risk
Heat Exchange & HVAC	Radiator fins, evaporator coils, condenser tubes, heat sinks	High thermal conductivity, good formability for fin manufacturing
포장	Aluminum foil, food containers, pharmaceutical blister packs, bottle caps	High purity, non-toxic, excellent deep-drawing and rolling characteristics
Construction & Architecture	Roofing sheet, flashing, wall cladding, decorative trim	Corrosion resistance, lightweight, good formability for profiling
일반 제조	Gaskets, washers, clips, stamped components, nameplates, reflective sheeting	Good formability at low cost, widely available in sheet and strip forms

가공 및 표면 마감 참고 사항

Linsy provides the following processing and surface treatment services for 1070 aluminum:

Processing Support

프로세스	설명	Notes for 1070
CNC Machining	Precision cutting, drilling, milling of bar, plate and custom blanks	1070 is soft and gummy — use sharp tooling, high rake angles, and proper lubrication
Laser Cutting	High-precision profile cutting for sheet and plate	Suitable for 1070 up to moderate thicknesses; reflective surface may require fiber laser settings
Stamping & Deep Drawing	Forming complex shapes from sheet and coil	Excellent formability in O and H12/H14 tempers; ideal for deep-drawn components
TIG / MIG Welding	Gas tungsten arc and gas metal arc welding	Good weldability; use 1070 or 1100 filler for matching chemistry

표면 마감

완료	설명
아노다이징	Electrolytic oxide coating for enhanced corrosion resistance and aesthetics; 1070 produces a clear, bright anodic finish
Polishing	Mechanical or chemical polishing for reflective, decorative surfaces
Mill Finish	As-rolled or as-extruded surface, standard for structural and industrial applications
PVC Protective Film	Optional surface protection for sheet and plate during handling and fabrication

품질 문서 및 검사

Linsy maintains a documented quality control system covering the full production cycle — from raw material selection to finished product inspection. We provide the following quality documentation with your order:

Document	설명
MTC (Mill Test Certificate)	Issued for every order; includes chemical composition, mechanical properties, dimensions, and compliance to applicable standards
SGS Test Reports	Third-party chemical composition, mechanical properties, ultrasonic testing, RoHS & REACH, and dimensional inspection reports available on request
Certificate of Compliance	Confirms material compliance with specified ASTM, EN, or ISO standards
Dimensional Inspection Report	Batch-specific dimensional verification to specified tolerances

Our management system is certified to ISO 9001, ISO 14001, and ISO 45001.

Why Choose Linsy for 1070 Aluminum

Linsy Aluminum is a Shenzhen-based aluminum factory with over 20 years of industry experience. For 1070 aluminum buyers, Linsy offers distinct advantages:

• Broad 1070 inventory: We stock 1070 aluminum sheet, coil, bar, tube, and wire in multiple tempers (O, H12, H14, H16, H18, H112) across standard dimensions for faster order turnaround.
• Custom size and temper support: Non-standard dimensions, specific temper requirements, and special tolerance orders are produced with a typical lead time of 10–60 days.
• Low-MOQ flexibility: We accept mixed-spec, low-MOQ orders — suitable for project purchasing, trial batches, and buyers sourcing harder-to-find 1070 specifications.
• In-house processing: CNC machining, laser cutting, stamping, welding, anodizing, and polishing services reduce your multi-supplier coordination.
• Full traceability: Every order ships with an MTC. SGS third-party testing is available on request for additional verification.
• Global export experience: We regularly supply 1070 aluminum to customers in Europe, South Africa, Brazil, Singapore, Turkey, Japan, South Korea, and across Southeast Asia.

관련 자료

Supporting blog articles related to 1000-series aluminum and material selection will be added as relevant content becomes available. For now, contact our team directly for 1070-specific technical guidance and quotation.

1070 Aluminum FAQ

What is 1070 aluminum used for?

1070 aluminum is primarily used in electrical conductors, transformer windings, bus bars, capacitor foil, heat exchanger fins, chemical processing equipment, food packaging, and architectural sheet applications where high purity, electrical conductivity, and corrosion resistance are required instead of high mechanical strength.

Can 1070 aluminum be heat treated?

No. 1070 is a commercially pure, non-heat-treatable aluminum alloy in the 1000 series. Its strength can only be increased through cold working (strain hardening) — not through solution heat treatment or precipitation aging. Annealing restores full softness after cold working.

What is the difference between 1050 and 1070 aluminum?

Both are commercially pure 1000-series grades. 1050 (Al ≥ 99.50%) allows slightly more impurities, while 1070 (Al ≥ 99.70%) maintains higher purity. 1070 typically offers marginally higher electrical conductivity and corrosion resistance. For most industrial applications, 1050 is adequate; 1070 is preferred when maximum purity or conductivity is critical.

What is the electrical conductivity of 1070 aluminum?

In the annealed (O) temper, 1070 aluminum achieves approximately 62% IACS electrical conductivity. For comparison, 1070-H18 (full-hard temper) may drop slightly due to the dislocation density from cold working. This conductivity, combined with aluminum’s lower density (roughly one-third that of copper), makes 1070 an attractive weight-saving conductive material.

Is 1070 aluminum suitable for anodizing?

Yes. 1070 aluminum anodizes well and produces a clear, bright, transparent oxide layer due to its high purity and low alloy content. It is commonly used in decorative anodized applications where a uniform, high-gloss finish is required. For architectural anodizing, 1070 sheet can be specified with appropriate surface pretreatment.

Can 1070 aluminum be welded?

Yes. 1070 has good weldability using TIG (GTAW), MIG (GMAW), and resistance welding. As a non-heat-treatable grade, the heat-affected zone does not experience over-aging strength loss, though some softening due to annealing may occur. For matching filler metal, 1070 or 1100 filler wire is recommended.

Does 1070 aluminum rust?

No. Like all aluminum alloys, 1070 does not rust in the way iron and steel do. It forms a thin, transparent, self-healing aluminum oxide layer that protects the underlying metal. This provides excellent resistance to atmospheric corrosion, freshwater, and most neutral chemical environments. For highly acidic or alkaline exposure, additional protection or material selection should be evaluated.

Do you provide MTC and third-party testing for 1070 aluminum?

Yes. Every 1070 aluminum order from Linsy includes a Mill Test Certificate (MTC) documenting chemical composition, mechanical properties, and dimensional compliance. SGS third-party testing — including chemical analysis, mechanical testing, ultrasonic inspection, and RoHS/REACH reports — is available on request.

What is the minimum order quantity for 1070 aluminum?

Linsy supports low-MOQ orders across all 1070 aluminum product forms. Minimum quantities vary by product form and specification — contact our sales team with your requirements for a specific quotation.

What is the typical lead time for custom 1070 aluminum orders?

Custom production lead times typically range from 10 to 60 days, depending on the alloy, dimensions, temper, processing requirements, and order complexity. Stock items can ship sooner. Contact us with your specification for an accurate delivery estimate.

주문 관련 일반적인 자주 묻는 질문

Do you provide samples?

Yes, we provide samples for evaluation before bulk orders. Sample availability and shipping terms depend on the product form and specification. Contact our sales team to request samples.

What payment methods do you accept?

We accept T/T (wire transfer) and L/C (letter of credit). Payment terms are negotiable based on order size and customer relationship.

What shipping methods are available?

We ship by sea freight (FCL/LCL), air freight, and express courier (DHL, FedEx, UPS), depending on order size and urgency. We can also ship to your nominated forwarder.

Can you supply cut-to-size 1070 aluminum?

Yes. We offer custom cutting services including precision saw cutting, laser cutting, and shearing for 1070 aluminum sheet, plate, bar, and tube to your specified dimensions.

Contact Linsy Aluminum today for your 1070 aluminum (Al99.7) sheet, wire, bar, and tube requirements. Custom sizes, full MTC documentation, and SGS test reports available on request.