7075 알루미늄 합금

7075 aluminum is the best-known high-strength 7xxx series alloy, with zinc as the principal hardener and copper and magnesium as major additions. In the T6 and T651 tempers it reaches strength comparable to many steels while staying light, which is why it has been the aerospace and performance-engineering standard for decades. Its corrosion resistance is lower than 6xxx grades, so exterior use usually calls for cladding or coating. Linsy supplies 7075 across the full form range — sheet, plate, tube, bar, wire, and profile — with mill test certificates on every order.

이용 가능한 양식: sheet / plate, tube, bar / rod, wire
흔히 나타나는 기질: F, H112, O, T6, T651, T7451
처리 지원: CNC machining, laser cutting, TIG/MIG welding, anodizing, polishing, powder coating
품질 관련 문서: 모든 주문 시 MTC 보고서 제공

What Is 7075 Aluminum?

7075 aluminum is the best-known high-strength 7xxx series alloy, with zinc as the principal hardener and copper and magnesium as major additions. In the T6 and T651 tempers it reaches strength comparable to many steels while staying light, which is why it has been the aerospace and performance-engineering standard for decades. Its corrosion resistance is lower than 6xxx grades, so exterior use usually calls for cladding or coating. Linsy supplies 7075 across the full form range — sheet, plate, tube, bar, wire, and profile — with mill test certificates on every order.

구입 가능한 7075 알루미늄 제품

Sheet / Plate

Available tempers: F, O, T6, T651, T7451, H112

성질 두께(mm) 너비(mm) 길이(mm)
F, O, T6, T651, T7451, H112 0.5 – 200 500 – 2600 500 – 16000 (cut-to-length)

튜브

Available tempers: F, O, T6, T651, T7451, H112

성질 외경(mm) 벽 두께 (mm) 길이(mm)
F, O, T6, T651, T7451, H112 6 – 300 0.5 – 40 500 – 12000

Bar / Rod

Available tempers: F, O, T6, T651, T7451, H112

성질 지름(mm) 길이(mm)
F, O, T6, T651, T7451, H112 3 – 300 500 – 12000

Wire

Available tempers: T6, T651

지름(mm) 코일 중량 Tolerance
0.8 – 30 최소 50kg ± 0.02 mm

규격 및 등가 지정

7075 aluminum (EN AW-7075, AlZn5.5MgCu) is supplied to common wrought-alloy specifications. Typical standards by form: ASTM B209 (sheet and plate), ASTM B221 (extruded tube, bar, and profiles), ASTM B211 (bar and rod), ASTM B247 (forging stock), and ASTM B313 (welded tube). Always confirm the exact specification and temper with our team for your order.

화학 성분

요소 백분율(%)
Si 0.40 최대
Fe 0.50 최대
Cu 1.2 - 2.0
Mn 0.30 최대
Mg 2.1 - 2.9
Cr 0.18 - 0.28
Zn 5.1 - 6.1
Ti 0.20 최대
Zr 최대 0.25
기타(각) 0.05
기타(합계) 0.15
Al 잔액

열처리 상태에 따른 기계적 특성

성질 인장 강도(MPa) 항복 강도(MPa) 연신율 (%) 전단 강도(MPa)
O 230 – 290 95 – 145 10 – 13 150
T6 540 – 570 480 – 505 8 – 11 330
T651 540 – 570 480 – 505 8 – 11 330
T73 / T7451 470 – 500 390 – 420 8 – 11 285

Values are typical AA 7075 figures by temper; the soft O condition and peak T6 / overaged T73 differ widely. Confirm exact numbers with the mill certificate.

템퍼 선택 가이드

  • O — Annealed, softest condition for forming.
  • T6 — Peak-aged; maximum strength for the alloy.
  • T651 — Stress-relieved T6; preferred for machining and plate.
  • T73 / T7451 — Overaged for much better stress-corrosion resistance; used where corrosion matters.
  • H112 — As-fabricated plate, no special heat treatment.

주요 특징

Benchmark high strength

Decades of use as the reference strong aluminum alloy.

Excellent strength-to-weight

Steel-like strength at a fraction of the mass.

Lower corrosion resistance

Clad sheet or coatings recommended for exterior service.

Poor weldability

Generally supplied machined or bonded, not welded.

애플리케이션

  • Aircraft wing and fuselage structures
  • Performance automotive and motorcycle parts
  • Bicycle frames and components
  • Tooling, molds, and fixtures
  • Defense and ordnance components

가공 및 표면 마감 참고 사항

Linsy machines 7075 on CNC centers and laser-cuts plate and sheet. Anodizing or painting improves corrosion resistance; clad sheet is available for exterior use. Welding is not recommended — for joints, consider 6061 or a welding-grade 7xxx with our team.

품질 문서 및 검사

Linsy is a Shenzhen-based aluminum supplier with more than 20 years of experience. Our quality system is certified to ISO 9001, ISO 14001, and ISO 45001. Every order ships with a mill test certificate (MTC). SGS third-party test reports are available on request. Typical custom lead time is 10–60 days depending on temper, size, and quantity.

Why Choose Linsy for 7075 Aluminum

  • Shenzhen factory with 20+ years serving aerospace, automotive, and general engineering buyers
  • Wide form range: sheet, plate, coil, tube, bar, wire, profile, and forging stock
  • CNC machining, laser cutting, TIG/MIG welding, and anodizing / polishing / powder coating under one roof
  • Mill test certificate with every order; SGS reports on request
  • ISO 9001 / ISO 14001 / ISO 45001 certified operations

관련 자료

Explore these in-depth guides from our technical library:

7075 Aluminum FAQ

What is 7075 best for?

Applications where maximum strength-to-weight matters: aircraft structures, performance automotive, bike frames, and tooling.

T6 or T651 — which should I choose?

T651 is stress-relieved and the usual choice for plate and bar where machining stability matters; T6 is the peak-aged baseline.

Is 7075 corrosion resistant?

Less so than 6xxx alloys. Use T73/T7451 tempers or cladding/coating for corrosive environments.

Can 7075 be welded?

It welds poorly and loses strength in the heat-affected zone. For welded builds, ask us about 6061 or a qualified welding-grade alternative.

What documents come with the order?

Every order ships with an MTC, and SGS third-party test reports are available on request.

주문 관련 일반적인 자주 묻는 질문

일반적인 리드 타임은 얼마인가요?

Custom aluminum orders typically ship in 10–60 days depending on alloy, temper, size, and quantity. Stock or standard sizes may be faster — ask our team.

Can I get a mill test certificate?

Yes. Every order includes an MTC. SGS third-party test reports are available on request.

Do you offer machining and finishing?

Yes. We provide CNC machining, laser cutting, welding, anodizing, polishing, and powder coating so parts can be delivered closer to finished form.

How do I request a quote?

Send your alloy, temper, dimensions, quantity, and required standard. Our team will confirm availability, lead time, and pricing.

생산 장비

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린시의 장점

린시 알루미늄은 항공우주, 일반 엔지니어링, 자동차, 해양, 조선 및 기타 특수 산업 분야를 포함한 다양한 산업 분야에 서비스를 제공하는 알루미늄 가공 제품의 선도적인 공급업체입니다.

당사는 인증에서 알 수 있듯이 최고 수준의 품질과 환경적 책임을 유지하기 위해 최선을 다하고 있습니다: ISO 9001:2008, ISO 14001:2004 및 SGS.

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