7075 Aluminum Tube & Pipe — T6/T651/T7351 High-Strength Aerospace Tube | HXM
A 7000-series (Al-Zn-Mg-Cu) ultra-high-strength aerospace alloy drawn & extruded into precision tube/pipe by a China AS9100D mill. 7075-T6/T651/T7351 tube in stock, OD 6–300 mm, EN 10204 3.1 with every lot.
📦 MOQ 100 kg stock / 500 kg custom · ⏱️ Lead 12–30 days · 📜 EN 10204 3.1 · 💬 Quote in 24 h
B2B tailored pricing — not a catalog price. We quote per your exact alloy, temper, OD, wall, length, quantity & finish against current market. Typical detailed quote within 24 h; send a drawing/PDF for priority.
MOQ
100 kg stock / 500 kg custom
Lead time
12–30 days
Cert
EN 10204 3.1
Quote
within 24 h
AS9100D
Aerospace quality system
EN 10204 3.1
MTC with every lot
ISO 9001
Quality management
ASTM B221
Spec compliance
- 7075 stock in multiple tempers / sizes
- Drawing & cut-to-length in-house
- FOB / CIF / DDP worldwide
- CHALCO / Hydro / Rio Tinto primary ingot
Available forms, sizes & tolerances (HXM stock)
All tolerances meet / exceed ASTM B221 / B241 & EN 755 for tube; OD per EN 755-7, wall per customer print. Tighter and special straightness/surface on request. Stock tempers: F, O, T6, T651, T73, T7351.
Seamless · Drawn · Extruded · Round · Square · Rectangular
| Dimension | Standard stock range | Tolerance | Note |
|---|---|---|---|
| Outer diameter | 6 – 300 mm | ±0.10 to ±0.60 mm | h8/h9/h11 |
| Wall thickness | 0.5 – 40 mm | ±5% to ±10% | Per print |
| Length | 500 – 12000 mm | ±1 to ±5 mm | Cut-to-length |
| Straightness | ≤ 0.5 mm / 1000 mm | special | Drawn / extruded |
| Tempers | F, O, T6, T651, T73, T7351 | — | Overage for SCC |
| Surface | Mill / anodizing-ready | — | Per application |
Quick Answer for procurement
7075 aluminum (UNS A97075 / EN AW-7075 / AlZn5.5MgCu) is the best-known high-strength 7xxx aerospace alloy, with 5.1–6.1% Zn, 2.1–2.9% Mg, 1.2–2.0% Cu, density 2.81 g/cm³, tensile 540–572 MPa (T6) — the highest strength-to-weight of any common aluminum alloy. It is not fusion-weldable (use mechanical fastening or switch to 5083/6061 for welding). HXM stocks tube in T6/T651/T73/T7351, lead time 12–30 days, MOQ 100 kg stock / 500 kg custom, quote within 24 h.
Why specify 7075 aluminum tube?
- Peak strength-to-weight: 540–572 MPa tensile at 1/3 steel weight — the strongest common aluminum grade.
- Excellent machinability: one of the best aluminum alloys for CNC machining, great surface finish.
- Good fatigue resistance — holds up under cyclic load in aerospace hardware.
- Wide temper choice: T6 peak strength, T73/T7351 for much better stress-corrosion resistance.
- Documented & certified: ASTM B209/B221/B211, AMS 4045/4046, EN 10204 3.1 MTC.
7075 is the global standard for high-strength aerospace and performance-engineering parts — fittings, gears, shafts, bicycle frames and precision tooling where peak strength matters most.
7075 aluminum tube specifications
Chemical composition
| Element | Min | Max | Function |
|---|---|---|---|
| Zn (Zinc) | 5.1 | 6.1 | Primary strengthener (MgZn₂ η-phase) |
| Mg (Magnesium) | 2.1 | 2.9 | Forms η-phase with Zn, raises strength |
| Cu (Copper) | 1.2 | 2.0 | Improves strength & peak-age response |
| Cr (Chromium) | 0.18 | 0.28 | Grain refinement, toughness |
| Zr (Zirconium) | — | 0.25 | Grain control (alt. to Cr) |
| Fe (Iron) | — | 0.50 | Impurity |
| Si (Silicon) | — | 0.40 | Impurity |
| Mn (Manganese) | — | 0.30 | Impurity |
| Ti (Titanium) | — | 0.20 | Grain refiner |
| Others (each / total) | — | 0.05 / 0.15 | — |
| Al (Aluminum) | Balance | — | Base |
Mechanical properties by temper
| Temper | Tensile (MPa) | Yield 0.2% (MPa) | Elong. (%) | Typical use |
|---|---|---|---|---|
| O (annealed) | 230–290 | 95–145 | 10–13 | Soft, formable stock |
| T6 | 540–572 | 480–503 | 8–11 | Peak strength parts |
| T651 | 540–572 | 470–510 | 9–11 | Stress-relieved, machined |
| T73 / T7351 | 470–500 | 390–420 | 10–13 | Best SCC resistance |
| T76 | 524–555 | 455–475 | 9–11 | Balanced strength/SCC |
Physical & thermal properties
| Property | Value | Notes |
|---|---|---|
| Density | 2.81 g/cm³ | ~35% lighter than steel |
| Melting range | 477–635 °C | Solution treat ~465–480 °C |
| Electrical conductivity | 33–40% IACS | Lower than 6xxx |
| Thermal conductivity | 130 W/m·K (T6) | 155 W/m·K (T73) |
| Modulus of elasticity | 71 GPa | ~26% of steel stiffness |
| Coeff. thermal expansion | 23.2 × 10⁻⁶ /°C | 20–100 °C |
Comparison — which to choose?
| Property | 7075 | 7050 | 2024 | 6061 |
|---|---|---|---|---|
| Strength (T6/T7451, MPa) | 540–572 | 524–552 | 450 | 310 |
| SCC resistance (thick) | ⚠ Fair (T73 better) | ✅ Excellent | ❌ Poor | ✅ Good |
| Toughness | ⚠ Medium | ✅ High | ⚠ Medium | ✅ High |
| Weldability (fusion) | ❌ Poor | ❌ Poor | ❌ Poor | ✅ Good |
| Best for | Aero high-strength | Thick SCC-critical | Aircraft skin | Welded struct. |
Where 7075 tube is used
Typical uses: aircraft fittings, fuselage stringers & structural parts · gears, shafts & precision machined components · landing-gear parts · military & defense hardware · high-performance bicycle & automotive frames · mould bases & tooling plates · robotics & fixtures. 7075-T6/T651 is chosen where peak strength and stiffness-to-weight dominate; for thick, SCC-critical parts use T73/T7351 or 7050. Note: 7075 is not supplied as welding wire.
Buyer pain points — and how HXM solves each
Pain #1
7075-T6 confused with 7050 — wrong alloy for your thick SCC-critical part.
HXM solution
We confirm alloy & temper per your print; T73/T7351 specified when stress-corrosion resistance is required, documented per lot.
Pain #2
Section too thin / thick for the chosen temper — dimensional or SCC risk.
HXM solution
We match temper to section: T6/T651 for thin-to-medium, T73/T7351 for thick/maritime service; full MTC per lot.
Pain #3
Assumed weldable like 6061 → cracking — 7075 is not fusion-weldable.
HXM solution
We flag up-front: 7xxx not welding wire. We supply as machined/formed parts or fastener stock. Guide →
Pain #4
Long lead from western mills — 90+ days, +premium on aerospace plate/bar.
HXM solution
7075 T6/T651/T73 stock across forms; 12–30 day lead, cut-to-size to your drawing.
Pain #5
No aerospace docs — need AS9100D, not just ISO 9001.
HXM solution
Full AS9100D + EN 10204 3.1 + spectro cert every lot. All wires →
Where HXM 7075 tube is already specified (representative cases)
Illustrative program summaries — replace with your real, approved case studies before publishing.
Machined fittings from 7075-T651 plate
- 7075-T651 plate 20–80 mm
- Qty 2 t, cut-to-size
- EN 10204 3.1 + spectro
- Lead 20 days · CIF Hamburg
✓ Zero reject on 8 lots
Bicycle frame stock 7075-T6
- 7075-T6 bar 25–50 mm
- Qty 500 kg
- Bright drawn + film
- Lead 15 days · FOB Shanghai
✓ Reordered 3× in a year
Tooling plates 7075-T651
- 7075-T651 plate 40 mm
- Qty 1.2 t
- Flatness per print
- Lead 18 days · DDP Shenzhen
✓ Met flatness spec first pass
7075 tube RFQ checklist — accurate quote in 24 hours
- Alloy & UNS — 7075 / UNS A97075 / EN AW-7075
- Temper — O / T6 / T651 / T73 / T7351 / T76
- Form & size — OD 6–300 mm, wall 0.5–40 mm
- Surface — mill / bright / anodizing-ready
- Quantity — kg or pieces (stock vs custom MOQ)
- Tolerance & straightness — standard or special
- Standard — ASTM B209/B211/B221/B241 / EN 573/755
- Destination & Incoterms — FOB / CIF / DDP + port
📧 Email mailto:[email protected] or WhatsApp +86 137 6190 6384. Drawing/spec PDF gets priority.
Frequently asked questions (7075 aluminum tube)
Is 7075 aluminum weldable?
No — 7075 is not fusion-weldable (hot-cracking and severe post-weld strength loss like other 7xxx). Join by riveting, fasteners, adhesive bonding or friction-stir welding. For welded structures use 5083/6061. It is supplied as machined/formed parts or fastener stock, not welding wire.
What sizes and tempers can you supply?
Across forms: sheet/plate 0.5–200 mm, bar/rod 3–300 mm dia, tube OD 6–300 mm, wire 0.8–30 mm, coil/strip 0.2–6 mm — all cut-to-size. Tempers O, T6, T651, T73, T7351, T76. Stock and custom on request.
Which temper should I choose — T6 or T73/T7351?
T6/T651 for maximum strength in thin-to-medium machined parts. T73/T7351 (overaged) for much better stress-corrosion-cracking resistance in thick sections or marine/chemical exposure. We help you pick per your service conditions.
What is the MOQ and lead time?
MOQ depends on form (stock from 100–500 kg; custom per drawing). Lead time 12–30 days ex-works from HXM 7075 stock, cut and machined to your print.
7075 vs 7050 — which to choose?
7075-T6 is stronger in thin/medium sections (540–572 MPa); 7050-T7451 wins on fracture toughness and SCC resistance in thick sections and costs a bit more. Pick 7075 for peak strength-to-weight, 7050 for thick, crack-tolerant, corrosive-service parts.
Do you provide material certification?
Yes — EN 10204 3.1 MTC + AS9100D mill cert + third-party spectro analysis every lot.
Talk to a 7075-aluminum-tube specialist
From prototype to production — send your drawing, get a quote in 24 h.
HXM Aluminum · AS9100D-certified aerospace aluminum tube supplier · 7075 Aluminum Tube
