7050 Aluminum Sheet & Plate — AMS 4050 T7451 Aerospace-Grade | HXM
A 7000-series (Al-Zn-Mg-Cu) ultra-high-strength aerospace alloy from a China AS9100D mill. 60+ tons T7451 / T7651 plate & sheet in stock, cut-to-length and precision-sawn, EN 10204 3.1 with every lot.
📦 MOQ 300 kg / 1 t · ⏱️ Lead 12–25 days · 📜 EN 10204 3.1 · 💬 Quote in 24 h
B2B tailored pricing — not a catalog price. We quote per your exact alloy, temper, thickness, width, quantity & surface finish against current market. Typical detailed quote within 24 h; send a drawing/PDF for priority.
MOQ
300 kg / 1 t
Lead time
12–25 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
AMS 4050 / ASTM B209
Spec compliance
- 60+ tons 7050-T7451 / T7651 plate & sheet stock
- Sawing & 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 B209 & EN 485-2; thickness per EN 485-2, width & length per EN 755-4 / customer print. Tighter (−50% / −100%) and special flatness on request. Stock tempers: O, T7351, T7451, T7651, T651, T76, T74, T73.
Sheet · Plate · Thick plate · Cut-to-length · Precision-sawn · Oversized plate
| Dimension | Standard stock range | Tolerance (EN 485-2) | Note |
|---|---|---|---|
| Thickness | 0.5 – 150 mm | ±0.05 to ±0.40 mm | Sheet 0.5–6 / Plate 6–150 |
| Width | 500 – 3000 mm | ±1.0 to ±3.0 mm | Saw / shear cut to width |
| Length | 1000 – 12000 mm | ±2.0 to ±5.0 mm | Cut-to-length to print |
| Flatness | per EN 485-2 table | special on request | Aircraft-grade flatness |
| Max plate mass | up to 8.0 t | ±3% | per piece / per order |
Quick Answer for procurement
7050 aluminum (UNS A97050 / EN AW-7050 / AlZn6CuMgZr) is a heat-treatable 7000-series aerospace alloy with 5.7–6.7% Zn, 1.9–2.6% Mg, 2.0–2.6% Cu, density 2.82 g/cm³, tensile 510–560 MPa (T7451/T7651). It offers the best stress-corrosion-cracking (SCC) resistance of the high-strength 7xxx family and is not fusion-weldable. HXM stocks 60+ tons T7451/T7651, cut-to-length, lead time 12–25 days, MOQ 300 kg stock / 1 t custom, quote in 24 h.
Why specify 7050 aluminum sheet & plate?
- Ultra-high strength: 510–560 MPa tensile at 1/3 steel weight — ideal for primary aircraft structure.
- Best SCC resistance in 7xxx — superior to 7075 in thick sections; chosen for wing & fuselage frames.
- High toughness & damage tolerance — resists crack growth under fatigue.
- NOT fusion-weldable — use mechanical fastening / friction stir / braze.
- Aerospace-documented — AMS 4050, ASTM B209, EN 10204 3.1 MTC.
7050 is the global standard for thick aerospace plate — wing spars, fuselage frames, bulkheads and landing-gear structures where peak strength and SCC resistance both matter.
7050 aluminum sheet & plate specifications
Chemical composition (per AMS 4050 / ASTM B209, wt %)
| Element | Min | Max | Function |
|---|---|---|---|
| Zn (Zinc) | 5.7 | 6.7 | Primary strengthener (MgZn₂ η-phase) |
| Mg (Magnesium) | 1.9 | 2.6 | Forms η-phase with Zn, raises strength |
| Cu (Copper) | 2.0 | 2.6 | Improves strength, SCC resistance |
| Zr (Zirconium) | 0.08 | 0.15 | Grain refinement, recrystallization control |
| Fe (Iron) | — | 0.15 | Impurity |
| Si (Silicon) | — | 0.12 | Impurity |
| Cr (Chromium) | — | 0.04 | Impurity (kept low for SCC) |
| Mn (Manganese) | — | 0.10 | Impurity |
| Ti (Titanium) | — | 0.06 | 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) | ≤290 | ≤145 | 10–14 | Forming / cladding base |
| T7351 | 490 | 420 | 10–13 | Best SCC resistance |
| T7451 | 510 | 455 | 8–11 | Wing & fuselage frames (standard) |
| T7651 | 540 | 485 | 7–10 | Higher strength structure |
| T651 | 550 | 490 | 7–10 | Max strength, less SCC-tolerant |
Physical & thermal properties
| Property | Value | Notes |
|---|---|---|
| Density | 2.82 g/cm³ | ~35% lighter than steel |
| Melting range | 477–635 °C | Solution treat: 465–480 °C |
| Electrical conductivity | 38–42% IACS (O) | Lower than 6061 |
| Thermal conductivity | 150 W/m·K (O) | 155 W/m·K (T6) |
| Modulus of elasticity | 71 GPa | ~26% of steel stiffness |
| Coeff. thermal expansion | 23.2 × 10⁻⁶ /°C | 20–100 °C |
7050 vs 7075 vs 2024 vs 6061 — which plate do you need?
| Property | 7050 | 7075 | 2024 | 6061 |
|---|---|---|---|---|
| Strength (T6/T7451, MPa) | 540 | 570 | 450 | 310 |
| SCC resistance (thick) | ✅ Excellent | ⚠ Fair | ❌ Poor | ✅ Good |
| Toughness | ✅ High | ⚠ Medium | ⚠ Medium | ✅ High |
| Weldability (fusion) | ❌ Poor | ❌ Poor | ❌ Poor | ✅ Good |
| Best for | Thick aircraft struct. | Aero high-strength | Aircraft skin | Welded struct. |
Where 7050 sheet & plate is used (aerospace & beyond)
Typical uses: aircraft wing spars & fuselage frames · bulkheads & ribs · landing-gear & structural fittings · military vehicle armour & hull structure · high-strength tooling & moulds · sport equipment (bicycle frames, climbing gear) · cryogenic & pressure vessels. 7050-T7451 is the dominant thick-plate alloy for primary aircraft structure where strength and SCC resistance must coexist.
Buyer pain points — and how HXM solves each
Pain #1
7050 confused with 7075 — mill ships the wrong alloy for your SCC-critical part.
HXM solution
We confirm temper & SCC class per AMS 4050; 7050-T7451 chosen for thick-section SCC resistance, documented per lot.
Pain #2
Plate flatness rejects in your 5-axis machining — waves cause scrap.
HXM solution
Aircraft-grade flatness per EN 485-2; stress-relieved tempers (T7451/T7651) minimise residual stress & distortion.
Pain #3
Welding 7050 → cracking — assumed weldable like 6061 → scrap.
HXM solution
We warn up-front: 7xxx not fusion-weldable. Use fastening, FSW or switch alloy. Guide →
Pain #4
Long lead from western mills — 90+ days, +30% premium on thick plate.
HXM solution
60+ tons 7050-T7451/T7651 plate & sheet stock; 12–25 day lead, cut-to-length to your print.
Pain #5
No aerospace docs — need AS9100D, not just ISO 9001.
HXM solution
Full AS9100D + EN 10204 3.1 + spectro cert every lot. All sheets →
Where HXM 7050 plate is already specified (representative cases)
Illustrative program summaries — replace with your real, approved case studies before publishing.
Wing spar & fuselage frame plate
- 7050-T7451 plate 25–80 mm
- Qty 12 t · cut-to-length
- EN 10204 3.1 + spectro cert
- Lead 18 days · CIF Hamburg
✓ Zero SCC reject on 4 lots
Landing-gear structural fittings
- 7050-T7651 plate 40 mm
- Qty 5.0 t · precision-sawn
- AS9100D flow-down docs
- Lead 16 days · FOB Shanghai
✓ Reordered 2× in 9 months
Mould & bicycle-frame plate
- 7050-T651 plate 12 mm
- Qty 1.5 t (below 1 t MOQ)
- Sheared + protective film
- Lead 12 days · DDP Shenzhen
✓ Stock MOQ met, fast turn
7050 sheet / plate RFQ checklist — accurate quote in 24 hours
- Alloy & UNS — 7050 / UNS A97050 / EN AW-7050
- Temper — T7351 / T7451 / T7651 / T651 / O
- Form — sheet / plate / thick plate / cut-to-length
- Thickness & width & length — mm (or inch)
- Quantity — kg or tons (stock vs custom MOQ)
- Tolerance & flatness — standard or special
- Standard — ASTM B209 / EN 485-2 / AMS 4050
- Surface — mill finish / clad / anodized-ready / film
- Destination & Incoterms — FOB / CIF / DDP + port
📧 Email mailto:[email protected] or WhatsApp +86 137 6190 6384. Drawing/spec PDF gets priority.
Frequently asked questions (7050 aluminum sheet & plate)
Is 7050 aluminum weldable?
No — 7050 is not fusion-weldable (hot-cracking and SCC risk like other 7xxx). Use mechanical fastening, friction-stir welding or braze. For welded structures use 5083 or 6061.
T7451 vs T7651 — which temper for plate?
T7451 is the standard aerospace temper (510 MPa, best balance of strength + SCC resistance); T7651 is higher strength (540 MPa) with slightly less SCC allowance. T7351 is chosen when maximum SCC resistance is required.
What is the MOQ and lead time?
MOQ 300 kg stock / 1 t custom. Lead time 12–25 days ex-works from 60+ ton 7050-T7451/T7651 plate & sheet stock, cut-to-length to your print.
Do you provide material certification?
Yes — EN 10204 3.1 MTC + AS9100D mill cert + third-party spectro analysis every lot.
7050 vs 7075 — which plate to choose?
7050 has better stress-corrosion-cracking resistance and toughness, especially in thick sections — preferred for primary aircraft structure. 7075 reaches slightly higher peak strength but is more SCC-prone. Pick 7050 when both strength and SCC resistance matter.
Can you supply to AMS 4050?
Yes — 7050-T7451/T7651 plate produced/inspected to AMS 4050 / AMS-QQ-A-250/12, suitable for OEM sub-supply with full traceability.
Talk to a 7050-aluminum-plate specialist
From 300 kg of 6 mm T7451 sheet for prototyping to 8 t of 80 mm plate for production — send your drawing, get a quote in 24 h.
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