5052-H32/H34 Aluminium Flat Bar

What Is 5052 Aluminum Flat Bar?

5052 is a non-heat-treatable 5xxx series alloy, strengthened by magnesium (4.0–4.9%) and a small chromium addition (0.05–0.25%) rather than by heat treatment. As a flat bar it is supplied in strain-hardened tempers — most commonly H32 (quarter-hard) and H34 (half-hard) — which provide a useful strength level while keeping good formability.

5052 is one of the most widely used marine-grade aluminum alloys. Its corrosion resistance in saltwater and chemical environments is superior to that of 6xxx and 2xxx series alloys, which is why it appears in boat hulls, fuel tanks, and offshore structures. Unlike heat-treatable alloys, 5052 cannot be hardened by aging — its properties come from cold work (the H tempers).

Available 5052 Aluminum Flat Bar

5052 Flat Bar Dimensions

Flat bar is supplied by cross-section (thickness × width) and length. H32 and H34 are the standard tempers for flat bar.

Alloy	Temper	Dikte (mm)	Breedte (mm)	Lengte (mm)
5052	O, H32, H34	3–100	10–500	1,000–6,000

Custom thickness/width combinations and cut-to-length are available on request.

Specificaties en gelijkwaardige benamingen

Standaard	Benaming
EN AW	AW-5052
UNS	A95052
ASTM (staaf)	B221
ASTM (Sheet/Plate)	B209
ISO	AlMg4.5Mn0.4

Chemische samenstelling

Per EN 573-3 / ASTM B221:

Element	Gewicht %
Si	0,40 max
Fe	0,50 max
Cu	0,10 max
Mn	0.4–1.0
Mg	4.0–4.9
Cr	0.05–0.25
Zn	0,25 max
Ti	0,15 max
Overige (per stuk)	0,05 max
Overige (totaal)	0,15 max
Al	Saldo

Mechanische eigenschappen per hardingsgraad

Temper	Treksterkte (MPa)	Opbrengststerkte (MPa)	Rek A50 (%)	Elastische Modulus (GPa)
O (gegloeid)	170–215	65–85	25–30	69
H32	210–260	130–165	12–18	69
H34	240–285	180–215	10–14	69

Note: Elastic modulus for 5052 is approximately 69 GPa (10,000 ksi). Values above are typical ranges for flat bar; confirm with mill test certificates for specific orders.

Gids voor het kiezen van de juiste temperatuur

O Temper (Annealed)

Fully soft, maximum formability and ductility. Used where deep drawing or severe bending is required and strength is secondary.

H32 Temper (Quarter-Hard)

The most common flat-bar temper. H32 offers a good balance of strength (~210–260 MPa tensile) and formability — it bends cleanly for most fabricated brackets and frames. Recommended when moderate strength is needed with easy forming.

H34 Temper (Half-Hard)

Higher strength (~240–285 MPa tensile) with somewhat reduced formability. Used where stiffness and load capacity matter more than bend radius. Heavier sections and structural supports are typical H34 applications.

Temper	Beste voor	Belangrijkste voordeel
O	Deep-drawn or severely formed parts	Maximum ductility
H32	Brackets, frames, general fabrication	Strength + good formability
H34	Structural supports, stiffeners	Higher strength, still formable

Belangrijkste kenmerken

Uitzonderlijke corrosiebestendigheid

5052’s high magnesium content gives it the best general and saltwater corrosion resistance of the common wrought alloys (well above 6061 or 2024). It is the default choice for marine and chemical-processing hardware.

Good Formability & Workability

In O and H32 tempers, 5052 bends and forms readily. Even H34 can be formed with reasonable radii. This makes it ideal for fabricated structures, enclosures, and brackets.

Goed lasbaar

5052 welds well by TIG/MIG using 5356 filler (or 5183 for higher strength). Welded joints retain most of the parent corrosion resistance — important for marine structures.

Matige sterkte

5052 is not a high-strength structural alloy. Its tensile strength (210–285 MPa depending on temper) suits it to light structural and fabricated parts, not heavily loaded members. For higher strength, consider 5083 or 6061.

Toepassingen

5052 flat bar serves industries where corrosion resistance and formability outweigh peak strength:

• Marine components: Boat hull stringers, brackets, railings, cleats, and fittings
• Chemical processing: Tanks, piping supports, and frames exposed to mild chemicals
• Brandstoftanks: Baffles, straps, and structural members (5052 is compatible with fuel systems)
• Pressure vessels: Low-pressure tanks and enclosures (per applicable code)
• General sheet metal: Enclosures, panels, and fabricated frames

Opmerkingen over bewerking en oppervlakteafwerking

• Snijden: 5052 flat bar cuts cleanly by saw, shear, laser, or waterjet. CNC cutting to length and profile is available.
• Bending: Bends readily in O/H32. Minimum bend radius increases with temper — H34 needs larger radii than H32 to avoid cracking.
• Lassen: TIG/MIG with 5356 (or 5183 for higher-strength joints) filler. Pre-clean to avoid porosity. Post-weld strength is slightly below parent in the HAZ.
• Warmtebehandeling: Not applicable — 5052 is non-heat-treatable. Properties come from cold work only.
• Anodiseren: 5052 anodizes to a uniform, attractive finish (better than 5xxx alloys with higher copper). Type II and Type III both work; it is a common choice for decorative anodized parts.

Kwaliteitsdocumenten en inspectie

Elke bestelling bij Linsy bevat:

• Fabriekscertificaat (MTC) — chemical composition and mechanical properties per ASTM B221 / B209
• Maatcontroleverslag — thickness, width, and length measured against order
• SGS-testrapporten op verzoek beschikbaar voor verificatie door derden

Linsy werkt volgens de managementsystemen ISO 9001, ISO 14001 en ISO 45001. De productietermijnen variëren van 10 tot 60 dagen, afhankelijk van de productvorm en de complexiteit van de bestelling.

Why Choose Linsy for 5052 Flat Bar

Linsy Aluminum supplies marine-grade 5xxx alloys to fabrication shops, boat builders, and industrial buyers worldwide. For 5052 flat bar:

• H32 and H34 tempers in stock-range dimensions — contact us for current availability
• Custom thickness, width, and cut-to-length on request
• 5356 welding filler available to pair with your 5052 order
• MTC report included with every shipment
• Bedrijfsactiviteiten die zijn gecertificeerd volgens ISO 9001, ISO 14001 en ISO 45001
• Productietermijn van 10–60 dagen, afhankelijk van de specificaties
• Op verzoek zijn onafhankelijke tests door SGS beschikbaar

Gerelateerde bronnen

Learn more about 5052 and alloy selection:

• 5052 of 6061 aluminium: De ultieme gids
• De ultieme gids voor aluminium 5052
• Aluminium 5052 H32: Een diepgaande gids
• Marine Aluminum Plate: 5052 vs 5083

5052 Flat Bar FAQ

Is 5052 aluminum good for marine use?

Yes. 5052 has excellent saltwater corrosion resistance — it is one of the standard marine-grade alloys. It is widely used for boat hardware, brackets, and fuel tank components. For highest-strength marine plate, 5083 is sometimes chosen instead.

What is the difference between H32 and H34?

Both are strain-hardened tempers of 5052. H32 (quarter-hard) has lower strength (~210–260 MPa tensile) and better formability; H34 (half-hard) is stronger (~240–285 MPa) with somewhat less bend flexibility. Choose H32 for easy forming, H34 for stiffer parts.

Can 5052 flat bar be welded?

Yes. 5052 welds well with 5356 (or 5183) filler wire. It retains good corrosion resistance in the welded zone, which is why it is common in marine fabrication.

Is 5052 heat-treatable?

No. 5052 is a non-heat-treatable 5xxx alloy. Its strength comes from cold work (the H tempers), not from heat treatment. You cannot harden it by aging.

What filler should I use to weld 5052?

5356 is the standard filler for 5052. For higher-strength joints (e.g. thicker plate), 5183 may be specified. Avoid using 4xxx silicon fillers if maximum corrosion resistance is required.

Veelgestelde vragen over bestellingen in het algemeen

Wat is de minimale bestelhoeveelheid?

MOQ depends on dimensions and temper. Contact Linsy for specific MOQ details for 5052 flat bar.

Can I order custom widths and thicknesses?

Yes. Custom cross-sections and cut-to-length are available on request. Specify your required dimensions in the RFQ.

Welke documenten van hoge kwaliteit worden er verstrekt?

Every shipment includes a Mill Test Certificate (MTC). SGS third-party test reports are available on request.

Wat is de gebruikelijke levertijd?

Production lead time is 10–60 days depending on dimensions, temper, and order quantity.

Verzenden jullie ook naar het buitenland?

Ja. Linsy levert aluminiumproducten aan afnemers over de hele wereld. De verzendvoorwaarden en verzendopties worden bij het plaatsen van de bestelling bevestigd.