{"id":3675,"date":"2026-09-16T11:17:21","date_gmt":"2026-09-16T08:17:21","guid":{"rendered":"https:\/\/www.defencemetal.com\/index.php\/en\/en-aw-5083\/"},"modified":"2026-09-25T16:27:08","modified_gmt":"2026-09-25T13:27:08","slug":"en-aw-5083","status":"publish","type":"page","link":"https:\/\/www.defencemetal.com\/index.php\/en\/en-aw-5083\/","title":{"rendered":"EN AW 5083"},"content":{"rendered":"

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EN AW 5083 \/ UNS A95083 \/ AMS 4056<\/h1>\n
DEFENCE METAL<\/span><\/p>\n
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EN AW-5083<\/div>\n
EN AW-5083 \u00b7 AlMg4.5Mn0.7 \u00b7 W.Nr. 3.3547 \u00b7 UNS A95083 \u00b7 Per EN 573-3: Mg 4.0-4.9 % \u2013 Mn 0.40-1.00 % \u2013 Cr 0.05-0.25 % \u2013 Si max 0.40 % \u2013 Fe max 0.40 % \u2013 Cu max 0.10 % \u2013 Zn max 0.25 % \u2013 Ti max 0.15 % \u2013 balance Al. This is a 5xxx series Al-Mg alloy and it is NOT HEAT-TREATABLE. Its strength comes from magnesium in solid solution and from cold work (H tempers). There is NO solution treatment plus ageing step; tempers such as T4 \/ T6 \/ T651 are not defined for this alloy. The tempers are O, H111, H112, H116, H321 and the H12\/H22\/H32 \u00b7 H14\/H24\/H34 families.<\/div>\n
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Not to be confused with<\/div>\n

EN AW 5754<\/a><\/div>\n<\/div>\n

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For what<\/div>\n
Bought for welded, non-heat-treated structures that must survive seawater and industrial atmospheres: ship hulls and superstructures, tanks and pressure vessels, tipper bodies, mine skips, cryogenic vessels, armour plate.<\/div>\n<\/div>\n
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Forms<\/div>\n
Plate \u00b7 sheet \u00b7 round bar \u00b7 flat bar \u00b7 tube \u00b7 forgings. All forms are supplied to order.<\/div>\n<\/div>\n
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Standards<\/div>\n
AMS 4056<\/b> (5083-O sheet and plate, annealed) \u00b7 AMS 4057<\/b> (5083-H323 sheet) \u00b7 AMS 4058<\/b> (5083-H343 sheet) \u00b7 AMS-QQ-A-200\/4 (5083 extruded bar, rod, shapes, tube and wire) \u00b7 AMS-QQ-A-250\/6 (5083 plate and sheet \u2014 CANCELLED in March 2012) \u00b7 ASTM B209\/B209M (sheet and plate) \u00b7 ASTM B928\/B928M (5xxx marine products with Mg \u2265 3 %) \u00b7 ASTM B221 (extrusions) \u00b7 EN 485-1\/-2\/-3\/-4 (flat products) \u00b7 EN 755-2 (extruded rod, bar, tube and profiles) \u00b7 EN 754-2 (cold drawn rod, bar and tube) \u00b7 EN 573-3 (chemical composition) \u00b7 EN 515 (temper designations) \u00b7 EN 13195 (marine applications)
AMS 4056, 4057 and 4058 were each verified against SAE records and all three are 5083; but they cover THREE DIFFERENT tempers (O, H323 and H343 respectively) and are not interchangeable.<\/span><\/div>\n<\/div>\n
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Advantage<\/div>\n
The highest strength among non-heat-treatable aluminium alloys: EN 485-2 requires Rp0.2 min 215 MPa and Rm min 305 MPa in the H116 and H321 tempers. In the same standard the limit for 5754 H22 is 130 MPa \/ 220-270 MPa.<\/div>\n<\/div>\n
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Welding<\/div>\n
Filler metal 5183 is the first choice; 5356 and 5556 are alternatives (BIKAR also lists 5087). It is welded by TIG and MIG; resistance welding is also good, gas welding and brazing are poor. PREHEAT in the sense used for steel is not applied to aluminium;<\/div>\n<\/div>\n
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Limits<\/div>\n
The critical limit is temperature. Because magnesium is clearly above 3 %, prolonged warm exposure precipitates beta phase (Mg2Al3) on the grain boundaries; that phase is anodic and starts INTERGRANULAR CORROSION, intergranular stress corrosion cracking and exfoliation.<\/div>\n<\/div>\n
REQUEST A QUOTE<\/a>All aluminium alloys →<\/a>TECHNICAL DETAILS ↓<\/span><\/div>\n
Compiled from manufacturer data sheets \u00b7 confirm against the current specification before ordering<\/div>\n<\/div>\n<\/div>\n

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