{"id":26303,"date":"2025-11-21T09:52:38","date_gmt":"2025-11-21T01:52:38","guid":{"rendered":"https:\/\/sinoextrud.com\/?p=26303"},"modified":"2025-11-21T09:52:38","modified_gmt":"2025-11-21T01:52:38","slug":"%e3%82%a2%e3%83%ab%e3%83%9f%e6%8a%bc%e5%87%ba%e6%9d%901%e6%9c%ac%e3%81%a7%e3%81%a9%e3%82%8c%e3%81%a0%e3%81%91%e3%81%ae%e9%87%8d%e9%87%8f%e3%82%92%e6%94%af%e3%81%88%e3%82%8b%e3%81%93%e3%81%a8%e3%81%8c","status":"publish","type":"post","link":"https:\/\/sinoextrud.com\/ja\/how-much-weight-can-1-aluminum-extrusion-support\/","title":{"rendered":"\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u62bc\u51fa\u67501\u672c\u3067\u3069\u308c\u304f\u3089\u3044\u306e\u91cd\u91cf\u3092\u652f\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304b\uff1f"},"content":{"rendered":"

\"F
F Channel Aluminum Extrusion<\/figcaption><\/figure>\n<\/p>\n

\"Aluminum
Aluminum Extrusion Advertising Signs Aluminum Frame Profile<\/figcaption><\/figure>\n<\/p>\n

I once faced a scenario where a long aluminum frame structure sagged under a heavy load and I wondered\u2014how much weight can an aluminum extrusion truly support?<\/p>\n

The load\u2011capacity of an aluminum extrusion depends on alloy grade, profile geometry, support conditions, and connection design\u2014there\u2019s no single \u201chow much\u201d number that applies universally.<\/strong><\/p>\n

Let\u2019s walk through the key factors, the geometry side, calculation methods, and how reinforcements help.<\/p>\n

\n

What influences extrusion load strength?<\/h2>\n

When you pick a profile and hang a heavy item\u2014if you didn\u2019t account for everything, failure may happen.<\/p>\n

Load capacity is influenced by the material alloy, the length and orientation of the span, how the profile is supported, and how it connects to other parts.<\/strong><\/p>\n

\"Short
Short Run Custom Aluminum Extrusions<\/figcaption><\/figure>\n<\/p>\n

Material alloy and temper<\/h3>\n

The alloy matters. For example, 6063\u2011T6 has a high yield strength, while softer alloys like 1100 series have much lower limits. A stronger alloy results in higher allowable load.<\/p>\n

Length and support conditions<\/h3>\n

An extrusion that is 500 mm long and supported at both ends will carry more weight than a 2000 mm span with a cantilever setup. Shorter spans reduce bending and deflection significantly.<\/p>\n

Cross-section and geometry<\/h3>\n

A larger moment of inertia means higher resistance to bending. A thick-walled, tall profile will hold more load than a thin, small one. The shape and wall layout affect strength directly.<\/p>\n

Connections and fixing<\/h3>\n

Even the best extrusion fails if its connections are weak. Poorly fastened joints or brackets can become the failure point. Fixed supports always hold more than loosely fastened ones.<\/p>\n

Environment and dynamic loads<\/h3>\n

Vibration, shocks, and cyclic forces lower the effective strength. Long-term or dynamic loads require safety margins much larger than static applications. Temperature and corrosion also play a role.<\/p>\n

Summary of factors<\/h3>\n\n\n\n\n\n\n\n\n\n
Factor<\/th>\nWhy it matters<\/th>\n<\/tr>\n<\/thead>\n
Alloy & temper<\/td>\nDefines strength and stiffness<\/td>\n<\/tr>\n
Length\/span & support<\/td>\nAffects deflection and moment capacity<\/td>\n<\/tr>\n
Cross-section geometry<\/td>\nDetermines bending resistance and stability<\/td>\n<\/tr>\n
Fixing\/connection design<\/td>\nInfluences how loads are transferred or lost<\/td>\n<\/tr>\n
Loading type & environment<\/td>\nExternal conditions impact durability and safety factors<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/svg> Alloy grade is the only thing that determines how much weight an aluminum extrusion can hold.<\/b>False<\/span><\/p>

Besides alloy grade, geometry, span, support conditions and connection design all play significant roles.<\/p><\/div>
\n

<\/svg> A shorter span extrusion supported at both ends will hold more load than a longer cantilevered one of the same alloy and cross-section.<\/b>True<\/span><\/p>

Because bending moments and deflection increase with span length and weaker support conditions.<\/p><\/div><\/p>\n

\n

Why wall thickness affects capacity?<\/h2>\n

If you just pick a \u201c20\u00d720 aluminium profile\u201d without checking its wall thickness, you might end up with a sagging beam.<\/p>\n

A thicker wall gives better strength and less deflection. Hollow sections reduce weight but may reduce stiffness unless optimized.<\/strong><\/p>\n

\"Oval
Oval Aluminum Extrusion<\/figcaption><\/figure>\n<\/p>\n

What wall thickness changes<\/h3>\n
    \n
  1. Bending resistance<\/strong> \u2014 Thicker walls increase moment of inertia. This directly reduces deflection under load. <\/li>\n
  2. Buckling resistance<\/strong> \u2014 Wall thickness affects how easily the extrusion deforms under compression or side force. <\/li>\n
  3. Local deformation<\/strong> \u2014 Thin walls dent more easily when loads are focused on small areas. <\/li>\n
  4. Joint strength<\/strong> \u2014 Thicker sections can hold screws and fasteners more reliably, reducing risk at connection points.<\/li>\n<\/ol>\n

    Example comparison<\/h3>\n

    Two extrusions of the same external size\u2014say 40\u00d780 mm\u2014can have very different strengths if one has 2 mm walls and the other has 4 mm. The thicker one resists bending and twisting far better.<\/p>\n

    Practical considerations<\/h3>\n
      \n
    • Wall thickness affects both performance and weight. <\/li>\n
    • You should balance wall thickness with material cost and expected load. <\/li>\n
    • Uniform wall thickness ensures predictable behavior during extrusion and use. <\/li>\n
    • In high-load applications, thicker walls provide better durability and reliability.<\/li>\n<\/ul>\n\n\n\n\n\n\n\n
      Wall Thickness<\/th>\nBending Strength<\/th>\nDeflection<\/th>\nFastener Strength<\/th>\n<\/tr>\n<\/thead>\n
      1.5 mm<\/td>\nLow<\/td>\nHigh<\/td>\nWeak<\/td>\n<\/tr>\n
      2.5 mm<\/td>\nModerate<\/td>\nMedium<\/td>\nAcceptable<\/td>\n<\/tr>\n
      4 mm<\/td>\nHigh<\/td>\nLow<\/td>\nStrong<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      <\/svg> Thicker wall always doubles the load capacity of the extrusion, regardless of other factors.<\/b>False<\/span><\/p>

      Thicker wall improves capacity but span, alloy, support and geometry still influence the overall load capacity.<\/p><\/div>
      \n

      <\/svg> Wall thickness is a key factor because it affects moment of inertia, deflection and local resistance of the section.<\/b>True<\/span><\/p>

      Wall thickness contributes significantly to sectional properties and stiffness, which are critical in load capacity.<\/p><\/div><\/p>\n

      \n

      How to calculate safe load limits?<\/h2>\n

      When a client asked me to specify allowable load for a custom aluminum frame, I used formulas rather than guessing.<\/p>\n

      Safe load limit calculation typically uses beam bending and deflection formulas\u2014choosing allowable deflection, then solving for allowable load using section properties and support type.<\/strong><\/p>\n

      \"Aluminum
      Aluminum Extrusion 6063 Anodized Clothes Drive Airer Aluminum Rack Profile<\/figcaption><\/figure>\n<\/p>\n

      Basic steps<\/h3>\n
        \n
      1. Define the span (L), support type (simply supported, cantilevered, etc.) <\/li>\n
      2. Use the correct modulus of elasticity (E), usually around 70 GPa for aluminum <\/li>\n
      3. Find the moment of inertia (I) and section modulus (W) of the profile <\/li>\n
      4. Choose an acceptable deflection limit (often L\/1000 or L\/500) <\/li>\n
      5. Calculate load (P) using deflection formulas <\/li>\n
      6. Check bending stress and ensure it’s below the material\u2019s yield strength <\/li>\n
      7. Apply safety factors, usually \u00d72 or \u00d73 for conservative design <\/li>\n<\/ol>\n

        Formula reference<\/h3>\n
          \n
        • Deflection (central load):
          \n[
          \n\\delta = \\frac{P \\cdot L^3}{48 \\cdot E \\cdot I}
          \n] <\/li>\n
        • Solving for load:
          \n[
          \nP = \\frac{48 \\cdot E \\cdot I \\cdot \\delta}{L^3}
          \n] <\/li>\n
        • Bending stress:
          \n[
          \n\\sigma = \\frac{M}{W} = \\frac{P \\cdot L\/4}{W}
          \n] <\/li>\n<\/ul>\n

          Example<\/h3>\n

          If a 1000 mm span aluminum profile has I = 4000 mm\u2074, and allowable deflection is 1 mm, you can compute P accordingly. Then check that bending stress is well below the yield limit (say, 200 MPa for 6063-T6) and adjust.<\/p>\n\n\n\n\n\n\n\n
          Parameter<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
          Span (L)<\/td>\n1000 mm<\/td>\n<\/tr>\n
          E<\/td>\n70,000 MPa<\/td>\n<\/tr>\n
          I<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

          F Channel Aluminum Extrusion Aluminum Extrusion Advertising Signs Aluminum Frame Profile I once faced a scenario where a long aluminum frame structure sagged under a heavy load and I wondered\u2014how much weight can an aluminum extrusion truly support? The load\u2011capacity of an aluminum extrusion depends on alloy grade, profile geometry, support conditions, and connection design\u2014there\u2019s no single \u201chow much\u201d number that applies universally. Let\u2019s walk through the key factors, the geometry side, calculation methods, and how reinforcements help. What influences extrusion load strength? When you pick a profile and hang a heavy item\u2014if you didn\u2019t account for everything, failure may happen. Load capacity is influenced by the material alloy, the […]<\/p>\n","protected":false},"author":6,"featured_media":6681,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_analysis_target_kw":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-26303","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-custom-mold"],"meta_box":{"post-to-quiz_to":[]},"_links":{"self":[{"href":"https:\/\/sinoextrud.com\/ja\/wp-json\/wp\/v2\/posts\/26303","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sinoextrud.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sinoextrud.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/ja\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/ja\/wp-json\/wp\/v2\/comments?post=26303"}],"version-history":[{"count":0,"href":"https:\/\/sinoextrud.com\/ja\/wp-json\/wp\/v2\/posts\/26303\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/ja\/wp-json\/wp\/v2\/media\/6681"}],"wp:attachment":[{"href":"https:\/\/sinoextrud.com\/ja\/wp-json\/wp\/v2\/media?parent=26303"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sinoextrud.com\/ja\/wp-json\/wp\/v2\/categories?post=26303"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sinoextrud.com\/ja\/wp-json\/wp\/v2\/tags?post=26303"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}