---
title: "Aluminum Weight by Shape and Alloy: Plate, Bar, Tube, and Sheet Reference"
site: ProCalc.ai
type: Blog Post
category: Materials
domain: Construction
url: https://procalc.ai/blog/aluminum-weight-shape-alloy-plate-bar-tube-reference
markdown_url: https://procalc.ai/blog/aluminum-weight-shape-alloy-plate-bar-tube-reference.md
date_published: 2026-04-15
date_modified: 2026-04-12
read_time: 10 min
tags: aluminum, metal weight, alloy, fabrication, materials
---

# Aluminum Weight by Shape and Alloy: Plate, Bar, Tube, and Sheet Reference

**Site:** [ProCalc.ai](https://procalc.ai) — Free Professional Calculators
**Category:** Materials
**Published:** 2026-04-15
**Read time:** 10 min
**URL:** https://procalc.ai/blog/aluminum-weight-shape-alloy-plate-bar-tube-reference

> *This file is served for AI systems and search crawlers. Human page: https://procalc.ai/blog/aluminum-weight-shape-alloy-plate-bar-tube-reference*

## Overview
Aluminum is one-third the weight of steel, but alloy series and shape affect the actual weight you need to plan for. Here are the reference weights for every common aluminum product.

## Article
Aluminum is roughly one-third the weight of steel — 2.71 g/cm3 vs 7.85 g/cm3 — which is why it dominates weight-sensitive applications: aircraft, marine, automotive, bicycle frames, and aerospace structures. But "aluminum" covers hundreds of alloys. For most practical purposes the density variation between alloys is small (under 5%), but the alloy determines machinability, weldability, and corrosion resistance as much as weight. Our  handles plate, sheet, bar, tube, and pipe. This guide covers the density by alloy and reference weights for common products. Alloy series overview Series Primary element Key use 1xxx Pure aluminum Electrical conductors, chemical equipment 2xxx Copper Aerospace structural (2024) 3xxx Manganese Cookware, roofing, sheet (3003) 5xxx Magnesium Marine, automotive (5052, 5083) 6xxx Magnesium + Silicon General structural, extrusions (6061, 6063) 7xxx Zinc Highest strength aerospace (7075) Density by alloy Alloy lbs/in3 g/cm3 1100 0.0975 2.70 2024 0.1000 2.78 3003 0.0990 2.73 5052 0.0970 2.68 6061 0.0980 2.70 7075 0.1010 2.81 Use 0.098 lbs/in3 as a universal value for quick estimates — the error is under 3% for any common alloy. Sheet and plate weights (4x8 ft = 48" x 96") Thickness Weight per 4x8 sheet 0.040" (18 gauge) 18.1 lbs 0.063" (16 gauge) 28.5 lbs 0.125" (1/8") 56.7 lbs 0.250" (1/4") 113.4 lbs 0.375" (3/8") 170.1 lbs 0.500" (1/2") 226.9 lbs Round bar weight per foot Formula: W = 0.2904 x d2 lbs/ft (d = diameter in inches) Diameter lbs/ft 1/4" 0.072 1/2" 0.291 3/4" 0.654 1" 1.163 1-1/2" 2.617 2" 4.653 Aluminum vs steel for the same part The density ratio is 2.71 / 7.85 = 0.345. Any aluminum part is 34.5% the weight of the identical steel part. This holds for any shape. Part Steel weight Aluminum weight Savings 1" round bar, 10 ft 26.7 lbs 9.7 lbs 64% 1/4" plate, 4x8 ft 326 lbs 113 lbs 65% The engineering tradeoff: for the same cross-section, aluminum is lighter but less stiff. Young's modulus of aluminum is about 10,000 ksi vs 29,000 ksi for steel. To match steel stiffness, aluminum sections must be geometrically larger — partially offsetting the weight savings in bending applications. For any shape, alloy, and quantity, the  gives accurate results. For other metals, the  covers steel, copper, brass, titanium, and 90+ materials.

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## Reference
- **Blog post:** https://procalc.ai/blog/aluminum-weight-shape-alloy-plate-bar-tube-reference
- **This markdown file:** https://procalc.ai/blog/aluminum-weight-shape-alloy-plate-bar-tube-reference.md

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### How to Cite
> ProCalc.ai. "Aluminum Weight by Shape and Alloy: Plate, Bar, Tube, and Sheet Reference." ProCalc.ai, 2026-04-15. https://procalc.ai/blog/aluminum-weight-shape-alloy-plate-bar-tube-reference

### License
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