HW HM HN H Beam Size Chart

Introduction

H beams are among the most widely used structural steel sections in modern construction due to their high load-bearing capacity, excellent structural stability, and versatility across a broad range of applications. They are commonly used in industrial buildings, bridges, warehouses, manufacturing facilities, commercial buildings, and other engineering projects that require superior structural performance.

Among the various hot-rolled H beam series, HW, HM, and HN represent three standard classifications designed to meet different structural requirements. Although they share the same H-shaped cross-section, each series features distinct dimensions, weights, and mechanical characteristics that directly influence load-bearing performance, construction efficiency, and material optimization.

This guide provides a comprehensive HW, HM, and HN H Beam Size Chart, including detailed dimensions, theoretical weight, technical specifications, and practical selection recommendations. Whether you are a structural engineer, steel fabricator, contractor, or international steel buyer, this guide will help you identify the most suitable H beam series for your project.

Complete Guide to Structural Steel H Beams

What Are HW, HM, and HN H Beams?

HW, HM, and HN are three standard series of hot-rolled H-shaped structural steel beams widely used in construction, infrastructure, and industrial engineering projects.

While all three share the same basic H-shaped profile, they differ in flange width, section height, web thickness, and overall weight. These structural differences determine how each beam performs under various loading conditions and make each series suitable for specific engineering applications.

·HW Series

HW H beams feature relatively wide flanges and offer excellent resistance to vertical loads and compressive forces. Their large cross-sectional area provides outstanding structural stability, making them a preferred choice for columns, heavy industrial structures, high-rise buildings, and projects requiring superior load-bearing capacity.

·HM Series

HM H beams provide an excellent balance between strength and weight. Their optimized section design makes them highly versatile and suitable for primary beams, commercial buildings, steel frame structures, warehouses, and general construction projects where both structural performance and material efficiency are important.

·HN Series

HN H beams have a lighter and more compact cross-section compared with HW and HM series. They are specifically designed for projects where reducing structural weight is a priority while still maintaining adequate strength and stiffness. HN beams are frequently used in lightweight steel structures, equipment platforms, and medium-duty industrial applications.

Understanding the differences between these three H beam series enables engineers and procurement professionals to select the most technically appropriate and cost-effective structural section for their specific project requirements.

H Beam vs. I Beam: What's the Difference?

Although H beams and I beams have similar cross-sectional shapes, they differ significantly in geometry, mechanical performance, and typical applications.

Compared with I beams, H beams generally feature:

• Wider flanges for improved structural stability

• Greater load-bearing capacity

• Better resistance to bending and compression

• Higher structural efficiency for large-span applications

• Superior performance in heavy-duty steel structures

Because of these advantages, H beams have become the preferred structural member for high-rise buildings, bridges, industrial plants, and large steel frame projects.

How to Read an H Beam Size Chart

An H Beam Size Chart provides essential technical data for structural engineers, steel fabricators, architects, project managers, and purchasing professionals.

Typical parameters include:

• Overall Section Height (H)

• Flange Width (B)

• Web Thickness (t₁)

• Flange Thickness (t₂)

• Root Radius (R)

• Cross-sectional Area

• Theoretical Weight per Meter

• Moment of Inertia

• Section Modulus

• Radius of Gyration

This data allows to calculate the structural capacity of the profile, verify its compatibility with the design and estimate the total weight of the structure before manufacture.

For international projects, it is also recommended to check that the dimensions comply with standards such as GB/T, JIS, EN or ASTM, depending on the target market.

HW, HM & HN H Beam Size Chart: Dimensions, Weight & Specifications

The technical data provided in an H beam size chart enables engineers to accurately calculate structural capacity, verify compatibility with project designs, estimate total steel consumption, and optimize fabrication costs before production begins.

For international engineering and procurement projects, it is also important to ensure that beam dimensions comply with the applicable standards required by the destination market. Commonly referenced standards include:

• GB/T (China National Standards)

• JIS (Japanese Industrial Standards)

• EN (European Standards)

• ASTM (American Society for Testing and Materials)

Selecting H beams that conform to the appropriate standard helps ensure regulatory compliance, simplifies international procurement, and guarantees consistent quality and structural performance across global projects.

H HW, HM and HN beam measurement table

Below is the table of dimensions of the H beams corresponding to the HW, HM and HN series, in which you can consult the main dimensions, theoretical weight and other technical parameters used in the design and manufacture of steel structures.

HW H Beam Sizes

HW beams are wide flange H beams with a flange width close to the beam height. This design provides strong load-bearing capacity and structural stability.

Typical HW beam sizes include:

HW beams are commonly used in bridges, high-rise buildings and heavy steel structures.

HM H Beam Sizes

HM beams are medium flange H beams designed for balanced structural performance.

Common HM beam sizes include:

HM beams are widely used in industrial buildings and general steel structure projects.

HN H Beam Sizes

HN beams are narrow flange H beams designed for lighter structural applications.

Typical HN beam sizes include:

HN beams are commonly used for columns and secondary structural components.

How to Choose Between HW, HM, and HN H Beams

Selecting the right H beam series depends on your project's structural requirements, load conditions, budget, and overall design objectives. Although HW, HM, and HN H beams share the same H-shaped cross-section, each series is engineered to perform best in specific applications.

Understanding the characteristics of each beam type helps engineers, contractors, and procurement professionals choose the most efficient structural solution while balancing strength, weight, and cost.

Choose an HW H Beam If:

An HW H beam is the preferred option when maximum structural strength and stability are required.

Choose an HW beam if your project:

• Must support heavy structural loads

• Includes steel columns or high-rise buildings

• Requires excellent resistance to compression and bending

• Prioritizes maximum load-bearing capacity and long-term structural stability

Thanks to their wider flanges and larger cross-sectional area, HW H beams provide outstanding compressive strength and rigidity. They are widely used in industrial plants, bridges, power stations, heavy steel structures, and large-scale infrastructure projects where structural performance is the highest priority.

Choose an HM H Beam If:

An HM H beam offers an ideal balance between structural strength and material efficiency, making it one of the most versatile H beam series.

Choose an HM beam if your project:

• Requires a balanced combination of strength and weight

• Involves commercial buildings, warehouses, or industrial facilities

• Needs reliable primary or secondary structural beams

• Aims to optimize the overall construction budget without sacrificing performance

  
  

Because of their excellent balance between structural capacity and material consumption, HM H beams are among the most commonly specified sections for general structural engineering and steel-frame construction.

Quick Selection Guide

Expert Tip

When selecting an H beam series, consider not only the section dimensions and theoretical weight but also factors such as design loads, span length, support conditions, applicable design standards (GB/T, ASTM, EN, or JIS), fabrication requirements, and overall project budget. Consulting a structural engineer during the design phase helps ensure that the selected beam provides the optimal combination of safety, performance, and cost-effectiveness.

Request the Complete Catalog or Get a Free Quote

Looking for reliable HW, HM, or HN H beam suppliers?

Contact TJMC Steel today to receive:

• A complete product catalog

• Technical consultation from our steel specialists

• Customized product recommendations

• Competitive pricing

• Fast international shipping and export support

Whether your project requires standard structural steel sections or customized H beam solutions, TJMC Steel is committed to delivering high-quality products and professional service to customers worldwide.