Asymmetric H‑Beam is a non‑symmetrical structural H‑section designed for engineering applications where standard H‑beams cannot meet specific load or design requirements. Unlike conventional H‑beams with equal flange widths, asymmetric H‑beams feature different flange dimensions, non‑uniform thickness, or custom geometry, allowing engineers to optimize structural performance while reducing weight and material cost.
These beams are commonly used in machinery frames, equipment structures, industrial components, and custom fabrication projects where unique load paths or installation constraints require non‑standard profiles.
Asymmetric H‑Beams can be produced in various steel grades and customized dimensions to meet project‑specific requirements.
🟦 Applicable Standards
Asymmetric H‑Beams are typically produced according to:
Customer‑specified drawings
Engineering design requirements
General structural steel standards such as:
ASTM A36 / A572
EN10025 (S235 / S275 / S355)
JIS G3101 / G3106
AS/NZS Grade 300 / 350
(Asymmetric profiles are not governed by a single dedicated standard; they follow the base material standard + dimensional tolerances per project.)
🟦 Available Grades
ASTM A36 / A572
S235 / S275 / S355
SS400 / SM490
Grade 300 / Grade 350
These grades provide flexibility for both general and high‑strength structural applications.
🟦 Section Characteristics
Asymmetric H‑Beams may include:
Unequal flange widths
Different flange thicknesses
Non‑uniform web thickness
Custom height‑to‑width ratios
Special shapes for machinery or structural integration
These characteristics allow engineers to optimize:
Load distribution
Structural stiffness
Weight reduction
Installation space
Fabrication efficiency
🟦 Dimensions Range
(Customizable based on project requirements)
Parameter
Range
Height (H)
100–1000 mm
Flange Width (B1 / B2)
80–400 mm (asymmetric)
Web Thickness (t1)
5–30 mm
Flange Thickness (t2 / t3)
6–50 mm
Length
6 m / 9 m / 12 m / custom
Tolerance
As per base material standard
KS D 3502:2013
Designation
Unit Weight (kg/m)
H x Bt x Bb (mm)
tw (mm)
tf (mm)
r (mm)
Sectional Area (cm²)
312 x 234 x 344
111
312 x 234 x 344
12
18
22
141.3
320 x 236 x 346
134
320 x 236 x 346
14
22
22
170.8
328 x 238 x 348
158
328 x 238 x 348
16
26
22
200.7
336 x 240 x 350
181
336 x 240 x 350
18
30
22
230.8
🟦 Mechanical Properties
Mechanical properties depend on the selected steel grade. Examples:
S355JR
Property
Value
Yield Strength
≥ 355 MPa
Tensile Strength
470–630 MPa
Elongation
≥ 22%
ASTM A572 Grade 50
Property
Value
Yield Strength
≥ 345 MPa
Tensile Strength
≥ 450 MPa
Elongation
≥ 18%
🟦 Chemical Composition (Typical)
S355JR
Element
Max (%)
C
0.24
Mn
1.60
P
0.040
S
0.040
Si
0.55
🟦 Applications
Machinery and equipment frames
Industrial structural components
Custom engineering structures
Welded assemblies
Structural reinforcement
Projects requiring non‑symmetrical load distribution
🟦 Why Use Asymmetric H‑Beam
Optimized structural performance for specific load paths
Reduced weight and material cost
Greater design flexibility
Suitable for custom engineering and machinery applications
Can be produced in multiple steel grades and dimensions
