I Flange Steel Beams

Reference data and engineering information about i flange steel beams for material properties applications.

flangesteelbeams

Overview

Engineering reference data for I Flange Steel Beams in material science and properties.

$\sigma = \frac{F}{A}$

Force per unit area.

$\varepsilon = \frac{\Delta L}{L_0}$

Change in length per original length.

$\sigma = E \varepsilon$

Stress proportional to strain in elastic region.

$\Delta L = \alpha L_0 \Delta T$

Length change due to temperature.

Symbol	Description	Unit
$\sigma$	Stress	Pa
$\varepsilon$	Strain	—
$E$	Young's modulus	Pa
$\alpha$	Thermal expansion coefficient	1/°C
$\Delta T$	Temperature change	°C

The following table lists the static properties for standard normal flange I-beams (DIN 1025).

16 rows

Normal Flange I-Beams (DIN 1025) - Static Parameters and Dimensions
Designation	Depth h(mm)	Width w(mm)	Web Thickness s(mm)	Sectional Area(cm²)	Weight(kg/m)	Ix(cm⁴)	Iy(cm⁴)	Wx(cm³)	Wy(cm³)
I 80	80	42	3.9	7.58	5.94	77.8	6.29	19.5	3
I 100	100	50	4.5	10.6	8.34	171	12.2	34.2	4.88
I 120	120	58	5.1	14.2	11.1	328	21.5	54.7	7.41
I 140	140	66	5.7	18.3	14.3	573	35.2	81.9	10.7
I 160	160	74	6.3	22.8	17.9	935	54.7	117	14.8
I 180	180	82	6.9	27.9	21.9	1450	81.3	161	19.8
I 200	200	90	7.5	33.5	26.2	2140	117	214	26
I 220	220	98	8.1	39.6	31.1	3060	162	278	33.1
I 240	240	106	8.7	46.1	36.2	4250	221	354	41.7
I 260	260	113	9.4	53.4	41.9	5740	288	442	51
I 300	300	125	10.8	69.1	54.2	9800	451	653	72.2
I 340	340	137	12.2	86.8	68	15700	674	923	98.4
I 360	360	143	13	97.1	76.1	19610	818	1090	114
I 400	400	155	14.4	118	92.4	29210	1160	1460	149
I 450	450	170	16.2	147	115	45850	1730	2040	203
I 500	500	185	18	180	141	68740	2480	2750	268

Source: engineeringtoolbox.com

Useful conversions for the units presented in the property table:

Moment of Inertia (I): $1 \, \text{cm}^4 = 10^4 \, \text{mm}^4 = 10^{-8} \, \text{m}^4 = 0.024 \, \text{in}^4$
Section Modulus (W): $1 \, \text{cm}^3 = 10^3 \, \text{mm}^3 = 10^{-6} \, \text{m}^3 = 0.061 \, \text{in}^3$
Area: $1 \, \text{cm}^2 = 10^2 \, \text{mm}^2 = 10^{-4} \, \text{m}^2 = 0.16 \, \text{in}^2$
Weight per unit length: $1 \, \text{kg/m} = 0.67 \, \text{lb/ft}$