ASTM A106 A36 SS400 S235jr Steel Purlins U Steel Channels
U Channel Steel Introduction
U-channel steel, often referred to as U-channel bar or U-beam, is a versatile hot-rolled or cold-formed structural steel product defined by its distinct U-shaped cross-section. Comprising a flat vertical web and two parallel horizontal flanges (extending outward from the top and bottom of the web), this design is engineered for optimal bending resistance, load-bearing stability, and ease of integration—making it a staple in construction, manufacturing, and infrastructure projects globally.
Key Performance Characteristics
Superior Bending Resistance: The U-shape maximizes the "section modulus" (a measure of stiffness) by concentrating material in the flanges—where bending stresses are highest. This allows it to withstand large vertical/horizontal bending loads without excessive deflection.
Strong Shear Capacity: The vertical web is engineered to absorb shear forces from dynamic or static loads, ensuring structural integrity in load-bearing systems (e.g., beams, supports).
Enhanced Stability: When paired with other steel members (e.g., back-to-back U-channels, plates, or I-beams), it provides robust torsional and lateral stability—critical for frames, trusses, and racking.
Efficient Material Utilization: The cross-sectional design minimizes material waste by placing steel in high-stress areas (flanges and fillets) while using a thinner web for shear resistance.
Easy Fabrication & Integration: Its regular U-shape supports standard processing (cutting, drilling, welding, bending) and seamless connection to bolts, brackets, or other components—streamlining assembly.
Common Steel Grades
The base material aligns with global structural steel standards, selected based on strength and environment:
L Shapes (Equal leg)
|
|
Length of leg (mm) |
Thickness (mm) |
|||||||||
|
Producto |
Calidad |
Mín 团 |
Nom |
Máx |
Mín |
Nom |
Máx |
|
|
|
|
|
PERFIL ANGULAR 3/4"X1/8"X6M |
Legítimo |
18.26 |
19.05 |
19.84 |
2.97 |
3.18 |
3.38 |
|
|
|
|
|
PERFIL ANGULAR 3/4"X1/8X6MC |
Comercial |
18.26 |
19.05 |
19.84 |
2.00 |
2.20 |
2.40 |
|
|
|
|
|
PERFIL ANGULAR 3/4"X1/8X6M R |
Milimétrico |
18.26 |
19.05 |
19.84 |
2.60 |
2.70 |
2.80 |
|
|
|
|
|
PERFIL ANGULAR 1"X1/4"X6M |
Legítimo |
24.61 |
25.40 |
26.19 |
6.10 |
6.35 |
6.60 |
|
|
|
|
|
PERFIL ANGULAR 1"X1/8"X6M |
Legítimo |
24.61 |
25.40 |
26.19 |
2.97 |
3.18 |
3.38 |
|
|
|
|
|
PERFIL ANGULAR 1"X3/16"X6M |
Legítimo |
24.61 |
25.40 |
26.19 |
4.56 |
4.76 |
4.97 |
|
|
|
|
|
PERFIL ANGULAR 1"X1/8"X6MC |
Comercial |
24.61 |
25.40 |
26.19 |
2.10 |
2.20 |
2.30 |
|
|
|
|
|
PERFIL ANGULAR 1"X1/8X6M R |
Milimétrico |
24.61 |
25.40 |
26.19 |
2.60 |
2.70 |
2.80 |
|
|
|
|
|
PERFIL ANGULAR 1 1/4"X1/8X6MC |
Comercial |
30.51 |
31.75 |
32.89 |
2.10 |
2.20 |
2.30 |
|
|
|
|
|
PERFIL ANGULAR 1 1/4"X1/8X6M R |
Milimétrico |
30.51 |
31.75 |
32.89 |
2.60 |
2.70 |
2.80 |
|
|
|
|
|
PERFIL ANGULAR 1 1/4"X1/8"X6M |
Legítimo |
30.56 |
31.75 |
32.94 |
2.92 |
3.18 |
3.43 |
|
|
|
|
|
PERFIL ANGULAR 1 1/4"X3/16"X6M |
Legítimo |
30.56 |
31.75 |
32.94 |
4.51 |
4.76 |
5.02 |
|
|
|
|
|
PERFIL ANGULAR 1 1/4"X1/4"X6M |
Legítimo |
30.56 |
31.75 |
32.94 |
6.10 |
6.35 |
6.60 |
|
|
|
|
|
PERFIL ANGULAR 1 1/2"X1/8"X6M |
Legítimo |
36.91 |
38.10 |
39.29 |
2.92 |
3.18 |
3.43 |
|
|
|
|
|
PERFIL ANGULAR 1 1/2"X3/16"X6M |
Legítimo |
36.91 |
38.10 |
39.29 |
4.51 |
4.76 |
5.02 |
|
|
|
|
|
PERFIL ANGULAR 1 1/2"X1/4"X6M |
Legítimo |
36.91 |
38.10 |
39.29 |
6.10 |
6.35 |
6.60 |
|
|
|
|
|
PERFIL ANGULAR 1 1/2"X1/8X6M R |
Milimétrico |
36.91 |
38.10 |
39.29 |
2.60 |
2.70 |
2.80 |
|
|
|
|
|
PERFIL ANGULAR 1 1/2"X1/8X6MC |
Comercial |
36.91 |
38.10 |
39.29 |
2.10 |
2.20 |
2.30 |
|
|
|
|
|
PERFIL ANGULAR 1 1/2"X3/16X6M R |
Milimétrico |
36.91 |
38.10 |
39.29 |
3.90 |
4.00 |
4.10 |
|
|
|
|
|
PERFIL ANGULAR 2"X1/8"X6M R |
Milimétrico |
49.00 |
50.80 |
51.60 |
2.60 |
2.70 |
2.80 |
|
|
|
|
|
PERFIL ANGULAR 2"X1/8"X6M |
Legítimo |
49.61 |
50.80 |
51.99 |
2.92 |
3.18 |
3.43 |
|
|
|
|
|
PERFIL ANGULAR 2"X3/16"X6M |
Legítimo |
49.61 |
50.80 |
51.99 |
4.51 |
4.76 |
5.02 |
|
|
|
|
|
PERFIL ANGULAR 2"X1/4"X6M |
Legítimo |
49.61 |
50.80 |
51.99 |
6.10 |
6.35 |
6.60 |
|
|
|
|
|
PERFIL ANGULAR 2"X3/8"X6M |
Legítimo |
49.61 |
50.80 |
51.99 |
9.27 |
9.53 |
9.78 |
|
|
|
|
|
PERFIL ANGULAR 2 1/2"X3/16"X6M |
Legítimo |
61.91 |
63.50 |
65.09 |
4.46 |
4.76 |
5.07 |
|
|
|
|
|
PERFIL ANGULAR 2 1/2"X1/4"X6M |
Legítimo |
61.91 |
63.50 |
65.09 |
5.97 |
6.35 |
6.73 |
|
|
|
|
|
PERFIL ANGULAR 2 1/2"X3/8"X6M |
Legítimo |
61.91 |
63.50 |
65.09 |
9.14 |
9.53 |
9.91 |
|
|
|
|
|
PERFIL ANGULAR 3"X3/16"X6M |
Legítimo |
73.82 |
76.20 |
79.38 |
4.4577 |
4.76 |
5.0673 |
|
|
|
|
|
PERFIL ANGULAR 3"X1/4"X6M |
Legítimo |
73.82 |
76.20 |
79.38 |
2.41935 |
6.35 |
6.731 |
|
|
|
|
|
PERFIL ANGULAR 3"X1/2"X6M |
Legítimo |
73.82 |
76.20 |
79.38 |
No esp. |
12.70 |
No esp. |
|
|
|
|
|
PERFIL ANGULAR 3"X3/8"X6M |
Legítimo |
73.82 |
76.20 |
79.38 |
No esp. |
9.53 |
No esp. |
|
|
|
|
|
PERFIL ANGULAR 4"X1/4"X6M |
Legítimo |
99.22 |
101.60 |
104.78 |
No esp. |
6.35 |
No esp. |
|
|
|
|
|
PERFIL ANGULAR 4"X3/8"X6M |
Legítimo |
99.22 |
101.60 |
104.78 |
No esp. |
9.53 |
No esp. |
|
|
|
|
|
PERFIL ANGULAR 4"X1/2"X6M |
Legítimo |
99.22 |
101.60 |
104.78 |
No esp. |
12.70 |
No esp. |
|
|
|
|
Measurement method: Trace reference material from end to end and measure between the reference material and the shape at its greatest distance.
|
Product |
Width |
Maximum straightness, mm |
|
|
L Shape |
< 3 inches |
25 mm |
|
|
≥3 inches |
12.5 mm |
|
|
|
Round bar |
|
25 mm |
|
|
Square bar |
|
25 mm |
|
|
Flat |
|
25 mm |
|
|
T Shape |
|
25 mm |
|
|
C Shape |
|
25 mm |
|
|
Yield point, psi (Autographic Diagram Method according to ASTM A370 standard) |
36,000 |
|
Tensile strength, psi |
58,000 - 80,000 |
|
Elongation in 8 in, % |
20 |
De acuerdo a lo establecido en la norma ASTM A36
|
Element |
Specification |
|
C |
0.26 |
|
Mn |
|
|
P |
0.04 |
|
S |
0.05 |
|
Si, máx |
0.40 |
According to ASTM A6 Standard, Structural products shall be free of injurious
defects and shall have a workmanlike finish.
Free of rust
Cut: straight cut
Tie with strapping or wire rod
Protected to prevent rust in transport
Quality certificate must include heat number, chemical composition, tensile test results
Katherine A. Fogg
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