EN 1993-1-1 Steel Section · Section of HEM
HEM 320 — Section Properties & EN 1993-1-1 Classification
HEM 320 is a Class 1 — Plastic
section in S355 (fy = 355 MPa).
h = 359 mm
b = 309 mm
A = 16,150 mm²
Iy = 68,130 cm⁴
Wpl,y = 4564 cm³
EN / NL / DE annexes
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Cross-Section Classification (EN 1993-1-1 Table 5.2)
Steel Grade
γM0
Web (c/tw )
Flange (c/tf )
Class
S235
1.00
11.57 → 1
3.77 → 1
Class 1
S235
1.10
11.57 → 1
3.77 → 1
Class 1
S235
1.05
11.57 → 1
3.77 → 1
Class 1
S275
1.00
11.57 → 1
3.77 → 1
Class 1
S275
1.10
11.57 → 1
3.77 → 1
Class 1
S275
1.05
11.57 → 1
3.77 → 1
Class 1
S355
1.00
11.57 → 1
3.77 → 1
Class 1
S355
1.10
11.57 → 1
3.77 → 1
Class 1
S355
1.05
11.57 → 1
3.77 → 1
Class 1
S420
1.00
11.57 → 1
3.77 → 1
Class 1
S420
1.10
11.57 → 1
3.77 → 1
Class 1
S420
1.05
11.57 → 1
3.77 → 1
Class 1
S460
1.00
11.57 → 1
3.77 → 1
Class 1
S460
1.10
11.57 → 1
3.77 → 1
Class 1
S460
1.05
11.57 → 1
3.77 → 1
Class 1
Property Value
h (mm) 359 b (mm) 309 tw / tf (mm) 21 / 31 r (mm) 27 A (mm²) 16,150 Iy (cm⁴) 68,130 Iz (cm⁴) 19,780 Wel,y (cm³) 3796 Wpl,y (cm³) 4564 iy / iz (mm) 205.4 / 110.7
Design Resistances · γM0
Resistance Value
Npl,Rd 3,795.3 kN Vpl,Rd 1,095.6 kN Mpl,Rd 1,072.5 kNm Mel,Rd 892.1 kNm
Resistance Value
Npl,Rd 3,450.2 kN Vpl,Rd 996 kN Mpl,Rd 975 kNm Mel,Rd 811 kNm
Resistance Value
Npl,Rd 3,614.5 kN Vpl,Rd 1,043.4 kN Mpl,Rd 1,021.5 kNm Mel,Rd 849.6 kNm
Resistance Value
Npl,Rd 4,441.3 kN Vpl,Rd 1,282.1 kN Mpl,Rd 1,255.1 kNm Mel,Rd 1,043.9 kNm
Resistance Value
Npl,Rd 4,037.5 kN Vpl,Rd 1,165.5 kN Mpl,Rd 1,141 kNm Mel,Rd 949 kNm
Resistance Value
Npl,Rd 4,229.8 kN Vpl,Rd 1,221 kN Mpl,Rd 1,195.3 kNm Mel,Rd 994.2 kNm
Resistance Value
Npl,Rd 5,733.3 kN Vpl,Rd 1,655 kN Mpl,Rd 1,620.2 kNm Mel,Rd 1,347.6 kNm
Resistance Value
Npl,Rd 5,212 kN Vpl,Rd 1,504.6 kN Mpl,Rd 1,472.9 kNm Mel,Rd 1,225.1 kNm
Resistance Value
Npl,Rd 5,460.2 kN Vpl,Rd 1,576.2 kN Mpl,Rd 1,543.1 kNm Mel,Rd 1,283.4 kNm
Resistance Value
Npl,Rd 6,783 kN Vpl,Rd 1,958.1 kN Mpl,Rd 1,916.9 kNm Mel,Rd 1,594.3 kNm
Resistance Value
Npl,Rd 6,166.4 kN Vpl,Rd 1,780.1 kN Mpl,Rd 1,742.6 kNm Mel,Rd 1,449.4 kNm
Resistance Value
Npl,Rd 6,460 kN Vpl,Rd 1,864.8 kN Mpl,Rd 1,825.6 kNm Mel,Rd 1,518.4 kNm
Resistance Value
Npl,Rd 7,429 kN Vpl,Rd 2,144.6 kN Mpl,Rd 2,099.4 kNm Mel,Rd 1,746.2 kNm
Resistance Value
Npl,Rd 6,753.6 kN Vpl,Rd 1,949.6 kN Mpl,Rd 1,908.6 kNm Mel,Rd 1,587.4 kNm
Resistance Value
Npl,Rd 7,075.2 kN Vpl,Rd 2,042.4 kN Mpl,Rd 1,999.5 kNm Mel,Rd 1,663 kNm
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HEM 320 — Cross-Section Classification & Resistances
This page shows pre-computed EN 1993-1-1 design values for the HEM 320 HEM section. The governing cross-section class is 1 (Class 1 — Plastic), which determines whether the section may develop its full plastic moment capacity (Class 1–2) or is limited to the elastic moment (Class 3–4). Npl,Rd, Vpl,Rd, Mpl,Rd, and Mel,Rd are shown for all combinations of steel grade (S235 to S460) and national annex (EN γM0=1.00, NL γM0=1.10, DE γM0=1.05).