457x191 UB — Sizes, Dimensions & Properties

8 sizes in the 457x191 serial size group. All dimensions in mm, section properties in cm units.

Designation	Mass (kg/m)	h (mm)	b (mm)	tw (mm)	tf (mm)	A (cm2)	Ixx (cm4)	Iyy (cm4)	Zxx (cm3)	Sxx (cm3)	rxx (cm)	ryy (cm)
457x191x161	161.4	492	199.4	18	32	206	79,800	4,250	3,240	3,780	19.7	4.55
457x191x133	133.3	480.6	196.7	15.3	26.3	170	63,800	3,350	2,660	3,070	19.4	4.44
457x191x106	105.8	469.2	194	12.6	20.6	135	48,900	2,510	2,080	2,390	19	4.32
457x191x98	98.3	467.2	192.8	11.4	19.6	125	45,700	2,350	1,960	2,230	19.1	4.33
457x191x89	89.3	463.4	191.9	10.5	17.7	114	41,000	2,090	1,770	2,010	19	4.29
457x191x82	82	460	191.3	9.9	16	104	37,100	1,870	1,610	1,830	18.8	4.23
457x191x74	74.3	457	190.4	9	14.5	94.6	33,300	1,670	1,460	1,650	18.8	4.2
457x191x67	67.1	453.4	189.9	8.5	12.7	85.5	29,400	1,450	1,300	1,470	18.5	4.12

457x191x161 UB

Designation: 457x191x161
Serial Size: 457x191
Mass per Metre: 161.4 kg/m
Depth of Section (h): 492 mm
Width of Section (b): 199.4 mm
Web Thickness (tw): 18 mm
Flange Thickness (tf): 32 mm
Root Radius (r): 10.2 mm
Depth Between Fillets (d): 407.6 mm
Local Buckling Ratio d/tw: 22.6
Local Buckling Ratio cf/tf: 3.12
Second Moment of Area Ixx: 79,800 cm4
Second Moment of Area Iyy: 4,250 cm4
Elastic Modulus Zxx: 3,240 cm3
Elastic Modulus Zyy: 426 cm3
Plastic Modulus Sxx: 3,780 cm3
Plastic Modulus Syy: 672 cm3
Radius of Gyration rxx: 19.7 cm
Radius of Gyration ryy: 4.55 cm
Cross-Sectional Area: 206 cm2
Buckling Parameter (u): 0.882
Torsional Index (x): 16.4
Warping Constant (Iw): 2.25 dm6
Torsional Constant (It): 515 cm4
Surface Area per Metre: 1.73 m2/m
Surface Area per Tonne: 10.7 m2/t

457x191x133 UB

Designation: 457x191x133
Serial Size: 457x191
Mass per Metre: 133.3 kg/m
Depth of Section (h): 480.6 mm
Width of Section (b): 196.7 mm
Web Thickness (tw): 15.3 mm
Flange Thickness (tf): 26.3 mm
Root Radius (r): 10.2 mm
Depth Between Fillets (d): 407.6 mm
Local Buckling Ratio d/tw: 26.6
Local Buckling Ratio cf/tf: 3.74
Second Moment of Area Ixx: 63,800 cm4
Second Moment of Area Iyy: 3,350 cm4
Elastic Modulus Zxx: 2,660 cm3
Elastic Modulus Zyy: 341 cm3
Plastic Modulus Sxx: 3,070 cm3
Plastic Modulus Syy: 535 cm3
Radius of Gyration rxx: 19.4 cm
Radius of Gyration ryy: 4.44 cm
Cross-Sectional Area: 170 cm2
Buckling Parameter (u): 0.88
Torsional Index (x): 19.6
Warping Constant (Iw): 1.73 dm6
Torsional Constant (It): 292 cm4
Surface Area per Metre: 1.7 m2/m
Surface Area per Tonne: 12.8 m2/t

457x191x106 UB

Designation: 457x191x106
Serial Size: 457x191
Mass per Metre: 105.8 kg/m
Depth of Section (h): 469.2 mm
Width of Section (b): 194 mm
Web Thickness (tw): 12.6 mm
Flange Thickness (tf): 20.6 mm
Root Radius (r): 10.2 mm
Depth Between Fillets (d): 407.6 mm
Local Buckling Ratio d/tw: 32.3
Local Buckling Ratio cf/tf: 4.71
Second Moment of Area Ixx: 48,900 cm4
Second Moment of Area Iyy: 2,510 cm4
Elastic Modulus Zxx: 2,080 cm3
Elastic Modulus Zyy: 259 cm3
Plastic Modulus Sxx: 2,390 cm3
Plastic Modulus Syy: 405 cm3
Radius of Gyration rxx: 19 cm
Radius of Gyration ryy: 4.32 cm
Cross-Sectional Area: 135 cm2
Buckling Parameter (u): 0.877
Torsional Index (x): 24.4
Warping Constant (Iw): 1.27 dm6
Torsional Constant (It): 146 cm4
Surface Area per Metre: 1.67 m2/m
Surface Area per Tonne: 15.8 m2/t

457x191x98 UB

Designation: 457x191x98
Serial Size: 457x191
Mass per Metre: 98.3 kg/m
Depth of Section (h): 467.2 mm
Width of Section (b): 192.8 mm
Web Thickness (tw): 11.4 mm
Flange Thickness (tf): 19.6 mm
Root Radius (r): 10.2 mm
Depth Between Fillets (d): 407.6 mm
Local Buckling Ratio d/tw: 35.8
Local Buckling Ratio cf/tf: 4.92
Second Moment of Area Ixx: 45,700 cm4
Second Moment of Area Iyy: 2,350 cm4
Elastic Modulus Zxx: 1,960 cm3
Elastic Modulus Zyy: 243 cm3
Plastic Modulus Sxx: 2,230 cm3
Plastic Modulus Syy: 379 cm3
Radius of Gyration rxx: 19.1 cm
Radius of Gyration ryy: 4.33 cm
Cross-Sectional Area: 125 cm2
Buckling Parameter (u): 0.881
Torsional Index (x): 25.7
Warping Constant (Iw): 1.18 dm6
Torsional Constant (It): 121 cm4
Surface Area per Metre: 1.67 m2/m
Surface Area per Tonne: 17 m2/t

457x191x89 UB

Designation: 457x191x89
Serial Size: 457x191
Mass per Metre: 89.3 kg/m
Depth of Section (h): 463.4 mm
Width of Section (b): 191.9 mm
Web Thickness (tw): 10.5 mm
Flange Thickness (tf): 17.7 mm
Root Radius (r): 10.2 mm
Depth Between Fillets (d): 407.6 mm
Local Buckling Ratio d/tw: 38.8
Local Buckling Ratio cf/tf: 5.42
Second Moment of Area Ixx: 41,000 cm4
Second Moment of Area Iyy: 2,090 cm4
Elastic Modulus Zxx: 1,770 cm3
Elastic Modulus Zyy: 218 cm3
Plastic Modulus Sxx: 2,010 cm3
Plastic Modulus Syy: 338 cm3
Radius of Gyration rxx: 19 cm
Radius of Gyration ryy: 4.29 cm
Cross-Sectional Area: 114 cm2
Buckling Parameter (u): 0.88
Torsional Index (x): 28.3
Warping Constant (Iw): 1.04 dm6
Torsional Constant (It): 90.7 cm4
Surface Area per Metre: 1.66 m2/m
Surface Area per Tonne: 18.6 m2/t

457x191x82 UB

Designation: 457x191x82
Serial Size: 457x191
Mass per Metre: 82 kg/m
Depth of Section (h): 460 mm
Width of Section (b): 191.3 mm
Web Thickness (tw): 9.9 mm
Flange Thickness (tf): 16 mm
Root Radius (r): 10.2 mm
Depth Between Fillets (d): 407.6 mm
Local Buckling Ratio d/tw: 41.2
Local Buckling Ratio cf/tf: 5.98
Second Moment of Area Ixx: 37,100 cm4
Second Moment of Area Iyy: 1,870 cm4
Elastic Modulus Zxx: 1,610 cm3
Elastic Modulus Zyy: 196 cm3
Plastic Modulus Sxx: 1,830 cm3
Plastic Modulus Syy: 304 cm3
Radius of Gyration rxx: 18.8 cm
Radius of Gyration ryy: 4.23 cm
Cross-Sectional Area: 104 cm2
Buckling Parameter (u): 0.877
Torsional Index (x): 30.9
Warping Constant (Iw): 0.922 dm6
Torsional Constant (It): 69.2 cm4
Surface Area per Metre: 1.65 m2/m
Surface Area per Tonne: 20.1 m2/t

457x191x74 UB

Designation: 457x191x74
Serial Size: 457x191
Mass per Metre: 74.3 kg/m
Depth of Section (h): 457 mm
Width of Section (b): 190.4 mm
Web Thickness (tw): 9 mm
Flange Thickness (tf): 14.5 mm
Root Radius (r): 10.2 mm
Depth Between Fillets (d): 407.6 mm
Local Buckling Ratio d/tw: 45.3
Local Buckling Ratio cf/tf: 6.57
Second Moment of Area Ixx: 33,300 cm4
Second Moment of Area Iyy: 1,670 cm4
Elastic Modulus Zxx: 1,460 cm3
Elastic Modulus Zyy: 176 cm3
Plastic Modulus Sxx: 1,650 cm3
Plastic Modulus Syy: 272 cm3
Radius of Gyration rxx: 18.8 cm
Radius of Gyration ryy: 4.2 cm
Cross-Sectional Area: 94.6 cm2
Buckling Parameter (u): 0.877
Torsional Index (x): 33.9
Warping Constant (Iw): 0.818 dm6
Torsional Constant (It): 51.8 cm4
Surface Area per Metre: 1.64 m2/m
Surface Area per Tonne: 22.1 m2/t

457x191x67 UB

Designation: 457x191x67
Serial Size: 457x191
Mass per Metre: 67.1 kg/m
Depth of Section (h): 453.4 mm
Width of Section (b): 189.9 mm
Web Thickness (tw): 8.5 mm
Flange Thickness (tf): 12.7 mm
Root Radius (r): 10.2 mm
Depth Between Fillets (d): 407.6 mm
Local Buckling Ratio d/tw: 48
Local Buckling Ratio cf/tf: 7.48
Second Moment of Area Ixx: 29,400 cm4
Second Moment of Area Iyy: 1,450 cm4
Elastic Modulus Zxx: 1,300 cm3
Elastic Modulus Zyy: 153 cm3
Plastic Modulus Sxx: 1,470 cm3
Plastic Modulus Syy: 237 cm3
Radius of Gyration rxx: 18.5 cm
Radius of Gyration ryy: 4.12 cm
Cross-Sectional Area: 85.5 cm2
Buckling Parameter (u): 0.872
Torsional Index (x): 37.9
Warping Constant (Iw): 0.705 dm6
Torsional Constant (It): 37.1 cm4
Surface Area per Metre: 1.63 m2/m
Surface Area per Tonne: 24.3 m2/t

457x191 UB — Overview

The 457x191 serial size group contains 8 sections, ranging from 67.1 kg/m to 161.4 kg/m. All sections in this group share the same nominal depth and width but differ in web and flange thickness, which affects the weight and structural capacity.

Section properties are sourced from the Tata Steel Blue Book / SCI P363. For structural design to BS EN 1993-1-1 (Eurocode 3), use these properties with the appropriate partial factors from the UK National Annex.

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Section properties from Tata Steel Blue Book / SCI P363 / BS 4-1:2005.