Stainless steel bars (round, flat, hex) · Size & tolerance table

Stainless bar weights: round, square, hex and flat

Standard: EN 10060 / EN 10059 / EN 10061 / EN 10058 (sizes) · calculated masses

Masses are theoretical, for austenitic stainless steel (304, 316, 321) at 7.93 kg/dm³: round 0.006228 × d², square 0.00793 × a², hexagon 0.006868 × s² (across flats), flat 0.00793 × width × thickness — dimensions in mm, mass in kg/m.

Ferritic and martensitic grades (430, 410, 420) are about 3% lighter (7.70 kg/dm³); duplex 2205 about 1.6% lighter (7.80 kg/dm³). For other sizes use the steel weight calculator.

Round, square and hexagon bars

Size mm	Round kg/m	Square kg/m	Hexagon kg/m
3	0.056	0.071	0.062
4	0.100	0.127	0.110
5	0.156	0.198	0.172
6	0.224	0.285	0.247
8	0.399	0.508	0.440
10	0.623	0.793	0.687
12	0.897	1.142	0.989
14	1.221	1.554	1.346
16	1.594	2.030	1.758
18	2.018	2.569	2.225
20	2.491	3.172	2.747
22	3.014	3.838	3.324
25	3.893	4.956	4.292
28	4.883	6.217	5.384
30	5.605	7.137	6.181
32	6.378	8.120	7.032
35	7.630	9.714	8.413
40	9.965	12.69	10.99
45	12.61	16.06	13.91
50	15.57	19.83	17.17
55	18.84	23.99	20.77
60	22.42	28.55	24.72
65	26.31	33.50	29.02
70	30.52	38.86	33.65
75	35.03	44.61	38.63
80	39.86	50.75	43.95
90	50.45	64.23	55.63
100	62.28	79.30	68.68
110	75.36	95.95	–
120	89.69	114.19	–
130	105.26	134.02	–
140	122.07	155.43	–
150	140.13	178.43	–
160	159.44	203.01	–
180	201.79	256.93	–
200	249.13	317.20	–

Flat bars — mass per metre (kg/m)

Flat	Thickness (mm)
Width mm	3 mm	4 mm	5 mm	6 mm	8 mm	10 mm	12 mm	15 mm	20 mm	25 mm
20	0.48	0.63	0.79	0.95	1.27	1.59	1.90	2.38	–	–
25	0.59	0.79	0.99	1.19	1.59	1.98	2.38	2.97	3.97	–
30	0.71	0.95	1.19	1.43	1.90	2.38	2.85	3.57	4.76	5.95
40	0.95	1.27	1.59	1.90	2.54	3.17	3.81	4.76	6.34	7.93
50	1.19	1.59	1.98	2.38	3.17	3.97	4.76	5.95	7.93	9.91
60	1.43	1.90	2.38	2.85	3.81	4.76	5.71	7.14	9.52	11.90
80	1.90	2.54	3.17	3.81	5.08	6.34	7.61	9.52	12.69	15.86
100	2.38	3.17	3.97	4.76	6.34	7.93	9.52	11.90	15.86	19.83
120	2.85	3.81	4.76	5.71	7.61	9.52	11.42	14.27	19.03	23.79
150	3.57	4.76	5.95	7.14	9.52	11.90	14.27	17.84	23.79	29.74

Notes

Hexagons above 100 mm across flats are not usually stocked.
Hot-rolled flats have slightly rounded edges and weigh a little less than the figure; cut-from-plate flats weigh the full figure.