Catalogo ABC 54

The data contained in this table is derived from UNI 3823. The rated breaking load decreases as the diameter increases Diameter mm CLASSES A B C D E Rated breaking load - Kg/mm2 0,10 175 ÷ 210 210 ÷ 240 240 ÷ 275 275 ÷ 305  305 0,15 170 ÷ 205 205 ÷ 235 235 ÷ 270 270 ÷ 300  300 0,20 165 ÷ 200 200 ÷ 235 235 ÷ 265 265 ÷ 295  295 0,25 160 ÷ 195 195 ÷ 230 230 ÷ 260 260 ÷ 290  290 0,30 160 ÷ 195 195 ÷ 230 230 ÷ 260 260 ÷ 290  290 0,35 160 ÷ 195 195 ÷ 225 225 ÷ 255 255 ÷ 285  285 0,40 160 ÷ 195 195 ÷ 225 225 ÷ 255 255 ÷ 285  285 0,45 155 ÷ 190 190 ÷ 220 220 ÷ 250 250 ÷ 280  280 0,50 155 ÷ 190 190 ÷ 220 220 ÷ 250 250 ÷ 280  280 0,55 155 ÷ 190 190 ÷ 220 220 ÷ 250 250 ÷ 280  280 0,60 150 ÷ 185 185 ÷ 215 215 ÷ 245 245 ÷ 275  275 0,70 150 ÷ 185 185 ÷ 215 215 ÷ 245 240 ÷ 270  275 0,80 145 ÷ 180 180 ÷ 210 210 ÷ 240 240 ÷ 270  270 0,90 140 ÷ 175 175 ÷ 205 205 ÷ 235 235 ÷ 265  265 1,00 140 ÷ 175 175 ÷ 205 205 ÷ 235 140 ÷ 175  265 1,10 140 ÷ 175 175 ÷ 205 205 ÷ 235 235 ÷ 265  265 1,20 140 ÷ 170 170 ÷ 200 200 ÷ 230 230 ÷ 255  255 1,40 135 ÷ 170 170 ÷ 200 200 ÷ 230 230 ÷ 255  255 1,50 135 ÷ 165 165 ÷ 195 195 ÷ 225 225 ÷ 250  250 1,60 135 ÷ 160 160 ÷ 190 190 ÷ 220 220 ÷ 245  245 1,80 130 ÷ 155 155 ÷ 180 180 ÷ 210 210 ÷ 235  235 2,00 130 ÷ 150 150 ÷ 175 175 ÷ 200 200 ÷ 225  225 Diameter mm CLASSES A B C D E Rated breaking load - Kg/mm2 2,10 130 ÷ 150 150 ÷ 175 175 ÷ 200 200 ÷ 225  225 2,20 130 ÷ 150 150 ÷ 175 175 ÷ 200 200 ÷ 220  220 2,30 130 ÷ 150 150 ÷ 170 170-195 195 ÷ 215  215 2,50 130 ÷ 150 150 ÷ 170 170 ÷ 195 195 ÷ 215  215 2,80 125 ÷ 145 145 ÷ 165 165 ÷ 190 190 ÷ 205  205 3,00 125 ÷ 140 140 ÷ 160 160 ÷ 180 180 ÷ 200  200 3,20 125 ÷ 140 140 ÷ 160 160 ÷ 180 180 ÷ 200  200 3,50 125 ÷ 140 140 ÷ 160 160 ÷ 180 180 ÷ 200  200 3,80 115 ÷ 135 135 ÷ 155 155 ÷ 175 175 ÷ 195  195 4,00 115 ÷ 135 135 ÷ 155 155 ÷ 175 175 ÷ 195  195 4,50 110 ÷ 125 125 ÷ 140 140 ÷ 155 155 ÷ 170  170 5,00 110 ÷ 125 125 ÷ 140 140 ÷ 155 155 ÷ 170  170 5,50 110 ÷ 125 125 ÷ 140 140 ÷ 155 155 ÷ 170  170 6,00 105 ÷ 120 120 ÷ 135 135 ÷ 150 150 ÷ 165  165 7,00 100 ÷ 115 115 ÷ 130 130 ÷ 145 140 ÷ 160  160 8,00 100 ÷ 115 115 ÷ 130 130 ÷ 145 — — 9,00 100 ÷ 115 115 ÷ 130 130 ÷ 145 — — 10,00 95 ÷ 110 110 ÷ 125 — — — 11,00 95 ÷ 110 110 ÷ 125 — — — 12,00 95 ÷ 110 110 ÷ 125 — — — Type, classifications, tests Round steel wires for springs are divided into the following classes: Class A - low resistance Class B - medium resistance Class C - high resistance Class D - piano Class E - super-piano