COUPLINGS

Technical DataPhysical and Mechanical Property of Metals Physical PropertyMetal materialRatioLongitudinal elasticmodulus ×10 3[N/mm 2 ]Rigiditymodulus ×10 3[N/mm 2 ]Thermalconductivity[W/(M·k)]Thermalexpansion×10 −6[1/k]Low-carbon steel (0.08C to 0.12C) 7.86 206 79 57 to 60 11.3 to 11.6Medium carbon steel (0.40C to 0.50C) 7.84 205 82 44 10.7High-carbon steel (0.8C to 1.6C) 7.81 to 7.83 196 to 202 80 to 81 37 to 43 9.6 to 10.9Chrome steel (SCr430) 7.84 — — 44.8 12.6 (300 to 470k)Chrome-molybdenum steel (SCM440) 7.83 — — 42.7 12.3Martensitic stainless steel (SUS410) 7.80 200 — 24.9 9.9Austenitic stainless steel (SUS304) 8.03 197 73.7 15 17.3Tool steel (SKD6) 7.75 206 82 42.2 (373k) 10.8Gray iron (FC) 7.05 to 7.3 73.6 to 127.5 28.4 to 39.2 44 to 58.6 9.2 to 11.8Nodular graphite cast iron (FCD) 7.10 161 78 33.5 to 37.7 10Duralumin (A2017-T4) 2.79 69 — 201 23.4Super duralumin (A2024-T4) 2.77 74 29 121 23.2Extra super duralumin (A7075-T6) 2.80 72 28 130 23.6Lautan (AC2A-T6) 2.79 72 — 121 24.0Silumin (AC3A-F) 2.66 71 — 121 20.4Aluminum casting alloy (AC4CH-T6) 2.68 72 — 151 21.5Aluminum die casting alloy (ADC12) 2.70 72 — 100 21.0Zinc die casting alloy (ZDC-2) 6.60 89 — 113 27.4 Mechanical PropertyMetal materialYield point[N/mm 2 ]Tensile strength[N/mm 2 ]Hardness[HB]S20C-N 245 402 116 to 174S30C-N 284 471 137 to 197S30C-H 333 539 152 to 212S45C-N 343 569 167 to 229S45-H 490 686 201 to 269SS400 216 402 to 510 —SCM420 — 932 262 to 352SCM435 785 932 269 to 331SUS303 206 520 187 or lessSUS304 206 520 200 or lessFC200 — 200 223 or lessFC250 — 250 241 or lessFC300 — 300 262 or lessFC350 — 350 277 or lessFCD400 250 400 201 or lessFCD450 280 450 143 to 217FCD500 320 500 170 to 241A2014-T4 245 412 —A2017-T4 196 353 —A7075-T6 471 539 —Technicaldata112www.feyc.es