... WL, Rod . Material grade :M1700,M1800,M1900.2) Standard dimension (mm):3/6,4/9,6/12,7/14,9 ... 4.physical property volume density5.5~5.6g/cm³bend strength 5.5~25kg/cm²vickers-hardness(hv)570kg ... /mm²porosity rate7.4%water absortion1.2%hot extensiblity4%5.The Max temperature of elements in ... Recommend surface load: Furnace Temp(°c)14001500160016501700Surface looad of hot zone(W/cm²)<18<15<12<10<87. ...