Appendix A1Kg/mm2=1422
58PSI 1N/mm2=1Mpa 1N/mm2=145PSI 1Kg=2
20462Lb 1KSI=1000PSI 0
3045m=1ft=12inchCu=Copper Sn=Tin Ni=Nickel Be=Beryllium Co=Cobalt Fe=Iron Zn=Zinc Pb=Lead Mg=Magnesium Mn=Manganese Al=Aluminum C=CarbonStandardItemHeat TreatedHardness硬度Nickel Silver镍白铜(C7701)AN00(A000)'-------100-130HV301 1/4H'-------250-310HV-----Detail For Alloy Material StaNickel Silver镍白铜C7521 JIS STD1/2H C7521-------150~180HV----Full HardC7521------->150HV1/4HC7521-------95~138HV--------Nickel Silver镍白铜C7701 JIS STDC77000 ASTM STD1/2HC77000 / C7701-------150~210HV176~213HVFull HardC77000 / C7701-------180~240HVExtra HardC77000 / C7701-------3/4HC77000 / C7701-----------1/4HC77000 / C7701-------120~170HV--------210~260HV--------Nickel Silver镍白铜C7521R-OA0C7521R-------150~210HV----150~210HV1/2