| ABBAB 718 is chrome and nickel alloy steel smelt in vacuum,.and
has been through hardening and tempering treatment before
ex-work.Lt has the following advantages: |
ABBAB 718为真空熔炼之铬镍合金钢，出厂前已经硬化和回火处理，有以下优点： |
| No danger of quenching crack |
无淬裂危险。 |
| No expense of heat treatment,and save the time for heat
treatment. |
无需热处理费用。节省热处理所需时间 |
| Reduce the expense of too(not needing correction of
deformation) |
降低工具所需成本（无需矫正变形） |
| Easy to finish work |
工作易于修整 |
| Can carry out nitrogen treatment and flame hardening treatment
to improve surface hardness and wearresisting performance |
可施以氮化及火焰硬化处理，以增进表面硬度及耐磨性。 |
718 special hardness type has been through heat rteatment up to
35-38HRC after ex-work.
For its high hardness,it has the following advantages: |
718特硬型出厂已热处理至35-38HRC，因硬度高而有下列优点： |
| Better finish performance |
抛光性更佳 |
| Better wear-resisting performance |
耐磨性更好 |
| Tensile strength and compression strength higher |
抗拉强度及抗压强度更高 |
