For processing the high tensile metals:carbon stell common alloy stell,hard bronze forgeable castiron.etc.

加工高抗张强度金属:碳素钢、和可锻铸铁。

Properties determined by mechanical testing, such as yield strength, ductility, ultimate tensile strength, hardness, bendability, impact strength, etc.

由机械试验特性，如屈服强度、延展度、极限抗张强度、度、弯曲性、冲击强度。