英语翻译The specific material selected for a particular dies or

英语翻译
The specific material selected for a particular dies or mold is normally determined by the mechanical properties necessary for the proper operation of the dies and molds.The final choice of materials for die and mould depends on the customers.The performance and economic factors of the materials are considered.
Two principal materials for dies and molds are cold work tool steel,such as carbide steel ,alloy tool steel ,carbon tool steel,high alloy steel,high carbon steel,low carbon steel ,shock resistance tool and so on.
The characteristics of a material include physical and mechanical properties.They are weight ,thermal and electrical conductivity,rate of thermal expansion ,and melting point .The mechanical properties of a material are those properties which can be permanently altered by thermal or mechanical treatment .They are strength hardness ,wear resistance,brittleness,plasticity ,ductility malleability,and modulus of elasticity.
Die steels are hardened and tempered and wear resistance,high hardness,sufficient anti-impact strength.Mold streets are hardened and tempered and heat resistance,corrosion resistance and wear resistance.
Die and mold steels are used as deep-drawing dies,stamping dies,extrusion dies,piercing dies ,bending dies ,pressure die-casting dies ,forming dies and thermoplastic and thermosetting molds.
翻译希望通顺呀！PS：我只有这么多分了，

制造模具或型模的材料一般是由机械特性所决定的,这些机械特性是为了正确操作模具或型模而必不可少的.最终选定哪种材料取决于客户,需要兼顾性能和成本因素.
制造模具或型模的主要材料是冷作工具钢,例如碳钢,合金工具钢,碳工具钢,高合金钢,高碳钢,低碳钢,抗震钢等.
材料的特性分为物理特性和机械特性,包括：重量,导热性和导电性,热膨胀速度,熔点.材料的物理特性是指通过热力或机械处理后,可让材料发生永久性变化,包括：强度和硬度,耐磨性,脆性,可塑性,延展性,可锻性,以及弹性模量.
模具钢坚硬,经过回火处理,耐磨,硬度强,抗冲击力较强.型模刚坚硬,经过回火处理,有耐热,耐腐蚀,耐磨损的特点.
模具或型模钢广泛应用于拉伸成型模,冲压模,挤压模,冲孔模,弯曲模,压力压铸模,成型模,热塑型膜,热固型膜.