P20 美标模具钢板定扎期货，保证材料性能选择舞阳钢厂销售部采购

1、P20是一种预硬化塑料模具钢的美标牌号。铬镍合金钢（又称为P20料）预硬塑料模具钢。2、材料特性：ASSAB公司共生产3种P20料，为718S、718H、618。最早的是P20，紧接着P20H，P20Ni相继问世。P20料硬度高，韧性好，抗拉性强，但是不耐腐蚀，耐磨性差。其中718H为718S料出厂前通过材料热处理获得，其中618料是这3种料级别最低的，相当于料，抛光性能差，生产寿命在10万次以下。718S和718H料抛光性能好，可用于透明热抛光模，其中718H的抛光性能高于718S。这两种料的生产寿命为30万次。2.1、以下是P20，P20H，P20Ni的一些硬度、规格、简介及比较2.2、 硬度HRC 30 0.9 1.0 1.2 1.6 2.0 2.4 主要是用来修补塑胶射出模、耐热模（铸铜模）。2.3、 硬度HRC 30-33 1.0 1.2 1.6 2.0 2.4 在的优点上加强硬度适用于塑胶射出模之氩焊丝。焊后机械加工性与蚀花性良好，材质均匀硬度高。2.4、 硬度HRC30 1.0 1.2 1.6 2.0 2.4 硬度与P20相同，但相比之下，抛光性好，焊后机械加工性与光蚀刻花性优异。2.5、热处理要求：整个P20，材料在钢材出厂前均经过预硬处理，都不再宜于淬火处理。P20料淬火容易爆裂，只能进行表面氮化处理，氧化的要求为表面0.1mm，硬度为65~68HRC。加工要求：P20料切削加工性能一般，当P20材料最小尺寸大于300mm时，如果在加工过程中存在大量线切割或电火花放电加工工序时，在线切割或电火花放电加工完成后，必须理做一次回火。3、美标牌号：P20  ；德标:1.2311

标准：       出厂状态：硬化及回火至硬度约330－370HB

1. P20 is a kind of mold steel. alloy steel (also known as P20 ) mold steel.

2. : ASSAB 3 kinds of P20 718S, 718H and 618.

The was P20, by P20H and P20Ni.P20 has high good strong but not poor wear .Among them, 718H is 718S heat and 618 is the grade of these three to with poor and life of less than times.718S and 718H has good which can be used for hot die. The of 718H is than that of 718S.These two have a life of times.

2.1 The are some and of P20, P20H and P20Ni

2.2 HRC 30 0.9 1.0 1.2 1.6 2.0 2.4 is used for mold and mold ( mold).

2.3 HRC 30-33 1.0 1.2 1.6 2.0 2.4 On the basis of the of to the is for argon wire of mold.After good and high .

2.4 HRC30 1.0 1.2 1.6 2.0 2.4 is the same as P20, but in the is good, and the and are .

2.5 Heat : the whole P20 is the steel the and is no for .P20 is easy to only for the 0.1mm, of 65~68HRC. : P20 has . When the size of P20 is than if there are a lot of or EDM in the a must be done after or EDM is .

3. sign No. : P20; : 1.2311

: AISI- P20 state: and to about