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您的位置:首页 > 产品展示 > 模具钢 > P20预硬化塑料模具钢3Cr2Mo\1.233\DIN 1.2311\ASSAB 618\P20H\P20Ni塑胶模具钢P20 plastic mold steel
P20预硬化塑料模具钢3Cr2Mo\1.233\DIN 1.2311\ASSAB 618\P20H\P20Ni塑胶模具钢P20 plastic mold steel P20预硬化塑料模具钢3Cr2Mo\1.233\DIN 1.2311\ASSAB 618\P20H\P20Ni塑胶模具钢P20 plastic mold steel P20预硬化塑料模具钢3Cr2Mo\1.233\DIN 1.2311\ASSAB 618\P20H\P20Ni塑胶模具钢P20 plastic mold steel

P20预硬化塑料模具钢3Cr2Mo\1.233\DIN 1.2311\ASSAB 618\P20H\P20Ni塑胶模具钢P20 plastic mold steel

P20预硬化塑料模具钢,属于美国牌号。
中国牌号:3Cr2Mo
德国:1.233
预硬塑料模具钢。在中国广泛应用,出厂硬度HRC30~42,适用于大中型精密模具,适用于长期生产高质塑料模具,用于大型模架。此钢具有良好的可切削性及可一般抛光。
P20塑料模具钢化学成分:
c
si
Mn
P
S
Cr
Mo
Ni
0.28-0.4
0.2-0.8
0.6-1
≤0.03
≤0.03
1.4-2
0.3-0.55
0.05-0.10
 
P20是一种模具焊材的型号
最早的是P20,紧接着P20H,P20Ni相继问世
以下是P20,P20H,P20Ni的一些硬度、规格、简介及比较
CMC-P20 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)。
CMC-P20H 硬度HRC 30-33 1.0 1.2 1.6 2.0 2.4 在CMC-P20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。
CMC-P20Ni 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。
 
● 硬度均匀,具有良好的抛光性能及光蚀刻花性能,加工性能佳。
● 真空脱气精炼处理钢质纯净,适合要求抛光或蚀纹加工塑胶模。 ● 预硬状态供货,无需再热处理可直接用于模具加工,缩短工期。
● 经锻轧制加工,组织致密,100%超声波检验,无气孔,针眼缺陷。
适用于电视机前壳、电话机、饮水机、吸尘器等塑料模及模架。
●热塑性塑胶注塑模具,挤压模具。 ● 热塑性塑料吹塑模具。
● 重载模具主要部件。
● 冷结构制件。
● 常用于制造电视机壳,洗衣机,冰箱内壳,水桶等
 
P20已预先硬化处理至285-330HB(30-36HRC),与瑞典618德国GS-2311状态相当,可直接用于制模加工,并具有尺寸稳定性好的特点,预硬钢材才可满足一般用途需求,模具寿命可达50W模次
P20钢的热加工工艺
项目
加热温度/℃
开锻温度/℃
终锻温度/℃
冷却
钢锭
1180~1200
1130~1150
≥850
坑冷
钢坯
1120~1160
1070~1110
≥850
砂冷或缓冷
 
 
Trade Info
Packing: in Bulk or Based on Clients' Requirements
Standard: Aisi
Production Capacity: 1000 Tons/Month
Model NO.: P20
Basic Info
Model NO.:P20
Export Markets:Global
Additional Info.
Packing:in Bulk or Based on Clients' Requirements
Standard:Aisi
Origin:Shanghai, China(Mainland)
Production Capacity:1000 Tons/Month
Product Desciption

Steel Standard and Grade
AISI P20; DIN 1.2311; ASSAB 618; GB 3CrMO2

P20 is a pre-hardened high tensile tool steel which offers ready machineability in the hardened and tempered condition, therefore does not require further heat treatment. This eliminates the risks, cost, and waiting time of heat treatment thus avoiding the associated possibility of distortion or even cracking. Subsequent component modifications can easily be carried out.

1. Features:
P20, American AISI standard pre-hardened plastic mold steel, good machining performance, excellent polishing performance, a certain toughness, can be carburized, surface hardness is up to 65HRC after carburizing quenching, with higher hot hardness and wear resistance.

2. Supply Condition: Pre-hardened, Hardness 30~35HRC.

3. Transformation temperature(Approx): AC1=770° C, AC3=825° C, Ar1=640° C, Ar3=760° C, Ms=300° C, Mf=120° C

4. Thermal processing specification: Heating temperature 1100~1150° C, Beginning forging temperature 1050~1100° C, Ending forging temperature ≥ 850° C, then air cooling.

5. Annealing specification: Heating temperature 1100~1150° C, holding time 2 ~ 4 h, the isothermal temperature 720° C, holding time 4 ~ 6h, furnace cooling to 500° C, released, then air cooling.

6. Quenching and Tempering specification:
Quenching temperature 860~870° C, oil quenching, Tempering temperature 540~580° C, hardness 30~35HRC.

7. P20 Plastic Mould Steel of Applications:
1) Thermoplastic injection mold and extrusion mold
2) Thermoplastic blowing mold
3) Main parts of heavy-duty mold
4) Structural fabrications
5) Usually used for manufacture of television casing, washing machine, refrigerator inner shell, and water-pot, etc.

      Chemical Composition               C               Si               Mn             Cr           Mo           P         S 
                                          %   0.28~0.40   0.20~0.80 0.60~1.00 1.40~2.00 0.30~0.55   ≤ 0.030    ≤ 0.030

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