Forging P20/ B30PH (Baosteel) Prehardening Corrosion Resistance
Plastic Mold Steel
Forging P20 / B30PH (Baosteel) plastic mold steel is a common alloy tool steel which usually supplied in QT
condition. It can give an excellent polished finish.It is one of the most widely used for high demand large-sized or
medium-sized precision plastic mould and alloy parts. This grade
also provides excellent wear resistance.
Features
a, Good hardness uniformity and polishing property,good machining
properties.
b, Good integral machanical performance when under high
temperature, high Corrosion resistance
c, Good heat-resistance and fatigue-resistance,very high mechanical
behavior,cutting mechanical property.
d, Pre-hardened to HRC28-32, can be directly used on mould
processing, shorten the construction period.
e, High putity and homogeneous structure of China's biggest ESR
production base for its strict requirement in the whole process of
exploitation, smelting, vacuum degassing, ESR, forging, annealing,
inspection.
Chemical Composition (Wt%)
| Grade | C | Si | Mn | S | P | Cr | Mo |
| P20 | 0.28-0.40 | 0.20-0.80 | 0.60-1.00 | ≤0.030 | ≤0.030 | 1.4-2.00 | 0.30-0.55 |
Available Size(mm)
| Plate | Thickness (mm) | Width (mm) | Length (mm) |
| 220-460 | 2000-2200 | 4000-8000 |
| Block | Thickness (mm) | Width (mm) | Length (mm) |
| 250-800 | 800-1600 | 2000-6000 |
Recommend Heat Treatment
| Quenching | Tempering |
| Heating temperature/℃ | Cooling way | Hardness (HRC) | Heating temperature/℃ | Cooling way | Hardness
(HRC) |
| 850-880 | Oil Cooling | 50-52 | 580-640 | Air Cooling | 28-32 |
Applications
a. Plastic molds for injection compressing and injection molding
b. TV cabinets,drum mold of washing machine,etc.
c. Often used in the manufacture of television cabinet, washing
machine, refrigerator inner shell, etc
d. Main components of overloading mold
Physical Properties of P20
Density: 0.284 lb/in3 (7861 kg/m3)
Specific Gravity: 7.86
Modulus of Elasticity: 30 x 106 psi (207 GPa)
Thermal Conductivity:
24 Btu/ft/hr/°F
41.5 W/m/°K
Machinability: 60-65% of a 1% carbon steel
Our service
Our company have introduced large-sized vertical saw machines,
horizontal saw machines, milling machines, grinding machines and
other advance equipments, we can export our products by wholesales
and retail sales, whole plate or strip is available. All our
products can meet the standards of DIN, AISI, JIS and GB, all the
material should be inspected the ultrasonic, hardness and others
strict inspection
process before the shipment.
a, Sizes, materials and others are all at your requirements and can
be changed;
b, Price varies on materials, dimensions, finish craft and
different payments;
c, We are direct manufacture in machinery manufacturing work with
experience of several decades;
d, Detail production design will be made according to information
you offered;
e, We have adequate inventory, so that we can quick delivery;
f, The most important is that we have advanced equipment.
