Big Promotion P20 1.2311 Hot Rolled Steel Round Bar
Introduction
3Cr2Mo is an internationally widely used plastic mold steel, its good mechanical properties, high hardenability can make Larger cross-section steel to obtain more uniform hardness, and this steel has good polishing performance and high mold surface finish.
When using this steel mold, usually make quenching and tempering treatment first that the hardness is HRC28 ~ 35 (pre-hardened), and then by cold working manufactured molds can be used directly.
In this way, it can guarantee the using performance of the mould, and avoid deformation of the mold causes by heat treatment.
Therefore, the steel is suitable to manufacture big or medium-sized precision plastic mold and low melting point, tin, zinc, lead alloy die-casting molds.
Standard: GB/T 1299-1985
Similar grade: P20, 1.2311, PDS-3
Chemical elements(GB/T1299-20000)%
| 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 |
0.85-1.15 |
Feature
1.Pure steel vacuum degassing refining process for polishing or etch processing plastic mold
2.Pre-hardened state of supply, without heat treatment can be used directly in the mold, shorten the construction period.
3.By forging rolling processing, compact structure, 100% ultrasonic testing, non-porous, needle defects.
4.For the production of plastic mold and die casting low melting point metal mold material.
5.This steel has good machinability and mirror polishing properties.
6.Hardness:285-330HB (30-36HRC)
7.Good dimensional stability
8.With long service life, Mold die life up to 50W times
Application
1.Main part of overloading mold
2.Thermoplastic injection molding, extrusion dies
3.Commonly used in the manufacture of TV cabinet, washing machine, refrigerator shells, buckets, etc.
Recommend heat treatment:
| Quenching |
Tempering |
| Heating temperature/ºC |
Cooling way |
Hardness (HRC) |
Tempering temperature
/ºC
|
Tempering number |
Hardness (HRC) |
| First preheating |
Second preheating |
Last heating |
| 1180-1200 |
1130-1150 |
≥850 |
Oil Cooling |
50-52 |
200 |
2 |
≥48 |
Available Size(mm):
| Grade |
Size(mm) |
| 1.2311 Plate |
Thickness |
Width |
Length |
| 10-460 |
2200 |
5800 |
| 1.2311 Round Bar |
Diameter |
Length |
| 10-350 |
3000-6000 |
Delivery: For abundant stock, 7-15 days.For customized products, 30-50 days.
Packaging: We provide the package according to the export standard or as client's requirements
Our service:
1.Sizes, materials and others are all at your requirements and can be changed;
2.Price varies on materials, dimensions, finish craft and different payments;
3.We are direct manufacture in machinery manufacturing work with experience of several decades;
4.Detail production design will be made according to information you offered;
5.We have adequate inventory, so that we can quick delivery;
6.The most important is that we have advanced equipment.
Quality Inspection
Loading Photo
About us:
Guangzhou ChangFeng Steel Co., Ltd. is a professional special steel company, which specialized in exporting mould steel products based in China. With more than 20 years experience in special steel industry, our main products are Plastic Mould Steel, Hot Work Mould Steel, Cold Work Mould Steel, Alloy Structural Steel, Tool Steel, Stainless Steel, Carbon Steel and Forged Block.
To ensure provide high quality products to customers, we have close cooperation with many Chinese first class special steel enterprises, including Baosteel Group, Dongbei Special Steel, Changcheng Special Steel, Hongsheng Heavy Industry, Xingcheng Special Steel, Daye Special Steel.
We have thousand tons of stock materials in our own factory and also can provide processing services to customers. We are full of export experience for many years, the product covers America, Germany, France, Italy, Turkey, Singapore, Thailand, Malaysia, Vietnam, Taiwan, and Middle-East.
After years of development, the company has established a complete quality management and export service system. We have a group of experienced and competent elites and is capable of offering the best service to clients.
Our company equips with large-sized Vertical saw machines, Horizontal saw machines, Milling machines, Grinding machines and other advanced equipments to provide customers with cutting and other processing services.
All the products should be inspected the metallographic analysis, hardness, ultrasonic flaw detection and other strict inspection processes, which meet the standards of DIN, AISI, JIS and GB to ensure their function and quality.
Certificate
Audited Supplier 
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