1.2312/P20+S Alloy Steel Plate for Precision Plastic Mould

Product Description

1.2312/P20+S Alloy Steel Plate for Precision Plastic Mould
<1.2312/P20+S steel is ideally suited for the production of moulds where improved machinability is required. Typical applications include die, holders, zinc die casting dies, backers, bolsters and injection moulds. The versatility of this plastic mould tool steel with its high tensile characteristics enables uses for a variety of other applications such as shafts and wear strips.>

1.International Standard

Grade	DIN	AFNOR	AISI/SAE	GB
1.2312	X40CrMnMoS8-6	(40CMD8S)	P20+S	4Cr2MnMo

2. Chemical composition (%)

C	Mn	Si	Cr	Mo	S	P
0.35-0.45	1.40-1.60	0.30-0.50	1.80-2.10	0.15-0.25	0.05-0.10	≤0.030

3.Phase transition temperature

Ac1	740°C
Ms	310°C

The hardness of delivery

Prehardened and tempered

HB278-325(950-1100N/mm²)

 Heat treatment

Annealing	1)Heated to720-750°C, Two to four hours heat preservation, 2)Furnace cooling
Stress relief	1)Heated to560-650°C and then two to four hours heat preservation 2)Furnace cooling or air cooling
Prehardened	1)Preheat to 600-650°C 2)Heated to hardening temperature 840-840°C and heat preservation 3)Oil cooling 4)Hardness: HRC51
Drawing temper	1)Immediately after quenching 2)When the 580-650°C, with the 1/inch to heat preservation

PRODUCT SHOW 


4.Product Technique:



Introduction:
Low-carbon mold steels or group P steels are of different types that include P2, P3, P4, P5, P6, P20, and P21 steels. Chromium and nickel are the main alloying elements found in group P steels.
P20 tool steels are nitrided or carburized. These steels are capable of being machined into complex and large dies and molds. P20 steels are mostly used in the carburized condition. The presence of chromium and nickel enhances the toughness and hardness of P20 steels.

Fabrication and Heat Treatment:

Tempering:	P20 tool steels are tempered at 482-593°C (900 to 1100°F) for a Rockwell C hardness of 28 to 34.
Annealing:	Annealing takes place at 760-788°C (1400 to 1450°F) and then the steels are cooled slowly in the furnace at a temperature less than 4°C (40°F) per hour.
Cold Working:	P20 tool steels are capable of being readily cold worked by using conventional tooling methods with the alloy in the annealed condition.
Welding:	Conventional methods are used for welding of P20 tool steels.
Forging:	P20 tool steels are forged at 1093°C (2000°F) down to 899°C (1650°F). Forging below 871°C (1600°F) is not recommended for these steels.
Forming:	P20 tool steels can be readily formed by conventional methods in the annealed condition.
Machinability:	P20 tool steels have excellent machinability at about 80% that of water hardening steels.
Heat Treatment:	P20 tool steels are heated to 871-899°C (1600-1650°F) in the carburizing medium during the carburizing process. After being carburized, these steels are heated to 816-871°C (1500-1600°F) in order to be hardened and then held for 15 minutes and finally oil quenched.
Applications:	P20 tool steels are used for low-temperature applications that include injection molds and die casting dies.

5.Feature: 

1.Vacuum degassing refining processing steel purity, suitable for polishing or etch processing plastic mold.
2. In pre-harden state delivery, no need for heat treatment can be directly used for mold processing, shorten the construction.
3. After heat treatment machining and polishing performance is good, the nitriding treatment, can be suitable for chrome plating surface treatment, such as material is the qualitative hardness is uniform (400mm thick), good toughness and good machining performance.
4.Good hardness uniformity and polishing property, good machining properties. 
5.Good integral mechanical performance under high temperatures. 
6.Good heat-resistance and fatigue-resistance.
7. Pre-hardened to HRC30-36 can be directly used for mold processing, shorten the construction period. 



6. About us :

Hong Kong JIMI STEEL (XINGXIONG CO., Ltd) XINGXIONG Co., Ltd. Was established in 2012, located in the Shunde District of Guangdong Province, It is an import and export trading company mainly engaged in advanced special steel, die steel, alloy steel, and steel processing general machinery and equipment. The company adheres to the concept of "high quality, high requirements and good faith", 

Cooperating with more than 20 famous steel mills in China, rich in spot stock of products. 

Our company has a variety of processing equipment and all kinds of inspection and testing equipment, such as horizontal sawing machine, vertical sawing machine, milling machine, bilateral milling machine, precision milling machine, plane grinder and so on. The products with short producing time, excellent quality and high precision can provide a high-quality product choice for the vast number of customers at home and abroad. 

Our customer group spread all over the domestic provinces and cities, abroad including Europe, the United States, Australia, the Middle East, Southeast Asia and other more than 20 countries and regions, along with over 100 long-term stable cooperation customers...Choosing Xingxiong will bring you a better experience. 


PLASTIC MOULD STEEL: 1.2311, 1.2312, 1.2738, P20, 1.2083, 1.2316, NAK80, P40, 1.2738HH

HOT WORK MOULD STEEL: 1.2344, SKD61, H13, H11, FDAC, 8407

COLD WORL MOULD STEEL: SKD11, D3, SKS3, 1.2080, 1.2379, CR12MOV, O1, D2

STRUCTURAL ALLOY STEEL: 4140, 20CR, 40Cr, 35CrMo, 42CrMo, 38CrmoAi, SCM440, SCM420, 1.7225

CARBON STEEL &: Q235, Gcr15, S45C, S50C, S55C

CNC surface grinding machine, NC side boring machine, Band saw, CNC double head machine, Vertical Band saw, CNC milling machine, Double alloy saw blade, wireless remote control crane, Magnetic chuck






7.Our Service:

A. Steel plates: Cutting by bandsaw machine, milling, heat treatment, etc
B. Round bars: Cutting by bandsaw machine, peeling, grinding and turned, heat treatment, etc



8.Application:

Used for various large-sized or medium-sized precision plastic mold and alloy parts. 
Ideally suited for the production of plastic molds; 
Die holders, zinc die casting dies, backers, bolsters and injection molds; 
Shafts rail and wear strips; 



9. Stock:

High-quality stock for various steel flat bar and round bar.
Alloy steel / Cold work steel / Hot work steel / Plastic mold steel and Stainless 

For more tool and die steel please check the list:


10.Delivery Time

1) For abundant stock, 7-15 days.
2) For customized products, 15-30 days.

Loading Details:





11.FAQ:

Q1: What do you do for the control of the quality?

A1:  Before loading into the container, our products will all be inspected by ultrasonic inspection. Quality Grade conforms to SEP 1921-84 E/e, D/d, C/c as per customer's request.

 

Q2:: What are your hot-selling products?

A2: D2/1.2379, H13/1.2344, CR12MOV, DC53, CR8, abundant stock for both plates and rounds. Competitive prices and short lead-time.

Q3: Can we visit your company and factory? 
A3: Yes, warmly welcome! We can book the hotel for you before you come to China and arrange our driver to our airport to pick you up when you come. 

Q4: Are you a manufacturer or merely a trader? 
A4: We are a group of companies and owned manufacturer bases and trading companies. We specialized in plastic mold steel, hot work mold steel, cold work mold steel, alloy steel for mechanical, high-speed steel, etc. All materials are of high quality and competitive price. 
 

Hot sales Product:

1.2344                               SKD11                                       D3                                   DC50