Alloy Steel with JIS G4404 ASTM A681 60WCrV7 DIN 1.2550 Tool Steel Plate Metal Sheet Pipe Knives Making Plastic Mold Steel Flat Block Round Bar

• Type: Sheet
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Check Detailed Description
• Technique: Forged
• Shape: Plate
• Surface Treatment: Black, Machined
• Model NO.: 1.2550
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Tool Steel Bar
• Transport Package: Nude Packing
• Specification: check detailed description
• Trademark: Ningbo Ningshing
• Origin: China

Product Description

DIN 1.2550/ Plastic Mold Steel/JIS G4404/60WCrV7

Ningshing Special-Steel is one of the largest specialized stockiest and service center for tool steel and alloy steel in China. We have more than 20 years of experiences in supplying Plastic Mold Steel.
 

Dimensions
Round: dia.10-500 mm
Hot Rolled Plate: 10-460 x 1600-2300 mm
Forged Block: 150-500 x 200-1900 mm
 

Delivery Condition
EAF+LF+VD, Forged, Q+T, Black surface or Machined surface, UT SEP1921 Class3 D/d

 

Equivalence

AISI / SAE	DIN / W.Nr	JIS	GB
----	1.2550	G4404	60WCrV7

Chemical Composition(%)

Steel Grade	C	Si	Mn	P	S	Cr	W
1.2550	0.55-0.65	0.70-1.00	0.15- 0.45	≤ 0.030	≤ 0.030	0.90- 1.20	1.70- 2.20

Measuring and cutting tool steel, low alloy tool steel is commonly used, with high hardenability, and high tempering stability. 9SiCr alloy tool steel can be used in the manufacture of complex shape, small deformation, high wear resistance, low speed cutting tools such as drills, thread tools, reamer, die, tap, screw plate and rollers etc..
High carbon alloy tool steel has good toughness, good temper stability, small deformation during heat treatment. The carbide in the steel has the advantages of uniform distribution, not easy to precipitate carbide net, and is easy to be normalized and eliminated. However, the compressive strength and wear resistance are insufficient, and the workability is poor. When the residual carbon content of the steel is 0.6%-0.7%, the thermal sensitivity of the surface layer increases due to the decrease of carbide. After normal quenching, the surface hardness can still reach 60-62HRC, but the flexural strength is decreased by 40%-50%. The grain size of the surface layer is 7, and the core is of grade 10.


The steel has good forging performance, because it is easy to be removed, it needs to be heated in a neutral atmosphere or a protective atmosphere furnace. By applying the heat treatment, the microstructure can be obtained, and the process can be simplified, saving time and energy. It has good machinability and ideal heat treatment.

Q1: What is Ningbo Ningshing Precision Machinery Group Co., Ltd ?
A1: Ningbo Ningshing Precision Machinery Group Co., Ltd., formerly known as Ningbo Ningshing Special-Steel Group Co., Ltd., is the leading distributor of Special Steel, and also a professional mold base maker in China. Our business involves special steel trading, machining processing, mold base making, heat treatment, CNC machines manufacturing.


Q2: Are you a manufacturer or a trader? 
A2: For Special Steel, we are the one of the leading distributors and service center in China. 9 warehouses with over 50,000 tons of regular stock. Our workshop has various kinds of equipments for sawing, milling, grinding, drilling etc.
For mold base, we are a professional manufacturer, with 24 sets of CNC machines, 3 axis and 5 axis, CMM for inspection. We produce medium-large sized mold base for plastic injection mold and die casting die.


Q3: How do you control the quality of steels?
A3: Firstly, we have very close and deep relationship with Chinese Prime Mills, choose supplier carefully, and regard them as the long term business partner. Based on the long term cooperation, we concentrate on special steel business and expand the market step by step. Secondly, we have own technical center which is formed by the experienced engineers and technicians whom ever worked for prime mills. We control the quality in production process, in-out warehouse.


Q4:: Which kind of processing can you do?
A4: We do machining processing like cutting, milling, grinding, turning, peeling, drilling, CNC machining. Meanwhile, we do vacuum heat treatment for die and mold.