Auto Parts Alloy Steel with DIN 1.2740 Hot Working Tool Steel Plate Metal Sheet Pipe Round Bar

• Type: Special Steel Bar
• Composition: Check Detailed Description
• Technique: Hot Rolled
• Shape: Bar
• Surface Treatment: Check Detailed Description
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Free Cutting Steel
• Model NO.: DIN 1.2740
• Application: Tool Steel Bar
• Transport Package: Nude Packing
• Specification: check detailed description
• Trademark: Ningbo Ningshing
• Origin: China

Product Description

Auto Parts Alloy Steel with DIN 1.2740 Hot Working Tool Steel Plate Metal Sheet Pipe Round Bar


Ningshing Special-Steel is the leading ditribution and stockist of DIN 1.2740 Hot Work Steel. Our large stock of DIN 1.2740 Hot Work Steel can meet your demand with immediate delivery. The stock involves different size range of hot rolled /forged rounds and flats, forged blocks. Delivery condiion in Annealed or Q+T.

DIN 1.2740 Hot Work Steel has high strength and is insensitive to temperature fluctuations.

Dimensions
Round: dia.10-500 mm
Hot Rolled Flat: 6-200 x 300-1200 mm
Forged Block: 150-500 x 200-1600 mm

Delivery Condition
EAF+(ESR) or EAF+LF+VD+(ESR), Hot rolled or Forged, Annealed, Black surface or Machined surface


Equivalence

AlSl / SAE	DlN /W.Nr	JlS	GB
	1.2740

Chemical Composition (%)

Steel Grade	C	Si	Mn	P	S	Cr
1.2740	0.24-0.32	0.30-0.50	0.20-0.40	≤ 0.030	≤ 0.030	0.60-0.90

Applications
Alloy tool steel is widely used to produce the cutting tool, cold/heat distortion mould and measuring implements, and further to manufacture the piston, valve, valve seat of fuel pump of diesel engine.


Heat Treatment
Annealing
670 to 700°C

Stress relieving
Approx. 650°C
Stress relieving to remove machines stresses should be carried out by heating to approx. 650°C, holding for one hour at heat, followed by air cooling. this operation is performed to reduce distortion during heat treatment.

Hardening
400 to 650°C / Oil, air
Hardness after quenching Max 240 Hbw.

Tempering
300 to 600°C



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.