Free Cutting 42CrMo4/4140 Flat/Round Bar Plastic Mold Steel Plate Metal Sheet Pipe

Product Description

Free Cutting 42CrMo4/ 42CrMo/ 4140/ Flat Bar/Steel Block/Round Bar Plastic Mold Steel

 

Product Description

Equivalence
 

AISI/SAE			DIN/W.Nr			JIS			GB
4140			42CrMo4			SCM440			42CrMo
			42CrMoS4
			1.7225

 

Chemical Composition (%)
 

Steel Grade		C		Si		Mn		P		S		Cr		Mo
42CrMo4 / 1.7225		0.38-0.45		≤0.40		0.60-0.90		≤0.035		≤0.035		0.90-1.20		0.15-0.30
42CrMoS4		0.38-0.45		≤0.40		0.60-0.90		≤0.035		0.020-0.040		0.90-1.20		0.15-0.30
4140		0.38-0.43		0.15-0.35		0.75-1.00		≤0.035		≤0.040		0.80-1.10		0.15-0.25
SCM440		0.38-0.43		0.15-0.35		0.60-0.85		≤0.030		≤0.040		0.90-1.20		0.15-0.30
42CrMo		0.38-0.45		0.17-0.37		0.50-0.80		≤0.035		≤0.035		0.90-1.20		0.15-0.25

 

Supply Specifications
 

Condition

Processing
Route

Tolerance
Range

Surface
Quality

Application
Notes

Black

/

Rolled: +3~5 mm
Forged: +10~20 mm

Hot-rolled black scale surface

Economical choice for
large volume orders

Rough
Machined

Milled 4 sides + Rough ground 2 sides

Rolled: +0~1 mm
Forged: +0~5 mm

Clean surface
no heavy scale

Pre-machined surface
ready for further processing

Fully
Machined

6 sides precision
milled + ground

+0.05~0.1 mm

Surface roughness Ra1.6

Ready for direct
CNC machining

Ground
Finish

6 sides fine ground

+0.02~0.05 mm

Mirror finish

For high-precision molds

Custom cutting service available according to drawings

Forging Technique
 

Heat Temperature			Start Forging Temperature			Finish Forging Temperature			Cooling Method
1150-1200ºC			1130-1180ºC			≥850ºC			Slow Cooling for Φ>50mm

 

Delivery Condition
EAF+LF+VD, Hot Rolled, Forged and Cold Drawn, Black surface or Machined (Peeled, Turned, Grinded),
Untreated or Annealed or Q+T, UT 100% Passed

 

Technical Parameters
 

 

Applications

 

 

Summary:Why Choose NSPM 4140

• Stable supply from leading domestic and overseas tool steel mills

• Complete tool steel grade portfolio

• Competitive pricing advantage

• Large stock and flexible cutting services

• Flexible delivery and supply solutions

• Professional technical support

 

Company Profile

 

FAQ

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.