Free Cutting 42CrMo4/4140 Flat/Round Bar Plastic Mold Steel Plate Metal Sheet Pipe
Product Details
| Customization: | Available |
|---|---|
| Type: | Sheet |
| Standard: | AISI, ASTM, DIN, JIS, GB, BS |
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Basic Info.
- Model NO.
- 4140
- Composition
- Check Detailed Description
- Technique
- Forged
- Shape
- Block
- Surface Treatment
- Black, Machined
- Special Use
- High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
- Application
- Tool Steel Bar
- Quality Inspection
- Ut, Chemical Composition, Physical Properties/SGS
- Non-Metallic Inclusiton
- ASTM E45
- Grain Size
- ASTM E112
- Length
- 3-5.8m, or as Per Request
- Heat Treatment
- Annealed/Normalized/Q+T
- Transport Package
- Nude Packing
- Specification
- check detailed description
- Trademark
- Ningbo Ningshing
- Origin
- China
- Production Capacity
- 10000 Tons/Year
Product Description
Free Cutting 42CrMo4/ 42CrMo/ 4140/ Flat Bar/Steel Block/Round Bar Plastic Mold Steel
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
• 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
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.
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