Basic Info.
| Model NO. | S136, 1.2083, 420, SUS420J2, 4Cr13 | Composition | Stainless Steel Scrap |
| Technique | Hot Rolled | Shape | Flat |
| 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 | Heat Treatment | Annealed / Q+T |
| Process | EAF+LF+VD+ESR | Inspection | Chemical and Phycial |
| Transport Package | Nude Packing | Specification | check detailed description |
| Trademark | Ningbo Ningshing | Origin | China |
| Production Capacity | 10000 Tons/Year |
Equivalence
| AlSl / SAE | DIN / W.Nr | JIS | GB | ||||||||
| 420 | 1.2083 | SUS420J2 | 4Cr13 |
Chemical Composition (%)
| Steel Grade | C | Si | Mn | P | S | Cr | |||||||
| 1.2083 | 0.36-0.42 | ≤1.00 | ≤1.00 | ≤0.030 | ≤0.030 | 12.50-14.50 | |||||||
| 420 | 0.15-0.40 | ≤1.00 | ≤1.00 | ≤0.030 | ≤0.030 | 12.00-14.00 | |||||||
| 4Cr13 | 0.36-0.45 | ≤0.60 | ≤0.80 | ≤0.030 | ≤0.030 | 12.00-14.00 | |||||||
| SUS420J2 | 0.26-0.40 | ≤1.00 | ≤1.00 | ≤0.040 | ≤0.030 | 12.00-14.00 |
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 |
Forging Technique
| Heat Temperature | Start Forging Temperature | Finish Forging Temperature | Cooling Method |
| Slowly heat to 800ºC,then quickly heat to final forging temperature | 1160-1200ºC | >=850ºC | Ash coolinor sand cooling,with timely annealing |
Annealing
840 to 870°C
Slow controlled cooling in furnace at a rate of 10 to 20°C/hr down to approx. 600°C, further cooling in air. Hardness after annealing: max. 229 HB.
Stress relieving
Approx. 650°C
Slow cooling in furnace; intended to relieve stresses set up by extensive machining, or in complex shapes. After through heating, hold in neutral atmosphere for 1 – 2 hours.
Hardening
1000 to 1050°C / Oil, air
Holding time after temperature equalization: 15 to 30 minutes.
Obtainable hardness: 53-56 HRC
Tempering
100 to 200°C (212 to 392°F)
Slow heating to tempering temperature immediately after hardening / time in furnace
1 hour for each 20 mm of work piece thickness but at least 2 hours / cooling in air.
For average hardness figures to be obtained please refer to the tempering chart.
Basic Info. Model NO. Injection Mould Craftwork Injection Mold One-time Molding One-time Molding Certification CE, ISO Customized Customized Shape According to your drawings Service OEM
Basic Info. Model NO. Injection Mould Base Mould Cavity Single Cavity Plastic Material Check Detailed Description Process Combination Type Single-Process Mode Application Car, Household Appliances,
Product Name Customized Mould Base for Plastic Mould & Die Casting Die Material 1.2311/P20; 1.2738/718; 1.2083/420/4Cr13/S136; 1.2344/H13; NAK80; 1.1730/C45/S50C/S355 etc. CNC Machining Center 24 sets
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