| Type: | Special Steel Bar |
|---|---|
| Standard: | AISI, ASTM, DIN, JIS |
| Special Use: | High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Free Cutting Steel, Mold Steel |
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Ningshing Distributor Plastic Mold Steel 4Cr13/420/1.2083/SUS420J2
Ningshing Precision Machinery began in 1992. We devote oneself to providing One-Stop Solutions to our customers on Tool Steel, Die Steel, Alloy Steel, Mold Base, Machining Parts, CNC Machine.
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 | ≤ | ≤ | ≤ | ≤ | 12.50 | |||||||
| 0.42 | 1.00 | 1.00 | 0.030 | 0.030 | 14.50 | ||||||||
| 420 | ≤ | ≤ | ≤ | ≤ | ≤ | 12.00 | |||||||
| 0.15 | 1.00 | 1.00 | 0.030 | 0.030 | 14.00 | ||||||||
| 4Cr13 | 0.36 | ≤ | ≤ | ≤ | ≤ | 12.00 | |||||||
| 0.45 | 0.60 | 0.80 | 0.030 | 0.030 | 14.00 |
Dimensions
| Shape | Thick / Dia.(mm) | Width(mm) | ||||||
| Flat | 6-200 | 20-910 | ||||||
| Plate | 6-120 | 1000-2300 | ||||||
| Block | 150-600 | 200-1500 |
Delivery Condition
EAF+LF+VD+(ESR), Forged, Unmachined or Machined surface, UT 100% Passed
We offer two conditions as
Annealed: Hardness≤235HB
Q+T: Hardness 33-38HRC or as customized
Characteristics
Martensite stainless steel, with good machincability and excellent corrosion resistance, polishability, and high strength and wear resistance after heat treatment.
Application
It is also widely used for making plastic moulds and transparent plastic molds which require high load, wear resistance, and work under the action of corroding medium.
Forging Technique
Heat Treatment
| 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.
View more products, you can click product key words.
| Main Products | ||
| Steel Flat | Steel Plate | Die Steel |
| Plastic Mold Steel | Alloy Steel | Pre-machined Flat |
| Die Casting Die | Mold Base | Aluminum Die |
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