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Components as axle, valve, gear, medical applicance, spring etc., which require high hardness and wear resistance. Applied for making plastic moulds and transparent plastic molds which require high load, wear resistance and work under the action of corroding medium.
Product Details
Standard: GB/T 1220-1992
| DIN | AISI | JIS | GB |
| 1.2083 | 420 | - | 4Cr13 |
Chemical composition (%)
| Standard | Steel Grade | C | Si | Mn | P | S | Cr | Mo | V | W |
| DIN | 1.2083 | 0.38-0.45 | ≤1.00 | ≤1.00 | 0.030 | 0.030 | 12.00-13.50 | - | - | - |
| ASTM | 420 | - | - | - | - | - | - | - | - | - |
| GB | 4Cr13 | - | - | - | - | - | - | - | - | - |
Specification
| Round bar | Diameter | Length | - |
| Forged round bar: φ50~450 | 2000~6000 | - | |
| Rolled round bar: φ10~80 | 2000~6000 | - | |
| Flat bar | Thickness(mm) | Width(mm) | Length(mm) |
| Forged plate: 20~300 | 50~710 | 2000~6000 | |
| Rolled plate: 10~65 | 155~610 | 2000~6000 |
Characteristics
Martensite stainless steel with good machinability and excellent corrosion resistance, polishability and high strength and wear resistance after heat treatment.
Application
Components as axle, valve, gear, medical applicance, spring etc., which require high hardness and wear resistance. Applied for making plastic moulds and transparent plastic molds which require high load, wear resistance and work under the action of corroding medium.
Forging Technique
| Heating | Initial forging temperature ℃ | Final forging temperature ℃ | Cooling |
| Slowly heat to 800℃, then quickly heat to the final forging temperature | 1160-1200 | ≥850 | Ash cooling or sand cooling with timely annealing |
Heat treatment technique
| Item | Annealing | Quenching | Tempering |
| Temperature ℃ | 750-800 | 1050-1100 | 200-300 |
| Cooling | Furnace cooling | Oil cooling | Air cooling |
| Hardness | ≤229HB | 54-58HRC | ≥50HRC |
