Active Member
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[China]
Address: 广州市黄埔区大沙地东路403号B802房(仅限办公）
Contact name:Echo
Guangzhou Changfeng Steel Co., LTD |
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NAK80 / P21 Plasitc Mold Steel Plate / Flat bar With High polishability
Similar grades: AISI-P21, JIS-NAK80, GB-B40
Technical service:
Surface treatment of die and mould vacuum heat treatment (nitrogen and oxygen, carbon and nitrogen, carburizing, nitriding).
Hardness: 38-42HRC
Available size(mm):
| Flat Bar Size(mm) | Round bar Size(mm) | |||
| Thickness | Width | Length | Diameter | Length |
| 10-1100 | 155-2200 | 2000-6000 | 20-200 | 2000-6000 |
Introduction:
Grade NAK80 / P21 is a pre-hardened plastic mold steel.Factory
hardness can reach HRC37-43.
Grade NAK80 / P21 has a good polishing performance and
carving, good electrical discharge.Use in the mirror polishing
mold, auto parts discharge Processing die.The thickness of not more
than 2MM thin sheet, efficient blanking die, punching die and
embossing mold, all kinds of scissors, mosaic blade, woodworking
blade, thread rolling and wear slider, cold heading die,
thermosetting resin Forming mold, deep drawing die, cold extrusion
die.
Chemical composition(%):
| Grade | C | Si | Mn | P | S | Ni | Mo | Cu | Al |
| NAK80 | 0.06-0.20 | ≤0.35 | 1.40-1.70 | ≤0.030 | ≤0.030 | 2.80-3.40 | 0.20-0.50 | 0.80-1.20 | 0.70-1.30 |
| P21 | 0.10-0.18 | ≤0.35 | 1.70-2.0 | ≤0.030 | ≤0.030 | 2.90-3.40 | 0.20-0.50 | 0.80-1.20 | 0.70-1.00 |
Features:
● No heat treatment, excellent optical polishing, machinability,
good erosion
● Vacuum degassing refining steel pure.
● Spheroidized annealing softening treatment, good cutting
performance.
● strengthen the elements of vanadium, molybdenum special addition,
wear resistance is extremely excellent.
Heat treatment:
| Quenching | Tempering | ||||
| Heating temperature | Cooling | Hardness/HRC | Heating temperature | Cooling | Hardness/HRC |
| 840-870 | OIL | 50-55 | 200-500 | AIR | 37-43 |
Applications:
General use in the mirror polishing mold, anti-dust, TV filter
board, cosmetic box, precision wrinkle processing mold, office
automation equipment, auto parts discharge processing mold.
Transparent products or products requiring smoothness, such as
home, cars, cameras, computers and other supplies on the
transparent product mold.
● Thickness of not more than 2MM thin sheet, efficient blanking
die, punching die and embossed mold.
● All kinds of scissors, mosaic blade, woodworking blade.
● Thread rolling and wear-resistant sliders.
● Cold heading die, thermosetting resin molding die.
● Deep drawing mold, cold extrusion die.
Advantages:
There is no need for heat treatment, the polishing is excellent,
cutting, and the erosion is good.
Vacuum degassing refining treatment of steel purity.
Terms of payment:
30% deposit T/T and the balance by L/C at sight, or T/T.
Delivery condition:
For abundant stock, 15-20 days.For customized products, 30-50 days.
Product photos:
