P21 Modified, HPM50, NAK80 of Mirror Plastic Mould Steel
1. Description:
NAK80 is a 40 HRC pre-Hardened, high performance, high precision, mold steel. Applications include plastic molds, rubber molds, jigs & fixtures, and press dies.
2. Unique Characteristics:
Super clean, Vacuum-Arc Remelt manufacturing process.
40 HRc hardness.
Age-hardened for uniformity of hardness throughout, even in heavy sections.
When welded, NAK leaves no witness lines after re-aging.
Uniform grain structure with no pin holes, inclusions or hard spots.
Machines up to 20% faster than 30 HRc P20 mold steels.
Never needs stress relieving, even after heavy machining.
Polishes to a superior No. 1 finish, even over welded areas.
3. Chemical analysis:
|
C%
|
Si%
|
Mn%
|
Ni%
|
AL%
|
Cu%
|
Mo%
|
|
0.15
|
0.30
|
1.50
|
3.00
|
1.00
|
1.00
|
0.10~0.40
|
4. Mechanical Properties:
Tensile Strength 183,400 psi
Yield Strength (.2% offset, 41 HRc) 147,600 psi
Reduction of Area 41.9%
Elongation in 2" (longitudinal) 16.1%
Modulus of Elasticity (room temp.) 30.0 x 10-6 psi
Charpy V-notch Impact Strength (toughness):
Longitudinal 8.1 ft/lb
Transverse 8.5 ft/lb.
Hardness 40 HRc
5. Technical delivery conditions:
EAF+LF+VD+ESR, As Rolled or forged, black surface or milling
6. Product ranges:
Flat/Plate: Thickness from 10mm to 400mm*Width 200-3000mm*Length 3000-12000mm.
Round bar: Diameter from 12mm to 420mm*Length3000-6000mm
Matrix: 200*200mm to 1200*1200mm
Materials with larger dimensions are available as forged bars on request.
7. Delivery:
According to customer request for Standard plate/flat/bar, black surface, peeled, turned, cutting, sawing, milling or other machining process.
8. Compared grades, based on usage:
NAK80, HPM50, Japanese JIS;
10Ni3MnCuAl, P80A, GK2003, Chinese GB/T;
HAM-70 Korean HJ;
P21+Modified AISI.