NAK55 Mirror Plastic Mould Steel
1.Description:
NAK55 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:
Vacuum-Arc Remelt manufacturing process.
40 HRc hardness.
Uniform 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 50% faster than 30 HRc P20 mold steels.
Never needs stress relieving, even after heavy machining.
3.Chemical analysis:
|
C%
|
Si%
|
Mn%
|
Ni%
|
AL%
|
Cu%
|
S%
|
|
0.15
|
0.30
|
1.50
|
3.00
|
1.00
|
1.00
|
0.10
|
4.Mechanical Properties:
Tensile Strength 182,000 psi
Yield Strength (.2% offset) 146,500 psi
Reduction of Area 39.8%
Elongation in 2"(longitudinal) 15.6%
Modulus of Elasticity (room temp.) 30.00 x 106psi
Charpy V-notch Impact Strength:
Longitudinal 7.2 ft./lb.
Transverse 5.6 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
7.Delivery:
According to customer request for Standard plate/flat/bar, black surface, cutting, sawing, milling or other machining process.