Cold work tool steel
ALTA 1.3243 High Speed Steel Specification
Steel properties
ALTA 1.3243 steel is a type of W-Mo series high-speed steel containing cobalt. It has improved red hardness, high temperature hardness and wear resistance than 1.3343 steel, and a good cutting performance, but has lower strength and impact toughness, and it is easy to be oxidized and decarburized.
Applications
² Cutting tools for high-speed cutting machine tools
² Cutting tools that require high temperature resistance and certain vibration loads
Chemical composition
Chemical Composition per %
|
C |
Si |
Mn |
P |
S |
Cr |
Mo |
V |
W |
Co | Ni |
Cu |
Min. |
0.87 |
0.20 |
0.15 |
|
|
3.80 |
4.70 |
1.70 |
5.90 |
4.50 |
|
|
Max. |
0.95 |
0.45 |
0.40 |
0.030 |
0.030 |
4.50 |
5.20 |
2.10 |
6.70 |
5.00 | 0.25 |
0.30 |
Basic melting process : |
IM/EAF + LF + VD + ESR |
Hardness : |
Max 269 HB (annealed) |
Reduction ratio : |
5 : 1 minimum or required |
Grain size : |
≥ 6.0 per ASTM E112 |
Non-metallic inclusion : |
≤ 1.0 (thick), ≤ 1.5 (thin) per ASTM E45 method A (more pure by ESR route) |
Ultrasonic Test |
SEP1921, , EN 10308, ASTM A388 or agreed methods |
Macro-structure |
As per ASTM E381 |
Straightness / flatness |
≤ 1.5 mm / m (machined), ≤ 2.5 mm / m (black) |
Tolerance |
Per discussed |
Size range (round bars) |
Ø 80 - 400 mm |
Size range (flats, plates) |
50 - 300 mm in thickness max. 810 mm in width |
Downloads
-
2024-06-12 Alta 1.3243 SPEC (011 - S6 - T1 ).pdf
끂37 247.21 KB
Features
² Very high compressive strength
² Very high hot(red) hardness
² High hardness/wear resistance
² Good toughness and ductility
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