Cold work tool steel
ALTA 1.3343 High Speed Steel Specification
Steel properties
ALTA 1.3343/M2 steel is a general type of W-Mo high-speed steel with high hardness, hot hardness and high temperature strength. It has good thermoplasticity, excellent strength and toughness. The disadvantage is that the steel is sensitive to overheating and decarburization.
Applications
² Manufacturing of heavy-duty, complex-shaped, expensive tools
² Cold forging dies, forging tools
² Strip cutting machines, head forming dies
Chemical composition
Chemical Composition per %
|
C |
Si |
Mn |
P |
S |
Cr |
Mo |
V |
W |
Ni |
Cu |
Min. |
0.86 |
0.20 |
0.15 |
|
|
3.80 |
4.70 |
1.70 |
5.90 |
|
|
Max. |
0.94 |
0.45 |
0.40 |
0.030 |
0.030 |
4.50 |
5.20 |
2.10 |
6.70 |
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 |
Heat treatment
Annealing |
Temperature(°C) |
Hardness |
840 - 860 |
max. 269 HB |
Hot-forming |
Temperature(°C) |
900 - 1100 |
Hardening and tempering |
Quenching temperature(°C) |
Quenching medium |
Frequently-used tempering temperature(°C) |
1210 - 1230 |
Oil or air or hot bath 550°C |
540 - 560 |
Ac1 | Accm | Ar1 | Arcm | Ms |
835 | 885 | 736 | 781 | 131 |
Downloads
-
2024-06-12 Alta 1.3343 SPEC (011 - S6 - T1 ).pdf
끂37 248.17 KB
Features
² High hardness/wear resistance
² High toughness and ductility
² High hot(red) hardness
² High temperature strength
² Good thermoplasticity
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