Hot work tool steel
ALTA 1.2329 Tool Steel Specification
Steel properties
ALTA 1.2329 steel have high resistance to thermal shock and heat cracking, good mechanical characteristics in hot condition, optimal mechanical characteristics in cold condition and good toughness in hot condition. Obtained through a special 'super clean' manufacturing process -ESR, which allows a high level of micro-purity to be achieved.
Applications
Special alloyed steel designed for dies, molds, punches and other components subjected to high working temperature, such as :
² dies subjected to low pressure
² containers for die-casting presses
² extrusion press blocks and sleeves for extrusion presses etc.
Chemical composition
Chemical Composition per %
|
C |
Si |
Mn |
P |
S |
Cr |
Mo |
V |
Ni |
Cu |
Min. |
0.43 |
0.60 |
0.65 |
|
|
1.65 |
0.25 |
0.17 |
0.45 |
|
Max. |
0.48 |
0.75 |
0.85 |
0.025 |
0.010 |
1.85 |
0.35 |
0.22 |
0.60 |
0.25 |
Basic melting process : |
IM/EAF + LF + VD + (ESR) |
Hardness : |
Max 230 HB (annealed) |
Reduction ratio : |
5 : 1 minimum or required |
Grain size : |
≥ 5.0 per ASTM E112 |
Non-metallic inclusion : |
≤ 1.0 (thick), ≤ 1.5 (thin) per ASTM E45 method A (more pure by ESR route) |
Microstructure | SEP1614 or NADCA # 207 |
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 12 - 800 mm |
Size range (flats, plates) |
8 - 500 mm in thickness max. 1100 mm in width |
Downloads
-
2024-06-12 Alta 1.2329 SPEC (011 - S6 - T1 ).pdf
끂46 247.25 KB
Features
² High toughness and ductility
² High micro-cleanliness
² High polishability and machinability
² Intermediate red hardness
² Intermediate thermal fatigue resistance
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