Martensitic Stainless Steel
Alta 1.2083 Stainless 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 dies subjected to low pressure, containers for die-casting presses, extrusion press blocks and sleeves for extrusion presses.
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 |
0.015 |
1.85 |
0.35 |
0.22 |
0.60 |
0.30 |
Basic melting process : |
IM/EAF + LF + VD + (ESR) |
Heat treatment : |
Annealing, EFS, Q & T |
Surface condition : |
Bar ends saw cut, machined / turned, black / grinded, sand blast. Free from any surface defects |
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) |
Mechanical property |
N.a. |
Micro-structure |
SEP1614 or NADCA # 207 |
Ultrasonic Test |
SEP1921, EN 10228, ASTM A388 |
Macro-structure |
As per ASTM E381 |
Straightness / flatness |
≤ 1.5 mm / m (machined), ≤ 2.5 mm / m (black) |
Tolerance |
Per discussed |
Impact test |
Per discussed |
Size range (round bars) |
Ø 60 - 800 mm (2 2/5 inch – 31 1/2 inch) |
Size range (flats, plates) |
30 - 500 mm in thickness (1 1/5 inch – 19 3/5 inch) max. 1000 mm in width (39 2/5 inch) |
Rolled rounds are also available per request. Minimum diameter Ø 12 mm (1/2 inch)
Heat treatment
Annealing |
Temperature(°C) |
Cooling |
Hardness |
780 - 800 |
furnace |
max. 230 HB |
Forging |
Temperature(°C) |
Cooling |
|
900 - 1000 |
furnace |
|
Hardening |
Temperature(°C) |
Cooling |
Hardness |
880 - 920 |
oil or salt bath |
see tempering diagram |
Downloads
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2024-05-22 Alta 1.2329 SPEC (011 - S6 - T1 ).pdf
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