Cold work tool steel
ALTA 1.2358 Tool Steel Specification
Steel properties
ALTA 1.2358 is a Chrome-molybdenum-vanadium tool steel that have high toughness and good wear resistance. This 1.2358 steel's toughness is higher than other common cold work tool steel grades such as 1.2379, D3/1.2080, D2, A2/1.2363, D6/1.2436. An excellent combination of toughness and wear resistance enables a good usage for different pressing and injection applications during plastics processing.
The 1.2358 steel also has good hardenability and good dimensional stability. It can also be welded and polished well.
Applications
² Cold work area :
cutting and mechanical working (also materials of bigger thicknesses), deep drawing, punching, rolling, production of shear blades, more complicated tools for cold work
² Plastic molds area :
Molds for large series, molds for plastics with additives, tools for plastics stamping
Chemical composition
Chemical Composition per %
|
C |
Si |
Mn |
P |
S |
Cr |
Mo |
V |
Ni |
Cu |
Min. |
0.58 |
0.20 |
0.70 |
|
|
4.30 |
0.40 |
0.20 |
|
|
Max. |
0.62 |
0.50 |
0.90 |
0.020 |
0.010 |
4.70 |
0.60 |
0.30 |
0.25 |
0.25 |
Basic melting process : |
IM/EAF + LF + VD + (ESR) |
Hardness : |
Max 240 HB (annealed), pre-hardened 280 – 325 HB normally |
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 12 - 500 mm |
Size range (flats, plates) |
8 - 400 mm in thickness max. 1100 mm in width |
Downloads
-
2024-09-15 Alta 1.2358 SPEC (011 - S6 - T1 ).pdf
끂12 259.58 KB
Features
² High toughness
² Good wear resistance
² Good hardenability
² Good dimensional stability
² Good weldability and polishability
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