Cold work tool steel
ALTA S5 Tool Steel Specification
Steel properties
ALTA S5 steel is a Shock-Resisting Tool Steel is a silicon-manganese tool steel which exhibits the highest impact toughness among all of the “S” type steels. The high toughness and the ability to be hardened to 62 Rockwell C make S5 an excellent choice for applications that require higher strength than S7 shock-resisting tool steel.
Applications
² Different cutting parts, chisels, rivet sets, punches, driver bits
² Pneumatic tools, hammers, stamps, brake dies, shear blade, drift pins, slitters, collets
Chemical composition
Chemical Composition per %
|
C |
Si |
Mn |
P |
S |
Cr |
Mo |
V |
Ni |
Cu |
Min. |
0.50 |
1.80 |
0.60 |
|
|
0.10 |
0.30 |
0.15 |
|
|
Max. |
0.60 |
2.20 |
0.90 |
0.025 |
0.010 |
0.50 |
0.50 |
0.35 |
0.25 |
0.30 |
Basic melting process : |
IM/EAF + LF + VD + (ESR) |
Hardness : |
Max 229 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 12 - 500 mm |
Size range (flats, plates) |
12 - 500 mm in thickness max. 1100 mm in width |
Downloads
-
2024-06-12 Alta S5 SPEC (011 - S6 - T1 ).pdf
끂36 603.78 KB
Features
² Good toughness
² High strength
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